Section Overview. Table of Contents

Transcription

1 Section Overview For over 80 years Littelfuse has been providing fuses to the electrical market. You can continue to count on our manufacturing and supply chain processes to deliver high quality fuses when you need them. t Littelfuse we leverage our global reach to stay on top of the latest applications and standards. Whether your circuit protection needs are focused on OEM, MRO, or construction, we are committed to being your circuit protection partner and appreciate your business. FUSES Table of ontents lass L... - lass RK lass RK SPFR Solar Inverter Fuse lass K/H lass J lass T lass G lass /D Littelfuse POWR-GRD Products atalog

2 Fuses UL lass L KLP Series powr-pro FUSES 600 V Time-Delay mperes lass L Fuses Series amperage atalog System KLP 800 KLP800 KLP800.X KLP series POWR-PRO fuses meet or exceed the most stringent project specifications, such as silver links, silver-plated copper end bells, glass-reinforced melamine bodies, O-ring seals between body and end bells, and granular quartz fillers. pplications Switchboard mains and feeders Motor control center mains Large motor branch circuits Protection of power circuit breakers T urves, downloadable D drawings and other technical information: /klpc Please refer to lass L dimensions... pg. Peak Let-Thru urve KLP Features/Benefits POWR-PRO Performance (see pg. 3) Best in class time-delay withstand urrent-limiting Easily coordinated with other system components 300 k Interrupting Rating (self certified) Voltage Ratings: : 600 V D: 480 V Interrupting Ratings: : 200 k rms symmetrical 300 k rms symmetrical (Littelfuse self-certified) D: 20,000 mpere Range: pprovals: : Standard 248-0, lass L UL Listed (File No. E889) UL Recognized (File No. E76) S ertified (File No. LR29862) Federal (QPL-W-F-84) D: Littelfuse self-certified Note: For more information, see Peak Let-Thru Table on pg Littelfuse POWR-GRD Products atalog

3 Fuses UL lass L KLLU series FUSES 600 V Time-Delay mperes lass L Fuses Series amperage atalog System KLLU 60 KLLU60 KLLU60.X T urves, downloadable D drawings and other technical information: /kllu KLLU series fuses meet or exceed UL requirements for UL lass L fuses. The KLLU series offers an economical alternative to KLP POWR-PRO fuse with a slightly higher peak let through current. pplications Service switches Switchboard mains and feeders Motor control center mains Large motor branch circuits ircuit breaker protection Please refer to the lass L dimensions... pg. Peak Let-Thru urve KLLU Features/Benefits urrent-limiting Easily coordinated with other system components 200 k Interrupting Rating Voltage Ratings: : 600 V D: 300 V Interrupting Ratings: : 200 k D: 20 k mpere Range: pprovals: Standard 248-0, lass L UL Listed (File No. E889) S ertified (File No. LR29862) D: Littelfuse self-certified Note: For more information, see Peak Let-Thru Table on pg Littelfuse POWR-GRD Products atalog

4 Fuses UL lass L LD Series powr-pro FUSES 600 V /D Time-Delay mperes lass L Fuses Series amperage atalog System LD 700 LD700 0LD700.X T urves, downloadable D drawings and other technical information: /ldc High D voltage and interrupting ratings make the POWR-PRO LD ideal for D applications. The D interrupting performance exceeds UL listing requirements. Please refer to the lass L dimensions... pg. Peak Let-Thru urve LD pplications Solar inverter and array protection UPS protection especially for large battery circuits D distribution and variable speed drives Mass transit systems Features/Benefits POWR-PRO Performance (see pg. 3) Extremely urrent-limiting 600 V /D rated 200 k Interrupting Rating 0 k D Interrupting Rating Voltage Ratings: : 600 V D: 600 V Interrupting Ratings: : 200 k rms symmetrical D: 0 k (6 millisecond time-constant) mpere Range: pprovals: Standard 248-0, lass L UL Listed (File No. E889) UL Recognized (File No. E76) S ertified (File No. LR29862) Note: For more information, see Peak Let-Thru Table on pg Littelfuse POWR-GRD Products atalog 3

5 Fuses UL lass L lass l URRENT-LIMITING EFFETS urrent-limiting Effects of KLP (600 V) Fuses lass L Fuses Short ircuit pparent RMS Symmetrical urrent for Various Fuse Ratings urrent* ,000,000,000,000,000,000,000,000,000 0,000 8,800 0,000 0,000 0,000 0,000 0,000 0,000 0,000,000 0,00 3,00,000,000,000,000,000,000 20,000 2,000,000 9,000 20,000 20,000 20,000 20,000 20,000 2,000 3,000 6,000 2,000 24,000 2,000 2,000 2,000 2,000 30,000 4,000 8,000 23,000 26,000 30,000 30,000 30,000 30,000 3,000,000 9,000 24,000 27,000 32,000 3,000 3,000 3,000 40,000 6,000 20,000 2,000 28,000 34,000 40,000 40,000 40,000 0,000 7,000 22,000 27,000 3,000 37,000 42,00 0,000 0,000 60,000 8,000 24,000 29,000 34,000 40,000 46,000 2,000 60,000 80,000 20,000 26,000 32,000 37,000 44,000,000 7,000 70,000 00,000 2,000 27,000 34,000 40,000 46,000 7,000 6,000 7,000 0,000 23,000 3,000 38,000 44,000 4,000 67,000 7,000 87, ,000 24,000 34,000 42,000 46,000 7,000 70,000 80,000 9,000 urrent-limiting Effects of KLLU (600 V) Fuses Short-ircuit pparent RMS Symmetrical urrent for Various Fuse Ratings urrent* ,000,000,000,000,000,000,000 0,000 0,000 0,000 0,000 0,000 0,000 0,000,000,900,000,000,000,000,000 20,000 3,000 8,00 20,000 20,000 20,000 20,000 2,000 4,000 20,000 2,000 2,000 2,000 2,000 30,000 4,00 2,000 26,00 30,000 30,000 30,000 3,000,000 22,000 28,00 34,000 3,000 3,000 40,000 6,000 23,000 30,000 3,000 37,000 40,000 0,000 7,000 24,000 32,000 38,000 39,000 44,000 60,000 8,000 26,000 34,000 42,000 43,000 0,000 80,000 9,000 28,000 36,000 44,000 46,000 4,00 00,000 2,000 30,000 38,000 46,000 48,000 7,00 0,000 24,000 3,000 44,000 0,000,000 68, ,000 26,000 38,000 48,000 3,000 60,000 74,000 urrent-limiting Effects of LD (600 V) Fuses Short ircuit pparent RMS Sym met ri al URRENT for Various Fuse Ratings urrent* ,000,000,000,000,000 0,000 8,00 0,000 0,000 0,000,000 9,70 4,000,000,000 20,000 0,00,000 9,000 20,000 2,000,00 6,000 2,000 2,000 30,000 2,000 7,000 22,000 26,000 3,000 2,00 8,000 23,000 28,000 40,000 3,00 9,000 24,000 30,000 0,000 4,000 2,000 26,000 32,000 60,000,000 22,000 28,000 34,000 80,000 6,000 24,000 30,000 36,000 00,000 8,000 2,000 33,000 40,000 0,000 20,000 30,000 38,000 44, ,000 23,000 32,000 4,000 46,000 *Prospective RMS Sym met ri cal mperes Short-ircuit urrent Note: Data derived from Peak Let-Thru urves Littelfuse POWR-GRD Products atalog

