Energy Saving HRC Fuse-Links Cylindrical, Bolted & Blade Type
About us Larsen & Toubro is a technology-driven company that infuses engineering with imagination. The Company offers a wide range of advanced solutions in the field of Engineering, Construction, Electrical & Automation, Machinery and Information Technology. L&T Switchgear, a part of the Electrical & Automation business, is India's largest manufacturer of low voltage switchgear, with the scale, sophistication and range to meet global benchmarks. With over five decades of experience in this field, the Company today enjoys a leadership position in the Indian market with a growing international presence. It offers a complete range of products including powergear, controlgear, industrial automation, building electricals & automation, reactive power management, energy meters, and protective relays. These products conform to Indian and International Standards. Switchgear Factory, Mumbai Switchgear Factory, Ahmednagar
HRC Fuse-links Cylindrical & Blade Type L&T, India's largest manufacturer of low tension switchgear, offers the new generation of low watt loss HRC fuselinks designed as per the new IS 13703 / IEC 09 standards. Type HF & HN Features & Benefits HF - 3A & HN 3-800A High breaking capacity: 80kA for HF Type & 0kA for HN Type Unique offerings: 3A Cylindrical Fuse 1A in Size 000 DIN Type Fuse blown indication: Through a red pop-up indicator Low let through energy Low watt loss leading to power saving and cooler running of associated products like SDFs Conform to IS 13703 (Part ) / IEC 09- Suitable fuse base & fuse pulling handle 1
HRC Fuse-links Bolted Type Type HG & HQ Features & Benefits HG - 3A & HQ - 30A Breaking capacity: 80 ka at 1 V. for HG & HQ Fuses Fuse Size: F1 / A1 - A / B1 - B / C - C3 Sizes - from Amp. to 30 Amp. Low watt losses ensuring that associated equipment runs cooler Can be used with FN series SDF suitable for Bolted type fuses Suitable fuse base
Technical Data Selection Chart for Cylindrical Type Fuse-Links - HF Rated Voltage : 1 V Rated Breaking Capacity : 80 ka at 1 V Size of the fuse link Rating (A) Description Cat. Nos. Rated watt loss (W) Watt loss limits as per IS 13703 (W) Suitable for S-D-F Units type FN / FNX or Equivalent Size 1x1 8 1 0 3 0 0 3 Suitable for Type FN 3 / 3 / FNX 3/ 3 S-D-F. Also for HCO 3 Fuse base Suitable for Type FN 3/ FNX 3 S-D-F Also for HC 3 Fuse base SF901 SF901 SF901 SF9017 SF9018 SF9010 SF9011 SF901 SF901 SF9013 SF9018 SF9019 0. 0. 1.1 1. 1.0.. 3..0.0.0 7. 7 3, 3 3, 3 3, 3 3, 3 3, 3 3, 3 3, 3 3, 3 3, 3 3 3 3 HF 3A HF A Selection Chart for Blade Type Fuse-Links - HN Rated Voltage : 1 V Size of the fuse link Size 000 Size 00 Size 0 Size 1 Size Size 3 Rating 3 A 80 A 0 A 1 A 3 A 80 A 0 A 1 A 10 A 80 A 0 A 1 A 10 A 00 A 1 A 10 A 00 A 0 A 31 A 00 A 0 A 31 A 00 A 31 A 00 A 00 A 30 A 800 A Rated Breaking Capacity : 0 ka at 1 V Cat. Nos. SF990 SF991 SF99 SF99 SF907 SF908 SF909 SF9030 SF9939 SF918 SF919 SF9130 SF9131 SF913 SF930 SF931 SF93 SF933 SF93 SF933 SF9333 SF933 SF933 SF93 SF93 SF93 SF937 SF9938 Rated watt loss (W).3. 7 8..7.9 7. 9.8 1 8.3 9.1 11.3 1.7 1..3 1.3 1.3 17.3. 1.1 1.9 0..9 0..7 3.1. 