NXMH series molded case circuit breaker

Product category:: Molded case circuit breaker
Product code:: P-267
Model:

Function & Use (Application Scenarios)

Distribution appliances and plastic case circuit breaker products are mainly suitable for plastic case circuit breakers. They provide protection for lines and equipment in distribution lines when they are overloaded, short-circuited, or under-voltage. They can also provide overload, short-circuit, and under-voltage protection for infrequent starting of motors.

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Product highlights

Reliable overload protection
Short circuit protection capability
Strong breaking ability
Engineering application adaptation
Stable and reliable operation

Model

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Main Product Parameters

ClassificationswitchgearSecondary classificationMolded case circuit breaker

parametersOperating breaking capacity: Ics=36/50; Ultimate breaking capacity: Icu=50/70Advantages/core features01 Comprehensive functions; it can provide overload long-time delay, short-circuit short-time delay, short-circuit instantaneous and other protections, and also has overload alarm non-trip function to meet various protection needs of customers; 02 Safe and reliable; higher rated insulation voltage and rated impulse withstand voltage make customers safer to use; 03 Flexible and easy to use; universal design of internal accessories reduces customer stocking types and helps customers save inventory

Product details

Function and use

The molded case circuit breaker provides protection for the lines and equipment in the distribution line when overload, short circuit, and under voltage occur. It can also provide overload, short circuit, and under voltage protection for infrequent starting of the motor.

Detailed description

Parameters:
Operating breaking capacity: Ics=36/50
Ultimate breaking capacity: Icu=50/70

Advantages/core functions:
01 Comprehensive functions
Can carry out overload long-delay, short-circuit short-delay, short-circuit instantaneous and other protections, and also has overload alarm non-trip function to meet various customer protection needs
02 Safe and reliable
Higher rated insulation voltage and rated impulse withstand voltage, safer for customers to use
03 Flexible and easy to use
Universal design of internal accessories reduces customer stocking types and helps customers save inventory

Detailed parameters

Parameter classification	Parameter items	Parameter values
System parameters	Rated voltage level In(A)	63, 125, 160, 250, 400, 630, 800, 1000, 1250, 1600
	Rated current (A), 40℃	10,16,20,25,32,40,50,63; 10,16,20,25,32,40,50,63; 63,80,100,125; 63,80,100,125; 125,140,160,180; 125,140,160,180; 250,280,315,320,350,400; 400,500,630; 630,700,800; 800,900,1000; 1000,1250,1600
	Rated insulation voltage Ui (V)	800, 800, 800, 800, 1000, 1000, 1000, 1000, 1000, 1000
	Rated impulse withstand voltage Uimp(kV)	8, 8, 8, 8, 12, 12, 12, 12, 12, 12
	Rated operating voltage Ue(V), AC 50/60Hz	230/240,400/415,500; 230/240,400/415,500; 230/240,400/415,500,690; 230/240,400/415,500,690; 230/240,400/415,500,690; 230/240,400/415,500,690; 230/240,400/415,500,690; 230/240,400/415,500,690; 230/240,400/415,690
	Resolution code	S, H, S, H, S, H, S, H, S, H
	Number of poles	2P, 3P, 4P
	AP	- - - - - - - - - -
	Rated short-circuit breaking capacity Icu (kA)	AC230/240V: 36, 75, 75, 75, 75; AC400/415V: 25, 50, 50, 50, 50; AC500V: - - 25, - -; AC690V: - - - 8, 10
	Rated operating short-circuit breaking capacity Ics (kA)	AC230/240V: 18, 50, 50, 50, 50; AC400/415V: 15, 36, 36, 36, 36; AC500V: - - 15, - -; AC690V: - - 4, 5, 5
	Comply with standards	IEC/EN 60947-2-, GB/T 14048.2
	Use category	A, A, A, A, A, A, A, A, A, A
	Isolating switch (applicable to B/C type products)	■ ■ ■ ■ ■ ■ ■ ■ ■
	Operation method	Up in and out, top in and out, top in and out, top in and out, top in and bottom out, top in and bottom out, top in and bottom out, top in and bottom out, top in and bottom out, Top in and bottom out
	Applicable ambient temperature	-35℃~+70℃, -35℃~+70℃, -35℃~+70℃, -35℃~+70℃, -35℃~+70℃, -35℃~+70℃, -35℃~+70℃, -35℃~+70℃, -35℃~+70℃, -35℃~+70℃
	Arc distance (mm)	≤550, ≤150, ≤50, ≤50, ≤100, ≤100, ≤100, ≤100, ≤100, ≤100
	Mechanical life (times)	Without maintenance: 20000, 20000, 20000, 20000, 10000, 10000, 8000, 5000, 5000, 5000; With maintenance: 40000, 40000, 40000, 40000, 20000, 20000, 20000, 20000, 20000, 20000
	Electrical life (times)	AC415V, In: 10000, 10000, 10000, 10000, 8000, 8000, 5000, 2500, 2500, 2500
Performance indicators	Tripping method and protection type	Electromagnetic tripping: distribution protection, motor protection, Generator protection, generator protection; thermal magnetic tripping: distribution protection, motor protection, generator protection, generator protection
	Accessories	Auxiliary contacts, alarm contacts, shunt releases, undervoltage releases, manual operating mechanisms, terminal blocks, plug-in type, coupling plate, adjacent panel, dedicated for preset zero meters, Overload relay without tripping
	Outline dimensions (mm)	Width (2P/3P/4P): 56/78/103, 56/78/103, 63/90/129, 78/105/140, /-140/185, /-182/240, /-210/280, /-210/280, /-210/280
	High	135, 135, 155, 165, 257, 257, 270, 280, 370, 370
	Deep (S/H type)	71/81, 71/81, 75.5/91, 77/102, 108.5/108.5, 108.5/108.5, 114/114, 118/118, 153/153, 1600A:158/156; <1600A:133/153

Requirement confirmation

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Factory matching

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Order transaction

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Shipment control

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