6 Fuses UL lass L lass l series dimensions in inches (mm) mperes Fig. No in Inches (mm) B D E F G H J K L M N (9.3) (9.3) (9.3) 3 4 (46.) 3 4 (46.) 3 4 (46.) (7.) (7.) (7.) 9 4 (23.0) 9 4 (23.0) 9 2 (24.3) 9 2 (24.3) 8 8 (29.) (273.) (273.) 2 (0.8) 2 (0.8) (60.3) 2 2 (63.) 2 2 (63.) 3 (76.2) 3 8 (9.) 3 8 (9.) 7 6 (.) 8 x 8 (.9) x (28.6) 8 x 3 4 (.9) X (9.) 8 X 3 4 (.9) X (9.) 8 x 8 (.9) X (28.6) 8 X 8 (.9) X (28.6) lass L Fuses (9.3) 3 4 (46.) (7.) 9 4 (23.0) 9 2 (24.3) (273.) (69.9) 3 2 (88.9) 2 (2.7) 8 x 3 4 (.9) x (9.) 8 x 8 (.9) x (28.6) (0.6) 3 4 (46.) (7.) 9 4 (23.0) 9 2 (24.3) (273.) 8 (4.3) 3 4 (44.) 3 2 (88.9) (27.0) 3 4 (9.) 8 X 3 4 (.9) x (9.) 8 X 8 (.9) x (28.6) (0.6) 3 4 (46.) (7.) 9 4 (23.0) 9 2 (24.3) (273.) 8 (4.3) 3 4 (44.) 4 (0.6) (27.0) 3 4 (9.) 8 X 3 4 (.9) x (9.) 8 X 8 (.9) x (28.6) (0.6) 3 4 (46.) (7.) 9 4 (23.0) 9 2 (24.3) (273.) 3 4 (44.) 3 4 (82.6) (20.7) 3 4 (46.) 3 4 (9.) 8 x 3 8 (.9) x (34.9) 8 x 3 8 (.9) x (34.9) (0.6) 3 4 (46.) 9 4 (23.0) (273.) 8 (4.3) 3 4 (82.6) 4 (33.4) 7 8 (8.0) (2.4) 8 DI. (.9) (0.6) 3 4 (46.) 9 4 (23.0) (273.) 8 (4.3) 3 4 (82.6) 4 (33.4) 7 8 (8.0) (2.4) 8 DI. (.9) J J J H B F B D E F B D E F M N M N M G FIG. FIG.2 FIG. 3 J H J H B D E F D B F L N M G G M K FIG. 4 FIG. 200 Littelfuse POWR-GRD Products atalog

7 Fuses UL lass RK LLNRK/LLSRK/LLSRK_ID Series INDITOR POWR-PRo FUSES 20/600 V Dual Element Time-Delay / mperes lass RK Fuses QPL /0 2 8 /0 6 / /00 / /0 /4 3 2 / /4 4 /0 3 / /0 6 / /0 8 /0 4 / / /0 2 /4 6 /0 7 / /0 2 / * 22 RK fuses are extremely current-limiting fuses meaning they greatly reduce or eliminate damage to circuits and equipment under short-circuit conditions. Replacing existing lass H, K and RK fuses with RK fuses is one of the easiest ways to immediately improve the protection of plant workers and equipment. pplications ll general purpose circuits Motors Transformers Safety upgrades Features/Benefits POWR-PRO Performance (see pg. 3) Indication Dual-element design Extremely urrent-limiting IE Type 2 No Damage protection to IE and NEM type motor starters Indicating and din mount fuseholders available Voltage Ratings: 600 V/300 VD (LLSRK/LLSRK_ID) 20 V/2 VD (LLNRK) Interrupting Ratings: : 200 k rms symmetrical 300 k rms symmetrical (Littelfuse self-certified) D: 20 k mpere Range: /0 600 pprovals: : Standard 248-2, lass RK UL Listed (File No. E889) S ertified (File No. LR29862) D: Littelfuse self-certified Federal Specification WF-84 (QPL- W-F-84) LFR60 Series... pg. 90 LFR2 Series... pg. 90 Note: ll LLSRK_ID fuses rated amp and above are Indicator fuses. *7 is only ava lable for the 600 V. 600 V type series amperage atalog System Indicating llsrk_id 60 LLSRK060ID LSRK060.TXID Non-indicating LLSRK 60 LLSRK060 LSRK060.T 20 V type series amperage atalog System Non-indicating LLNRK 80 LLNRK080 LNRK080.V T urves, downloadable D drawings and other technical information: /llsrk /llnrk Please refer to the lass R dimensions... pg. 22 Peak Let-Thru urve (600 V) LLSRK PEK LET-THRU IN MPERES VILBLE FULT URRENT SYMMETRIL R.M.S. MPERES Note: For more information, see Peak Let-Thru Table on pg Littelfuse POWR-GRD Products atalog

8 Fuses UL lass RK KLNR/KLSR Series FUSES 20/600 V Fast-cting -600 mperes lass RK Fuses 600 V series amperage atalog System KLSR 90 KLSR090 KLSR090.V 20 V series amperage atalog System KLNR 90 KLNR090 KLNR090.V KLSR/KLNR fuses are an economical single element design providing the safety of an RK fuse. pplications Resistance heaters Lighting circuits Non-inductive loads T urves, downloadable D drawings and other technical information: /klsr /klnr Peak Let-Thru urve KLSR Features/Benefits Extremely urrent-limiting Indicating and din mount fuseholders available Voltage Ratings: : 20 V (KLNR); 600 V (KLSR) D: 2 V ( 600 KLNR); 20 V ( 30 KLSR); 300 V (3 600 KLSR). Interrupting Ratings: : 200 k rms symmetrical D: 20 k mpere Range: 600 pprovals: : Standard 248-2, lass RK UL Listed (File No. E889) S ertified (File No. LR29862) D: Littelfuse self-certified LFR60 Series... pg. 90 LFR2 Series... pg. 90 Please refer to the lass R dimensions... pg. 22 Note: For more information, see Peak Let-Thru Table on pg Littelfuse POWR-GRD Products atalog 7

