NH fuse-links am 69VAC LOW VOLTAGE IEC FUSES IEC NH FUSE-LINKS FEATURES & BENEFITS Dimensions according to DIN 43 62 parts 1 to 4 Non-isolated gripping lugs Double indicator Lead free contact blades % cadmium APPLICATIONS am: Partial purpose, motor circuit protection The NH system is classified among plug-in fuse systems and is composed of: fuse-base (possibly including terminal covers and phase barriers) fuse-link with blade contact fuse-link replacement device (LV HRC fuse puller) Since the design of this system cannot guarantee non-interchangeability of rated current it must be handled by a qualified professional. Type am NH fuse-links are partial-range breaking capacity fuse-links, used to protect motor circuits as they are strongly current-limiting and have low power losses. They interrupt currents from 6.3 times In up to their maximum breaking capacity and are therefore suited for short-circuit protection only. They must be associated with other switchgear for protection against overloads. These fuse-links can have a rated current equal to the motor s nominal current. TECHNICAL DATA OVERVIEW Voltage AC 69 VAC Ampere Range (A) 4... 1 A Size per Standard 4, 4a Speed/Characteristic am I.R. AC 12 ka Body Material ceramic Contact Materials copper, silver-plated STANDARDS VDE 636 Part 21 IEC 6269-1 and -2 Low Voltage IEC Fuses / DS-LFBCA64-3-616_EN EP.MERSEN.COM 1
PRODUCT RANGE Size 4 Catalog Reference Rated voltage AC (IEC) Rated current In Power dissipation at In Weight Package NH4AM69V4-8 NH4AM69V4-8 Q22799 69 V 4 A 26 W 2.2 kg 1 NH4AM69V5-8 R227991 69 V 5 A 38 W 2 kg 1 NH4AM69V63-8 S227992 69 V 63 A 5 W 2.2 kg 1 NH4AM69V8-8 T227993 69 V 8 A 65 W 1.75 kg 1 NH4AM69V1-8 V227994 69 V 1 A 8 W 2.2 kg 1 Size 4a Catalog Reference Rated voltage AC (IEC) Rated current In Power dissipation at In Weight Package NH4AAM69V5-8 NH4AAM69V5-8 X227996 69 V 5 A 38 W 2.2 kg 1 NH4AAM69V63-8 Y227997 69 V 63 A 5 W 2.2 kg 1 NH4AAM69V8-8 A227999 69 V 8 A 65 W 2.2 kg 1 NH4AAM69V1-8 B228 69 V 1 A 8 W 2.2 kg 1 TECHNICAL DATA Size 4 Size 4a Rated current 4... 1 A 5... 1 A Rated breaking capacity AC 12 ka 12 ka Rated voltage AC 69 V 69 V Indication System top indicator top indicator Width 1 mm 1 mm Low Voltage IEC Fuses / DS-LFBCA64-3-616_EN EP.MERSEN.COM 2
TIME CURRENT CHARACTERISTIC CURVES Size 4, 4-1A Size 4a, 5-1A Pre-arcing time (s) 1 7 5 3 2 1 7 5 3 2 1.7.5.3.2.1.7.5.3.2.1.7.5.3.2 4 A 5 A 63 A 8 A 1 A.1.7.5.3.2.1 1 2 3 5 7 1 2 3 5 7 1 RMS value of prospective current (A) +/- 8% 2 Low Voltage IEC Fuses / DS-LFBCA64-3-616_EN EP.MERSEN.COM 3
CUT-OFF CURRENT CHARACTERISTIC Size 4, 4-1A Size 4a, 5-1A 1 7 5 lm= 2.3 lp 1 A 8 A 3 63 A Maximum peak let thru current Ic (A) 2 1 1 2 5 A 4 A 3 5 7 1 2 3 5 7 1 2 3 5 7 5 Hz RMS symmetrical prospective current Ip (A) 1e+6 PRE-ARCING AND OPERATING I2T CHARACTERISTICS Size 4, 4-1A Size 4a, 5-1A Pre-arcing and operating I²t (A²s) 2 1 7 5 3 2 1 7 5 3 2 1 69V 4V pre-arcing I²t Rated current (A) 4 5 63 8 1 Low Voltage IEC Fuses / DS-LFBCA64-3-616_EN EP.MERSEN.COM 4
DIMENSIONS Size 4 with top indicator Indicator lever visible when the fuse has blown 68.5 ±1.4 62.5 ±1.4 22 1 6 (9) 32 ±.4 5 ±.2 87 1 ± 1.8 1 3 16 ±.4 16 ±.4 2 3.6 (79.5) 3.6 1 ±1.8 +2 149.5-1.6 8 ±.1 +2 199.5-1.6 Dimensions in mm Low Voltage IEC Fuses / DS-LFBCA64-3-616_EN EP.MERSEN.COM 5
DIMENSIONS Size 4a with top indicator Indicator lever visible when the fuse has blown 3 1 -.3 (51) 1 -.3 6 -.3 3 -.3 9 28.5 83 ± 1.4 91 ± 1.4 (51) 19-4 85 1-4 6 ±.1 Dimensions in mm 5 ±.2 +1 2-2.4 Low Voltage IEC Fuses / DS-LFBCA64-3-616_EN EP.MERSEN.COM 6