8 *Suitable fuse base & fuse pulling handle are detailed in following pages Watt loss limits as per IS 13703 0 Amp, Fuse-7. W 0 Amp, Fuse-7. W 10 Amp, Fuse-1 W 0 Amp, Fuse-3 W 00 Amp, Fuse-3 W 30 Amp, Fuse-8 W Guidelines for selection While selecting fuse-links, the following points should be considered : Fuse-links type HF & HN are suitable for system voltage up to 1 V+ Select the suitable size and rating of fuse-link for switch-disconnector fuse unit as per the fuse selection chart Ensure that the breaking capacity of the fuse link is higher than the prospective fault current Fuses should be selected such that discrimination is achieved with other protective devices in the system Suitable for S-D-F units type FN / FNX or Equivalent 0, 1, 10 0, 1, 10 0, 1, 10 0, 1, 10 0, 1, 10 0, 1, 10 0, 1, 10 1, 10 10 00 00 00 00 00 0, 31 0, 31 0, 31 0, 31 31 00 00 00 00 30, 800 30, 800 30, 800 30, 800 800 000 00 0 1 3 3
Fuse holders, Fuse bases & Cylindrical / DIN fuse-links Fuse pulling handle suitable for Rated Current (A) 3 3 10 0 800-3 3-800 Suitable fuse-link Type Description Cat. No. Type Range (A) HCO 3 HC 3 HB 10 HB 0 HB 800 HF HN Fuse holder Fuse holder Fuse base Fuse base Fuse base Fuse pulling handle Fuse pulling handle HF HF HN-Size 000 & 00 HN-Size 0 & 1 HN-Size & 3 HF HN -3-3 3-10 80-0 00-800 -3 3-800 SK9131 SK93 SK900 SK900 SK91 SK9118 SF901 HB HCO Selection Chart for Bolted type Rated Voltage : 1 V Rated Breaking Capacity : 80 ka Utilisation Category : gg Fixing Method Size Rating (A) Description Cat. No. Power loss (W) Watt loss limits as per IS 13703 Offset, staggered Offset F1 A1 A1L A A3 A ST307 ST307 ST3077 Suitable for type HD ST3078 0H/0P/0B, HD 1 3H/3P/3B Fuse base ST3079 0 ST30730 ST30731 3 ST3073 ST3073 1 0 3 0 3 0 3 1 0 3 3 0 3 80 0 1 10 Suitable for type FN 3/3 Switch disconnector Fuse unit Suitable for type HK 3H/3B Fuse base Suitable for type FN 0 Switch disconnector Fuse unit, also for HK 3B/3H Fuse base Suitable for type FN 0/1/10 Switch disconnector Fuse unit, also for HK 1H/1B Fuse base ST30737 ST30738 ST30739 ST3070 ST3071 ST307 ST3073 ST37 ST38 ST39 ST387 ST388 ST3077 ST3078 ST3079 ST3070 ST3071 ST307 ST3073 ST3079 ST3070 ST3071 ST3077 ST3078 ST3079 ST389 0.3 0. 1. 1. 1.8..9 3.0 0.3 0. 1. 1. 1.8..9 3.0. 3.1 3..0.7 0.8 1. 1..0.8 3.8....8 9.1 9. 1-3 A, 3.W 0 A,.7W 0 A, 3.W 3 A,.W 3 A,.9W 0 A, 9.1W F1 A1 A1 L A A3
Selection Chart for Bolted type Fuse Links - HG & HQ Rated Voltage : 1 V Rated Breaking Capacity : 80 ka Utilisation Category : gg Fixing Method Size Rating (A) Description Cat. No. Power loss W Watt loss limits as per IS 13703 B1 80 0 1 Suitable for type FN 00 Switch disconnector Fuse unit ST3077 ST3077 ST3077 9.. 1.0 0 A, 9.1W B1 Centre Tag, holes B B3 1 10 00 0 31 Suitable for type FN 00/0 Switch disconnector Fuse unit Suitable for type FN 0/31 Switch disconnector Fuse ST30777 ST30778 ST30779 ST30781 ST3078 1.0 19. 0. 