9 Fuses UL lass RK class rk URRENT LIMITING EFFETS lass RK Fuses urrent-limiting Effects of LLSRK and LLSRK_ID (600 V) Fuses Short ircuit pparent RMS Symmetrical urrent for Various Fuse Ratings urrent* ,000,060,600 2,00 2,600 4, ,000,30 2,000 2,800 3,400,20 8,000,000,600 2,300 3,200 3,900 6,000 9,000 20,000,700 2,600 3,600 4,00 6,700 0,000 2,000,900 2,800 3,800 4,800 7,00,000 30,000 2,000 3,000 4,00,200 8,000 2,000 3,000 2,00 3,00 4,400,700 8,00 2,00 40,000 2,200 3,300 4,600 6,000 9,000 3,000 0,000 2,400 3,00 4,900 6,00 9,00 4,000 60,000 2,00 3,800,200 7,000 0,000,000 80,000 2,700 4,000,700 7,70,000 7,000 00,000 2,900 4,200 6,200 8,00 2,000 8,000 0,000 3,200 4,600 7,300 0,000 4,000 2, ,000 3,300 4,700 8,000,000 6,000 23,000 Visit /llsrk for 600 V urrent-limiting effects urrent-limiting Effects of LLNRK (20 V) Fuses Short ircuit pparent RMS Symmetrical urrent for Various Fuse Ratings urrent* , ,400 2,000 2,700 4,800,000 0,000,00,900 2,700 3,00 6,200 8,00,000,20 2,00 3,00 4,200 7,000 9,00 20,000,400 2,400 3,00 4,600 8,000 0,800 2,000,00 2,600 3,900,000 8,300,00 30,000,600 2,800 4,000,20 9,000 2,000 3,000,700 2,80 4,300,00 9,00 2,00 40,000,800 3,000 4,600,800 9,800 3,00 0,000,900 3,200 4,800 6,300 0,200 4,000 60,000 2,000 3,00,200 6,700,000,000 80,000 2,200 3,900,700 7,200 2,200 6,000 00,000 2,300 4,000 6,000 8,00 2,700 7,000 0,000 2,00 4,00 6,700 9,00 4,000 9, ,000 2,600 4,800 7,000 9,700,000 20,000 *Prospective RMS Symmetrical mperes Short-ircuit urrent Note: Data derived from Peak Let-Thru urves Visit /llnrk for 20 V urrent-limiting effects LLSRK_ID Fuses Quality onstruction for performance you can rely on Littelfuse LLSRK_ID Fuses feature true dual-element construction. This robust design withstands repeated surges within rated time delay without opening needlessly, eliminating needless downtime caused by power surges or equipment demands. Granular Quartz Filling Blown Fuse Indicator ssembly Plated End aps Precision Formed Short ircuit Element Fiberglass Reinforced Pultruded Body Elastomeric Silicone Overload Section Littelfuse POWR-GRD Products atalog

10 Fuses UL lass RK IDSR Series indicator powr-pro fuses 600 V /D Time-Delay / mperes /0 6/0 8 / /8 8/0 2 4 / /00 2 / /0 /8 2 /2 6 / /4 /4 2 8 / /0 4 /0 3 6 /4 7 / /0 /2 3 2 / /2 6 /0 3 /2 7 / lass RK Fuses Note: ll fuses rated and above are Indicator fuses. series amperage atalog System IDSR 30 IDSR30 IDSR030.T The IDSR combines a 600 VD capability with indication to provide an ideal solution for many D applications. pplications D circuits Solar inverters Motors Transformers Solenoids Fluorescent lighting T urves, downloadable D drawings and other technical information: /idsr LFR60 Series... pg. 90 dditional information in Blocks & Holders section... pg Please refer to the lass R dimensions... pg. 22 Peak Let-Thru urve IDSR Features/Benefits POWR-PRO Performance (see pg. 3) Indication Voltage Ratings: : 600 V D: 600 V Interrupting Ratings: : 200 k rms symmetrical 300 k rms symmetrical (Littelfuse self-certified) D: 20 k mpere Range: /0 600 pprovals: Standard and UL 98M, lass RK UL Listed (File No. E889) S ertified (File No. LR29862) PEK LET-THRU IN MPERES VILBLE FULT URRENT SYMMETRIL R.M.S. MPERES Note: For more information, see Peak Let-Thru Table on pg Littelfuse POWR-GRD Products atalog 9

11 Fuses UL lass RK FLNR_ID/FLSR_ID SERIES Indicator FUSES 20/600 V Dual Element Time Delay / mperes QPL lass RK Fuses /0 6/0 8 / /8* 8/0 2 4 / /00 2 / /0 /8 2 /2 6 / /4 /4 2 8 / /0 4 /0 3 6 /4 7 / /0 /2 3 2 / /2 6 /0 3 /2 7 /2 2 7** *FLNR only. FLNR, FLSR, FLSR_ID only. **FLNR, FLSR, FLSR_ID only Note: For / volt fuses, order non-indicating FLNR series fuses. vailable in both Indicating and Non-Indicating versions, the FLNR/FLSR series of fuses sets the standard for general purpose fuses. The dual element design provides advanced short circuit and overload protection. FLSR series fuses provide excellent protection for all types of circuits especially those containing motors. pplications Service entrance switches Switchboard mains and feeders Motor control central mains and motor branch circuits ll general purpose circuits Features/Benefits Indication Dual element design vailable without indication urrent limiting Voltage Ratings: : 20 V (FLNR_ID); 600 V (FLSR_ID) D: 2 V (FLNR /0 30 ); 2 V (FLNR_ID ); 300 V (FLSR_ID) Interrupting Ratings: : 200 k rms symmetrical 300 k rms symmetrical (Littelfuse self-certified) D: 20 k mpere Range: /0 600 pprovals: Standard 248-2, lass RK UL Listed (File No. E889) S ertified (File No. LR29862) Federal Specification WF-84 (QPL- W-F-84) Please refer to the lass R dimensions... pg. 22 Refer to the FLNR Series dimensions for FLNR_ID, and FLSR dimensions for FLSR_ID. type voltage series amp atalog System NON-Indicating 600 V FLSR FLSR0 FLSR0.T indicating 600 V FLSR_ID FLSR0ID FLSR0.TXID non-indicating 20 v flnr 60 flnr060 flnr060.t indicating 20 v flnr_id 60 flnr060id flnr060.txid T urves, downloadable D drawings and other technical information: /flsr /flnr LFR60 Series... pg. 90 LFR2 Series... pg. 90 Peak Let-Thru urve FLSR_ID Note: For more information, see Peak Let-Thru Table on pg Littelfuse POWR-GRD Products atalog

