aM NH fuse links 500V/690V

NH Knife-blade type aM fuse links for motor protection

These high breaking capacity fuse-links are intended for short circuit protection in motors, transformer and other load with high inrush currents, with rated voltages up to 690V (+5%).

The rated breaking capacity is 80kA at 690V or 120kA at 500V. Excellent protection of switchgear (contactor, thermal switch) due to the good current limiting capability and low I²t values. These fuse links must be associated to an overload device protection (thermal switch). The range comprises fuse-links from size NH000 up to NH4, with rated currents from 6A up to 1250A. Compact versions in low rated currents of every size.

Manufactured with ceramic body with high withstand to internal pressure and thermal shock, that allows a high breaking capacity. Melting elements are silver plated in order to avoid the aging and thus keep unalterable the electric characteristics. Knife contacts are made of silver plated copper or brass.

They are manufactured according to IEC/EN60269 Standards and comply with RoHS directive.

Sizes




U	690V	500V 690V	500V 690V	500V 690V	500V 690V	500V 690V	500V 690V
I_N	6A...40A	50A...160A	6A...200A	63A...250A	125A...400A	315A...630A	400A...1250A
Breaking capacity	80kA	80kA 120kA	80kA 120kA	80kA 120kA	80kA 120kA	80kA 120kA	80kA 120kA

Range

SIZE	U_n (V AC)	I_n (A)	REFERENCE
NH000	690V	6	384010
		10	384015
		16	384020
		20	384025
		25	384030
		32	384035
		35	384040
		40	384045
NH00	690V	50	384050
		63	384055
		80	384060
		100	384065
	500V	125	383070
	500V	160	383075
NH0	690V	6	384110
		10	384115
		16	384120
		20	384125
		25	384130
		32	384135
		35	384140
		40	384145
		50	384150
		63	384155
		80	384160
		100	384165
	500V	125	383170
	500V	160	383175
NH0S	690V	125	384170
	690V	160	384175
	500V	200	383180
NH0S WITH STRIKER	690V	32	398135
		35	398140
		40	398145
		50	398150
		63	398155
		80	398160
		100	398165
		125	398170
		160	398175
	500V	200	397180
NHC1	690V	63	384235
		80	384240
		100	384245

NH1	690V	125	384250
		160	384255
		200	384260
	500V	224	383265
		250	383270

NH1 WITH STRIKER	690V	80	398240
		100	398245
		125	398250
		160	398255
		200	398260
	500V	250	397270
NHC2	690V	125	384340
		160	384345
		200	384350

NH2	690V	224	384355
		250	384360
		315	384370
		355	384375
	500V	400	383380
NH2 WITH STRIKER	690V	125	398340
		160	398345
		200	398350
		250	398360
		315	398370
		355	398375
	500V	400	397380
NHC3	690V	315	384445
		355	384450

NH3	690V	400	384455
		425	384460
		500	384465
	500V	630	383470
NH3 WITH STRIKER	690V	400	398455
		425	398460
		500	398465
	500V	630	397470
NH4	690V	400	384510
		500	384515
		630	384520
		800	384525
	500V	315	383505
		400	383510
		500	383515
		630	383520
		800	383525
		1000	383530
		1250	383535
NH4 WITH STRIKER	690V	400	398510
		500	398515
		630	398520
		800	398525
	500V	315	397505
		400	397510
		500	397515
		630	397520
		800	397525
		1000	397530
		1250	397535

Technical data

Utilization category	aM
Rated voltage	690V AC +5% 500V AC +10%
Rated current	6A...1250A
Rated breaking capacity	690V 80kA 500V 120kA
Rated frequency	42…62Hz
Storage temperature	-40°C ... 90°C
Operating temperature *	-40°C ... 80°C
* For ambient temperatures higher than 25ºC it is necessary to apply a derating in maximum current.

Standards

IEC/EN 60269-1
IEC/EN 60269-2
RoHS Compliant