8 3 00 A, 17W 0 A, 3W B B3 Centre Tag, holes B C C3 3 00 00 00 30 30 Suitable for type FN 00 Switch disconnector Fuse unit Suitable for type FN 30 Switch disconnector Fuse unit - ST30783 ST3078 ST3078 ST3078 ST30787 ST30788 3 38 38 0 00 A, 0W 30 A, W B C Fuse holders suitable for bolted fuse-links Rated Current Type Connection Method Fuse Type Suitable Fuse Range (A) Cat. No. HD 0H Both side cable F1-0 ST3077 0 HD 0P Both side busbar F1-0 ST30773 HD 0B Top side busbar & bottom cable F1-0 ST307 HD 3H Both side cable F1-3 ST30733 3 HD 3P HD 3B Both side busbar Top busbar & bottom cable F1 F1-3 -3 ST3073 ST3073 HK 3H Both side cable A -3 ST307 HK 3B Top busbar & bottom cable A -3 ST307 3 HK 3H HK 3B Both side cable Top busbar & bottom cable A3 A3 3-3 3-3 ST307 ST3073 HD 3H HK 3H HK 3H HK 1H 1 HK 1H HK 1B Both side cable Top busbar & bottom cable A A 80-1 80-1 ST30770 ST30771
3 Overall Dimensions HF Fuse-link 1.3 1 Indicator HN Fuse-link Size 000 Size 00.9 9. 17 0.... 1.8 3 9. 1 9. 1. 78. 7 1 79 8 Size 0 Size 1 / / 3 7..8 0.9 7. 1 3.1 0. 1 1. 1 7 39 3 A B C D F E Type Size 1 Size Size 3 A 0.. 3. B 13 10 10 C 11.0 1.0 17. D 9 73 E 0 8 0 F 9 73 All dimensions are in mm
Overall Dimensions 8 0 7 O7. Type HC* 3A 1Vac 19 33 HCO / HC HB 10 07 80 +3-0 HB 0 19 3 O. 0 30 0 39. 88 1 17 0 0 1 30 Holes Ø. for M for Mounting Holes Ø9 for M8 for Mounting 1 HB 800 All dimensions are in mm 7
Overall Dimensions HG, SIZE F1 HQ, SIZE A1 HQ, SIZE A1L Ø13. Ø13. Ø17. 11.0 11 HQ, SIZE A HQ, SIZE A3 HQ, SIZE A 3. Ø3 1. 8.7 7 73 8 3. 33... 1.0. Ø3 Ø31. 1.7 33. 19. 8.7. 9 1 7 73 89. 3.. 3.. HQ, SIZE B1 HQ, SIZE B O31. 3. 19 8.7 Ø39 3. 19 8.7 11 111 131. 70. 111 131. HQ, SIZE B3 Ø0.3 3. 8.7 Ø0 HQ, SIZE B.3 8.7 HQ, SIZE C Ø70...3 71. 111 131. 73 111 131. 7. 133 11 3. 33. 38. 3.. 18.7 11. 11. 1.. 8 All dimensions are in mm
111.7 7 1.. 9.. 8 77. 1. 3. 7 1 8 x11. 3 R8. 13 x. 3. M8 3.7. 7.1 9 1 M. 1.7 90. 3 9. 31. 30. 80. 8 131.7 9 19. 1. 1. 1 18. HD 0 / HD 3 3...3 3.8 3 3.8 7.9 7 13. 0 1 R7. 7.7. 3 17..7 8. M 17 31.. 0 31 1. 8 98. 3. x. 38. R 7. 3. 1.8 7.7 11.3 0 9. M. Overall Dimensions HK 3 31. HK 3 HK 1 x8 1 x 7. 7.. 30.0 1. 1 All dimensions are in mm 9
Characteristics Curve HRC Fuse-links Type HF Time-Current Characteristics A A A 8 B A 1 A 0 A A 3 A 0 A 0 A 3 A 00 0 Pre-arcing Time (seconds) 1 0.1 0.01 3 3 0 3 00 3 Symmetrical Current (A) Cut-off Current Characteristics Cut-off Current-ka (peak) (asymmetrical Fault Conditions) 1.0 0.1 3 A 0 A 0 A A 3 A 0 A 1 A 8 A A A A A 8 8 8 0.01 0.1 1.0 8 Prospective Current - ka (RMS) Symmetrical
Characteristics Curve HRC Fuse-links Type HN Time-Current Characteristics 000 3 A 80 A 0 A 1 A 10 A 00 A 0 A 31 A 00 A 00 A 30 A 800 A 00 0 Pre-arcing Time (seconds) 1 0.1 0.01 3 3 0 1 3 00 3 000 3 Symmetrical Current (A) Cut-off Current Characteristics 0 800 A 30 A 00 A 00 A 31 A 0 A 00 A 10 A 1 A 0 A 80 A 3 A Cut-off Current-ka (peak) (asymmetrical Fault Conditions) 1 0.1 0.1 1 8 0 Prospective Current - ka (RMS) Symmetrical 11
Characteristics Curve HRC Fuse-links Type HQ Time-Current Characteristics *3 A 0000 hours 000 A A A A 1 A 0 A A 3 A 0 A 3 A 80 A 0 A 1 A 10 A 00 A 0 A 31 A 00 A 00 A 30 A 00 0 Pre-Arcing Time (Seconds) 1 0.1 0.01 0.00 1 0 00 000 0000 Symmetrical Current (A) 0 Cut-off Current Characteristics 30 00 A 00 31 A 0 A 00 10 A 1 A 0 A 80 A 3 A 0 A *3 A Cut-off Current-ka (peak) (asymmetrical Fault Conditions) 1 3 A A 0 A 1 A A A A A 0.1 0.1 1 0 Prospective Current - ka (RMS) Symmetrical 1
Note
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