12 Fuses UL lass RK lass rk URRENT-LIMITING EFFETS urrent-limiting Effects of IDSR (600 V) Fuses Short ircuit pparent RMS Symmetrical urrent for Various Fuse Ratings urrent* , ,00 2,00 3,200,000,000,000 0,000,00,600 2,900 4,300 7,300 0,000 0,000,000,300,900 3,400,000 8,600 3,700,000 20,000,400 2,200 3,800,600 9,00,00 9,000 2,000,00 2,00 4,00 6,00 0,300 6,700 2,00 30,000,600 2,700 4,00 6,00,000 7,700 23,00 3,000,700 2,900 4,700 6,800,600 8,600 2,200 40,000,800 3,00,000 7,200 2,00 9,400 26,600 0,000,900 3,400,400 7,800 3,00 20,800 29,00 60,000 2,000 3,600,800 8,300 3,900 22,000 30,600 80,000 2,200 4,000 6,300 9,00,400 24,000 33,200 00,000 2,300 4,200 6,800 9,800 6,700 2,00 3,00 0,000 2,600 4,00 7,700,200 9,300 28,00 38, ,000 2,800 4,600 8,400 2,400 2,400 30,000 39,600 lass RK Fuses urrent-limiting Effects of FLSR and FLSR_ID (600 V) Fuses Short-ircuit urrent* pparent RMS Symmetrical urrent for Various Fuse Ratings ,000,20 2,00 3,200,000,000,000 0,000,600 2,80 4,300 7,20 0,000 0,000,000,800 3,400,000 8,00 3,00,000 20,000 2,20 3,800,00 9,00,70 9,000 2,000 2,40 4,00,700 0,20 7,000 2,000 30,000 2,700 4,00 6,400 0,70 8,000 23,000 3,000 2,900 4,800 6,700,00 9,000 24,20 40,000 3,000,000 7,20 2,000 9,00 27,000 0,000 3,400,20 7,70 3,000 2,000 29,000 60,000 3,600,70 8,00 4,000 22,000 30,00 80,000 3,900 6,20 9,000,000 24,000 33,000 00,000 4,300 6,70 9,70 6,00 26,000 3,000 0,000 4,00 7,600,00 9,000 28,000 38, ,000 4,600 8,400 2,20 2,00 30,000 40,000 urrent-limiting Effects of FLNR and FLNR_ID (20V) Fuses Short-ircuit urrent* pparent RMS Symmetrical urrent for Various Fuse Ratings ,000,400 2,00 3,00,000,000,000 0,000,0 2,00 3,900 6,00 9,00 0,000,000 2,000 3,0 4,400 7,20 0,00 4,000 20,000 2,20 3,400,000 8,20 2,000 6,000 2,000 2,400 3,70,20 9,000 2,00 6,00 30,000 2,0 4,00,600 9,00 3,00 8,000 3,000 2,60 4,300,800 9,70 4,000 9,000 40,000 2,800 4,400 6,20 0,20,000 20,000 0,000 3,000,000 6,00 0,00 6,000 2,000 60,000 3,200,20 7,000,00 7,000 23,000 80,000 3,400,70 7,00 2,00 9,000 2,00 00,000 3,80 6,000 8,000 3,00 2,000 27,00 0,000 4,00 7,000 9,000,200 24,000 3,00 200,000 4,300 7,00 9,70 6,00 26,000 34,000 *Prospective RMS Symmetrical mperes Short-ircuit urrent Note: Data Derived from Peak Let-Thru urves 200 Littelfuse POWR-GRD Products atalog 2

13 Fuses UL lass RK/RK lass R Series in inches (mm) lass RK/RK Fuses G F E K B D B H J FIG. FIG. 2 F E D MPS REFER TO FIG. NO. SERIES DIMENSIONS IN INHES (mm) B D E F G H J K / LLNRK/ FLNR LLSRK/ FLSR/ IDSR LLNRK/ FLNR LLSRK/ FLSR/ IDSR LLNRK/ FLNR LLSRK/ FLSR/ IDSR LLNRK/ FLNR LLSRK/ FLSR/ IDSR LLNRK/ FLNR LLSRK/ FLSR/ IDSR LLNRK/ FLNR LLSRK/ FLSR/ IDSR 2 (0.8) 2 (2.7) 2 (2.7) 9 6 (4.3) 64 (2.0) 32 (4.0) 3 8 (9.) (27.0) 3 4 (9.) 8 (.9) 3 6 (20.6) 3 32 (2.4) 3 6 (4.8) 8 (.9) 3 (76.2) 3 4 (9.) 8 (.9) 3 6 (20.6) 3 32 (2.4) 3 6 (4.8) 8 (.9) 2 (39.7) (2.4) 8 (.9) 6 (27.0) 3 32 (2.4) 4 (6.4) 7 8 (22.2) 7 8 (49.2) (2.4) 6 (27.0) 6 (27.0) 8 (3.2) 3 4 (9.) 4 (6.4) 9 32 (7.) 2 (2.7) (200.0) 4 (3.8) 6 (27.0) 6 (33.3) 8 (3.2) 3 4 (9.) 4 (6.4) 9 32 (7.) 2 (2.7) 7 8 (8.0) 2 (38.) 32 (37.3) 9 32 (40.) 3 6 (4.8) 8 (28.6) 7 6 (.) 9 32 (7.) 6 (7.) 9 8 (244.) 3 4 (44.) 32 (37.3) (46.8) 3 6 (4.8) 8 (28.6) 7 6 (.) 9 32 (7.) 6 (7.) 8 8 (29.) 2 (0.8) 6 (49.2) (3.2) 4 (6.4) 8 (4.3) 8 (.9) 3 32 (0.3) 6 (23.8) 8 (29.3) 2 2 (63.) 2 (0.8) (6.9) 4 (6.4) 8 (4.3) 8 (.9) 3 32 (0.3) 6 (23.8) (263.) 2 2 (63.) (60.3) (6.9) 4 (6.4) 2 (0.8) 3 4 (9.) 7 32 (3.) 8 (28.6) (339.7) 3 (76.2) (6.) (78.6) 4 (6.4) 2 (0.8) 3 4 (9.) 7 32 (3.) 8 (28.6) Littelfuse POWR-GRD Products atalog

14 Fuses SPFR Solar Inverter SPFR SERIES 000 VD High-amperage Solar FUSES 000 VD Fast-cting mperes Voltage Rating: 000 VD mpere Ratings: 20, 300, 30 and 400 Interrupting Rating: 0,000 ; Time onstant less than ms Fuse Type: Fast-cting pprovals: UL Recognized 000 VD UL 248 (File No. 76) S ertified (File No ) SPFR Solar Fuse atalog SYSTEM number MPERGE SPFR 20 SPFR20.X 20 SPFR 300 SPFR300.X 300 SPFR 30 SPFR30.X 30 SPFR 400 SPFR400.X 400 SPFRHV Series... pg. 06 The SPFR series was designed to meet the growing needs of the solar industry with higher amperage and voltage requirements. It was developed specifically for solar applications ranging from 20 to 400. in mm (inches) pplications Solar inverters High-amperage combiner boxes Features/Benefits D voltage rating meets European system requirements and North merican utility scale requirements Multiple amperage ratings UL lass H Full range protection Downloadable D drawings and other technical information: /spfr [ [7.478 Look for this logo to indicate products that are used in solar applications. Visit our website /green for the latest updates on approvals, certifications, codes and standards. 200 Littelfuse POWR-GRD Products atalog 23

15 Fuses UL lass K NLN/NLS Series (one-time) fuses 20/600 V One-Time -600 mperes lass K/H Fuses 7 *2 * * * * * * *20 * *NLKP series available only in those amperages preceded by an asterisk. series amperage atalog System NLS 20 NLS020 0NLS020.T NLN NLN0 0NLN0.T NLN/NLS fuses provide low cost protection for general purpose feeder and branch circuits when available short circuit currents are less than 0 k. anadian Electrical ode NLKP Type P fuse available. See links for more information. pplications General purpose residential and commercial circuits with little or no motor load. Features/Benefits Economical 0 k interrupting rating Indicating and din mount holders available T urves, downloadable D drawings and other technical information: /nln /nls /nlkp LFH60 Series... pg. 90 LFH2 Series... pg. 89 Please refer to the lass K/H dimensions... pg. 26 Voltage Ratings: : 20 V (NLN) 600 V (NLS) D: 20 V (NLN) 400 V (NLS 3 60 ) 00 V (NLS 8 30 ) (NLS ) 600 V (NLS 7 ) (NLS ) Interrupting Ratings: : 0 k rms symmetrical (NLN/NLS) D: 20 k (NLN/NLS 60 ) 0 k (NLN/NLS ) mpere Range: 600 amperes (NLN/NLS) pprovals: NLN/NLS: Standard 248-9, lass K UL Listed (File No. E889) S ertified (File No. LR29862) Littelfuse POWR-GRD Products atalog

16 Fuses UL lass H RLN/RLS series renewable fuses and lkn/lks series links 20/600 V Renewable -600 mperes * * *RLS only. These require two links per fuse. lass K/H Fuses type voltage atalog System fuse 600 RLS020 0RLS020.T fuse 20 rln020 0rln020.T link 600 lks02 0lks02.s link 20 lkn030 0lkn030.s T urves, downloadable D drawings and other technical information: /rln /rls Littelfuse RLN and RLS series renewable fuses are a quality product that have traditionally been used to provide low cost protection of general purpose feeder and branch circuits where available short-circuit currents do not exceed 0,000 amperes. However, generally increased levels of available fault current and the distinct possibility that renewable fuses may be improperly renewed, have rendered them unsafe. The use of these fuses in new applications is prohibited by law. pplications General purpose residential and commercial circuits with little or no motor load. Replacement only Features/Benefits Replaceable fuse links 0 k Interrupting Rating Voltage Ratings: : 20 V (RLN); 600 V (RLS) Interrupting Ratings: : 0 k rms symmetrical mpere Range: 600 pprovals: Standard 248-6, lass H UL Listed (File No. E889) S ertified (File No. LR29862) Fuse Links: to order, specify LKN (20V) or LKS (600V) plus ampere rating. LFH60 Series... pg. 90 LFH2 Series... pg. 89 Please refer to the lass K/H dimensions... pg. 26 Still using lass H fuses? Littelfuse offers several fuse and fuseblock combinations that can greatly improve electrical safety. LLNRK/LLSRK... pg. 6 FLNR/FLSR fuses... pg. 20 LFR fuseholders... pg Renewable Fuse Guide for Proper Usage Renewable fuses should only be used where short-circuit currents are known to be less than 0,000 amperes, and where correct replacement of open links is assured. Renewable fuses and links are not recommended for new applications. 200 Littelfuse POWR-GRD Products atalog 2

17 Fuses UL lass K/H lass K/H lass K/H Fuses in inches (mm) D B B F D G FIG. FIG. 2 E mperes Refer to Fig. No In Inches (mm in parentheses) Series B D E F G NLN/RLN 2 (0.8) 2 (2.7) 2 (2.7) 9 6 (4.3) NLS/RLS (27.0) 3 4 (9.) 8 (.9) 3 6 (20.6) NLN/RLN 3 (76.2) 3 4 (9.) 8 (.9) 3 6 (20.6) NLS/RLS 2 (39.7) (2.4) 8 (.9) 6 (27.0) NLN/RLN 7 8 (49.2) (2.4) (2.4) 6 (27.0) 8 (3.2) 3 4 (9.) 6 (33.3) NLS/RLS (200.0) 4 (3.8) (2.4) 6 (33.3) 8 (3.2) 3 4 (9.) 9 6 (39.7) NLN/RLN 7 8 (8.0) 2 (38.) 3 8 (34.9) 9 6 (39.7) 3 6 (4.8) 8 (28.6) 7 8 (47.6) NLS/RLS 9 8 (244.) 3 4 (44.) 3 8 (34.9) (46.8) 3 6 (4.8) 8 (28.6) (3.2) NLN/RLN 8 8 (29.) 2 (0.8) 7 8 (47.6) (3.2) 4 (6.4) 8 (4.3) (6.) NLS/RLS 8 (29.3) 2 2 (63.) 7 8 (47.6) (6.9) 4 (6.4) 8 (4.3) (73.0) NLN/RLN (263.) 2 2 (63.) 2 4 (7.2) (6.9) 4 (6.4) 2 (0.8) (73.0) NLS/RLS (339.7) 3 (76.2) 2 4 (7.2) (78.6) 4 (6.4) 2 (0.8) (87.3) Littelfuse POWR-GRD Products atalog

18 Fuses UL lass J JTD_ID Series Indicator POWR-PRO FUSES 600 V Time Delay 8 / mperes lass J Fuses type series amperage atalog System Indicating JTD_ID 60 JTD60ID 0JTD060.TXID non-indicating JTD 60 JTD60 0JTD060.T Time-current curves, data sheets and additional technical information: /jtd The Littelfuse POWR-PRO JTD_ID Indicator lass J fuse provides visual blown fuse indication and maximum protection in a compact package. The current-limiting time delay JTD_ID offers a patented design which reduces nuisance fuse openings. pplications Fused combination motor controllers and motor control centers Transformer protection Protection for series rated molded case circuit-breaker panels General purpose circuits Features urrent-limiting IE Type 2 Protection Indication and non-indication version available POWR-PRO Performance (see pg. 3) Indicating and din mount holders available Voltage Ratings: : 600 V D: 300 V ( ); 00 V (0 600 ) Interrupting Rating: : 200 k rms symmetrical 300 k rms symmetrical D: 20 k mpere Range: pprovals: : Standard 248-8, lass J UL Listed (File No. E889) S ertified (File No. LR29862) D: Littelfuse self-certified LFJ60 Series... pg. 8 LPSJ Series...pg. 4 Please refer to the lass J dimensions... pg. 29 Peak Let-Thru urve JTD_ID PEK LET-THRU IN MPERES VILBLE FULT SYMMETRIL R.M.S. MPERES Note: For more information, see Peak Let-Thru Table on pg Littelfuse POWR-GRD Products atalog 27

19 Fuses UL lass J JLS series FUSES 600 V Fast-cting -600 mperes QPL lass J Fuses type series amperage atalog System non-indicating JLS 0 JLS0 0JLS0.X T curves, downloadable D drawings and other technical information: /jls LFJ60 Series... pg. 8 LPSJ Series...pg. 4 Peak Let-Thru urve JLS series fuses provide space saving, fast-acting overload and short-circuit protection for non-inductive loads. For ap pli ca tions where short-duration surg es and spikes may cause nuisance fuse opening, consider the use of Littelfuse POWR-PRO JTD or JTD_ID series time-delay fuses. pplications General purpose circuits with little or no motor load. Resistive loads, such as resistance electric heat. Loads requiring fast-acting overload protection, such as equipment containing solid-state devices. JLS PEK LET-THRU IN MPERES Voltage Ratings: Interrupting Ratings: mpere Range: pprovals: 600 V 200 k rms symmetrical 600 Standard 248-8, lass J UL Listed (File No. E889) S ertified (File No. LR29862) Federal Specification WF-84 (QPL-W-F-84) Please refer to the lass J dimensions... pg VILBLE FULT URRENT SYMMETRIL R. M. S. MPERES Littelfuse POWR-GRD Products atalog

20 Fuses UL lass J class j dimensions and current-limiting effects in inches (mm) D G F lass J Fuses Fig. Fig. 2 B D E H JTD_ID, JTD and JLS mperes Refer to Fig. No. *70-00 JLS dimension = (2.4) In Inches (mm) B D E F G H (7.2) 2 (2.7) 3 6 (20.6) (60.3) 8 (.9) 6 (27.0) (66.7) (89.7) (94.) 4 8 (7.) 8 (28.6)* 3 4 (9.) 9 32 (7.) 8 (3.2) (76.2) (08.7) 4 32 (3.) 3 4 (46.) 2 (38.) 8 (28.6) 9 32 (7.) 3 6 (4.8) (8.7) 8 (30.2) 3 8 (36.) 7 8 (8.0) 2 (0.8) 8 (4.3) 3 32 (0.3) 4 (6.4) (9.3) (48.4) 6 32 (6.4) 8 (203.2) 2 2 (63.) 2 (0.8) 7 32 (3.) 3 8 (9.) urrent-limiting Effects of JTD_ID (600 V) Fuses Short ircuit urrent pparent RMS Sym met ri al current for Various Fuse Ratings , ,00,800 2,800 4,800,000 0, ,900 2,40 3,600,700 7,70,000 77,00 2,00 2,800 4,00 6,00 9,000 20,000 82,2 2,300 3,000 4,400 7,20 9,700 2, ,200 2,00 3,300,000 8,000 0,00 30,000 90,300 2,600 3,00,00 8,400,000 3,000,000,30 2,700 3,700,400 9,000 2,000 40,000,00,400 2,800 3,900,600 9,200 2,00 0,000,00,00 3,000 4,200 6,000 0,000 3,000 60,000,200,600 3,200 4,00 6,400 0,00 4,000 80,000,300,700 3,400 4,900 7,200,200,00 00,000,37,800 3,600,200 7,800 2,200 6,00 0,000,00 2,000 3,90 6,000 9,000 4,00 9, ,000,600 2,7 4,000 6,00 0,000 6,000 20,00 Prospective RMS Symmetrical mperes Short-ircuit urrent Note: Data derived from Peak Let-Thru urves 200 Littelfuse POWR-GRD Products atalog 29

21 Fuses UL lass T JLLN/JLLS lass T FUSES 300/600 V Fast-cting -600 mperes lass T Fuses JLLN/JLLS fuses are less than /3 the size of comparable lass R fuses and are typically used for short circuit protection of drives and surge sensitive components. When rated in accordance with the NE, JLLN/JLLS fuses provide fast-acting overload and short circuit protection for noninductive circuits and equipment. pplications Variable speed drive protection ompact mains switches Features/Benefits Extremely current-limiting ompact design 200 k Interrupting Rating JLLN Series is RoHS ompliant Voltage Ratings: : 300 V (JLLN); 600 V (JLLS) D: 2 V (JLLN 30 ) 60 V (JLLN 3 60 ) 2 V (JLLN ) 2 V (JLLN ) 300 V (JLLS) Interrupting Ratings: : 200 k rms symmetrical D: 20 k (JLLN ) (JLLN ) (JLLS 200 ) mpere Range: 200 pprovals: : Standard 248-, lass T UL Listed (File No. E889): JLLN (-200 ) JLLS (-800 ) UL Recognized (File No. E76) JLLS ( ) S ertified (File No. LR29862) JLLN/JLLS ( 600 ) D: UL Listed (File No. E889): JLLN (3 200 ) JLLN (0 200 ) Littelfuse self-certified: JLLN -30 JLLS ( 200 ) * *JLLS only Note: ontact the factory for RoHS compliant lass T fuses. series voltage amperage atalog System JLLS 600 V 6 JLLS006 JLLS006.T JLLN 300 V 0 JLLN00 JLLN00.T T urves, downloadable D drawings and other technical information: /jlln /jlls LFT30 Series... pg. 9 LFT60 Series... pg. 9 LSR Series for pg. 20 Please refer to the lass T dimensions... pg. 3 Peak Let-Thru urve JLLS Note: For more information, see Peak Let-Thru Table on pg Littelfuse POWR-GRD Products atalog

22 Fuses UL lass T lass t dimensions and current-limiting effects in inches (mm) D B F D F B E D G lass T Fuses Fig. Fig. 2 Fig. 3 mperes Refer to Fig. No Series in Inches (mm) B D E F G JLLN 7 8 (22.2) 9 32 (7.) 3 32 (0.3) JLLS 2 (38.) 9 32 (7.) 9 6 (4.3) JLLN 7 8 (22.2) 9 32 (7.) 9 6 (4.3) 2 JLLS 9 6 (39.7) 3 6 (20.6) 3 32 (0.3) (2.4) 6 (.6) 3 32 (27.8) JLLN 2 32 (4.8) 9 6 (39.7) 3 4 (9.) 3 6 (20.6) (2.4) 9 32 (7.) 8 (3.2) JLLS (7.0) (9.9) 3 4 (9.) 3 6 (20.6) 4 64 (4.7) 9 32 (7.) 8 (3.2) JLLN (6.9) 6 (42.9) 7 8 (22.2) 6 (27.0) (2.4) 32 (8.7) 3 6 (4.8) JLLS 3 4 (82.6) 2 2 (63.) 7 8 (22.2) 6 (27.0) 2 32 (42.) 32 (8.7) 3 6 (4.8) JLLN (69.9) (46.8) (2.4) 6 (33.3) 3 64 (2.0) 3 32 (0.3) 4 (6.4) JLLS 3 8 (92.) (69.) (2.4) 9 32 (40.) (43.7) 3 32 (0.3) 4 (6.4) JLLN 3 6 (77.8) 2 32 (.6) 4 (3.8) 9 32 (40.) 7 8 (22.2) 3 64 (2.3) 6 (7.9) JLLS (0.2) (7.0) 4 (3.8) 2 6 (2.4) (44.8) 3 64 (2.3) 6 (7.9) JLLN (8.7) (64.3) 3 4 (44.) 2 6 (2.4) 7 8 (22.2) 3 64 (3.9) 3 8 (9.) JLLS (09.9) 3 64 (80.6) 3 4 (44.) 2 2 (63.) 64 (47.2) 3 64 (3.9) 3 8 (9.) JLLN 4 (0.6) (64.3) 2 (0.8) 2 2 (63.) 32 (26.2) (.) 7 6 (.) JLLS.27 (33.9) 3.80 (96.) 2 (0.8) 2.63 (66.8) 2.30 (8.4) 0.67 (.) 0.44 (.2) urrent-limiting Effects of JLLN (300 V) fuses Short ircuit urrent* pparent RMS Symmetrical urrent for Various fuse ratings , ,00,60 3,00 4,000,000,000 0, ,000,400 2,00 4,400,00 6,70 8,20,000,000,00,600 2,400,000,900 7,70 0,000 20,000,00,20,800 2,700,00 6,00 8,70,000 2,000,230,300,90 2,900 6,000 7,000 9,00 2,000 30,000,300,47 2,00 3,00 6,400 7,00 0,000 2,00 3,000,330,7 2,0 3,300 6,70 7,70 0,00 3,00 40,000,430,600 2,300 3,00 7,000 8,000,000 4,000 0,000,00,70 2,400 3,700 7,00 8,70 2,000,000 60,000,700,900 2,700 4,000 8,000 9,00 2,00 6,000 80,000,80 2,00 2,800 4,400 9,000 0,00 4,000 7,00 00,000 2,000 2,20 3,0 4,800 9,70,00,000 8,00 0,000 2,300 2,600 3,600,00,000 3,000 7,00 22, ,000 2,600 2,800 3,900 6,000 2,000 4,00 9,00 24,000 *Prospective RMS Symmetrical mperes Short-ircuit urrent Note: Data Derived from Peak Let-Thru urves urrent-limiting Effects of JLLS (600 V) fuses Short ircuit urrent* pparent RMS Symmetrical urrent for Various fuse ratings ,000 70,22,400 2,80 4,600,000,000,000 0,000 94,2,700 3,600 6,000 8,00 9,400 0,000,000,00,700 2,000 4,00 6,600 9,70 0,00 3,000 20,000,0,900 2,200 4,40 7,20 0,00,000 4,70 2,000,300 2,00 2,400 4,800 8,000,00 2,00,00 30,000,37 2,0 2,40,000 8,20 2,000 3,70 6,00 3,000,400 2,20 2,600,00 8,00 3,000 4,000 7,000 40,000,42 2,400 2,800,200 8,700 4,000 4,70 8,000 0,000,600 2,40 2,900 6,000 9,00 4,00 6,000 20,000 60,000,60 2,62 3,00 6,20 0,000,00 7,300 2,000 80,000,82 2,800 3,400 7,000,000 7,000 8,70 23,000 00,000 2,000 3,00 3,700 7,20 2,000 8,000 20,000 2,000 0,000 2,20 3,400 4,300 8,00 3,000 2,000 23,000 28,00 200,000 2,40 3,800 4,600 9,000,000 23,000 2,000 3,000 *Prospective RMS Symmetrical mperes Short-ircuit urrent Note: Data Derived from Peak Let-Thru urves 200 Littelfuse POWR-GRD Products atalog 3

23 Fuses UL lass G SL lass G Fuses 480/600 V Time-Delay / 2-60 mperes QPL lass G Fuses / series amperage atalog System SL 0 SL00 0SL00.T T urves, downloadable D drawings and other technical information: /slc Littelfuse SL fuses provide cost effective branch circuit protection. Fuse length varies to prevent over-fusing. ompact lass G fuses were the first fuse series to approach midget fuse dimensions and meet NE requirements for branch-circuit protection. pplications Branch circuit protection Features/Benefits Branch circuit rated urrent-limiting 00 k interrupting rating 600 V rated /2-20 Voltage Ratings: 600 V ( /2 20 ) 480 V (2 60 ) 70 VD ( /2 30 ) (Littelfuse self-certified) Interrupting Ratings: : 00 k rms symmetrical D: 0 k mpere Range: /2 60 pprovals: Standard 248-, lass G UL Listed (File No. E889) S ertified (File No. LR29862) Federal Specification WF-84 (QPL-W-F-84) LG300 Series... pg. 00 L30030G Series... pg. 00 MPERES REFER TO FIG. NO. B DIMENSIONS IN INHES (mm ) B D /2 /6 (33.3) 3/8 (9.) 9/32 (7.) 3/32 (0.3) 20 3 /32 (3.7) 3/8 (9.) 9/32 (7.) 3/32 (0.3) 2, 30 /8 (4.3) 3/8 (9.) 9/32 (7.) 3/32 (0.3) /4 (7.2) 3/8 (9.) /2 (2.7) 3/32 (0.3) in inches (mm) Fig D Littelfuse POWR-GRD Products atalog

24 Fuses UL lass /D MR Series POWR-PRO FUSES 600 V Dual Element Time-Delay 2 / 0-60 mperes 2/0 2 3 /2 6 /4 2 3 /4 /4 2 / /0 4 /0 2 /2 4 /2 7 /2 7 /2 4 /2 /2 2 8 / /0 6 /0 3 6 / /0 8 /0 3 2 / series amperage atalog System MR 4 MR04 MR04.T lass /D Fuses T urves, downloadable D drawings and other technical information: /ccmr The MR series is ideal for space saving protection of motors up to 40 hp*. It was designed specifically to withstand sustained starting currents of small motors. The MR 60 fuse is the smallest 60 fuse available rated at 600 V. ompared to other UL Listed fuses, lass fuses are the most current-limiting, rating for rating. pplications Motor and motor branch circuit protection Features/Benefits POWR-PRO Performance (see pg. 3) Extremely current-limiting Ratings up to 60 mps 300 k Interrupting Rating (self-certified) Voltage Ratings: : 600 V D: 20 V (MR 2 /0 2 ) (MR 4 /2 0 ) (MR 3 60 ) 300 V (MR 2 /4 4 ) 00 V (MR 2 30 ) Interrupting Ratings: : 200 k rms symmetrical 300 k Littelfuse self-certified D: 20 k mpere Range: 2/0 60 pprovals: : Standard 248-4, lass UL Listed /0-30 (File No. E889) Standard 248, lass D UL Listed 3-60 (File No. E889) S ertified /0-30 (File No. LR29862) D: Littelfuse self-certified * onsult Motor Protection Tables on pg. 203 in the Technical pplication Guide section for specific motor sizing information. LPS Series... pg. 08 L60030 Series...pg. 0 L60060 Series...pg. 0 Please refer to the lass /D dimensions... pg. 3 Peak Let-Thru urve MR Note: For more information, see Peak Let-Thru Table on pg Littelfuse POWR-GRD Products atalog 33

25 Fuses UL lass class cc fuses KLDR Series 600 V/300 VD Time-Delay /0-30 mperes lass /D Fuses KLDR fuses are time-delay fuses designed to protect control transformers, so le noids and similar inductive com ponents with high mag ne tiz ing currents during the first half-cycle. They provide ex cel lent protection of motor branch circuits con tain ing IE or NEM rated motor con trol lers or contactors. Voltage Ratings: : 600 V D: 300 V Interrupting Ratings: : 200 k rms symmetrical D: 20 k mpere Range: /0 30 pprovals: : Standard 248-4, lass UL Listed /0-30 (File No. E889) S ertified /0-30 (File No. LR29862) D: Littelfuse self-certified /0 6/0 8 /0 4 /2 0 /8 3/4 2 2 /00 8/0 2 /4 6 /0 3/6 2 /2 6 7 /2 2/0 /8 2 8 /0 6 /4 20 /4 / /0 4 /0 3 2 /0 7 /2 30 4/0 /2 3 /2 8 /2 6 /0 4 9 series amperage atalog System KLDR 0 KLDR00 KLDR00.T For additional information, visit: /kldr LPS Series...pg. 08 L60030 Series...pg. 0 Please refer to the lass /D dimensions... pg. 3 KLKR Series 600 V/300 VD Fast-cting /0-30 mperes KLKR Series lass fuses are fast-acting fuses intended for general purpose branch circuit protection. Their compact size, fast-acting overload response, and highly current-limiting design make them ideal for use in OEM equipment and control panels. Voltage Ratings: : 600 V D: 300 V Interrupting Ratings: : 200 k rms symmetrical D: 20 k mpere Range: /0 30 pprovals: : Standard 248-4, lass UL Listed /0-30 (File No. E889) S ertified /0-30 (File No. LR29862) D: Littelfuse self-certified /0 /2 2 /2 6 2 /8 3/ /0 3 / /4 / / series amperage atalog System KLKR 2 KLKR02 KLKR02.T For additional information, visit: /klkr LPS Series...pg. 08 L60030 Series...pg. 0 Please refer to the lass /D dimensions... pg Littelfuse POWR-GRD Products atalog

26 Fuses UL lass /D lass cc/cd dimensions and current-limiting effects in inches (mm).0 (38 ) (2 7).2 (6 4).2 (3 2).4 (0 3) urrent-limiting Effects of MR (600 V) fuses.80 (2 6) (47 8) lass /D Fuses Short ircuit pparent RMS Symmetrical current For Various Fuse Ratings urrent* , , , , ,000 2, ,00 30, ,2 3, ,7 40, ,000,200 0, ,000,00,300 60, ,00,2,30 80, ,000,2,200,400 00, ,00,200,20,00 0, ,0,300,400, , ,200,400,40,70 *Prospective RMS Symmetrical mperes Short-ircuit urrent Note: Data Derived from Peak Let-Thru urves Peak Let-Thru urve KLDR Peak Let-Thru urve KLKR KLDR KLKR PEK LET-THRU IN MPERES PEK LET-THRU IN MPERES VILBLE FULT URRENT SYMMETRIL R. M. S. MPERES VILBLE FULT URRENT SYMMETRIL R. M. S. MPERES Littelfuse POWR-GRD Products atalog 3