NXMHLE series residual current operated circuit breaker

Product category:: Residual Current Circuit Breaker (RCCB)
Product code:: P-286
Model:: NXMHLE

Function & Use (Application Scenarios)

Distribution appliances and residual current action circuit breaker products are mainly suitable for the series of residual current action circuit breakers. Their main functions are to provide indirect contact protection against fatal personal electric shock and to provide protection against electrical fires caused by ground fault current, such as insulation damage, etc. And to the line

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Product highlights

Reliable overload protection
Short circuit protection capability
Leakage protection support
Strong breaking ability
Easy to install and maintain

Model

NXMHLE

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Main Product Parameters

ClassificationswitchgearSecondary classificationResidual current operated circuit breaker

parametersOperating breaking capacity: Ics=25/36/50; ultimate breaking capacity: Icu=36/50/70Advantages/core features01 Comprehensive functions; can carry out leakage protection, overload long delay, short circuit short delay, short circuit instantaneous and other protection to meet various protection needs of customers; 02 Safe and reliable; double protection design of upper cover and middle cover allows customers to use it in various complex environments; 03 Compact and convenient; the product is smaller than competing products, easy to layout and saves installation space

Product details

Function and purpose

The main function of the residual current operated circuit breaker series is to provide indirect contact protection against fatal personal electric shock, and to provide protection against electrical fires caused by ground fault current, such as insulation damage, etc. It also provides protection against overload, short circuit and under-voltage of the line, and can also be used for infrequent switching of the line.

Detailed description

Parameters:
Operating breaking capacity: Ics=25/36/50
Ultimate breaking capacity: Icu=36/50/70

Advantages/core functions:
01 Comprehensive functions
Can carry out leakage protection, overload long delay, short circuit short delay, short circuit instantaneous and other protection to meet customers' various protection needs
02 Safe and reliable
Double protection design of upper cover and middle cover, customers can use it in various complex environments
03 Compact and convenient
The product is smaller than competing products, making it easy to layout and save installation space

Detailed parameters

Parameter classification	Parameter items	Parameter values
System Parameters	Rated insulation voltage Ue (V)	800
	Rated impulse withstand voltage Uimp (kV)	8
	Operating frequency (Hz)	AC 50/60Hz
	Rated current In(A)	125, 160, 250, 400, 630
	Rated short-time withstand current Icw (4s), 40℃	10.16, 20.25, 32.50, 40.50, 61.100, 100.125, 125.160, 180.200, 225.250, 250.280, 315.320, 350.350, 380.400, 400.400, 600.600
	Rated peak withstand current Ipk (kA)	25, 32, 40, 50, 61, 100, 125, 160, 180, 200, 225, 250, 280, 315, 320, 350, 350, 380, 400, 400, 600, 600
	Rated short-circuit breaking current Icu (kA)	40k/415, 40k/415, 40k/415, 40k/415, 40k/415
	Rated short-circuit making current Icm (kA)	40k/415, 40k/415, 40k/415, 40k/415, 40k/415
	Rated operating sequence	A: 30.50.100.200, B: 90.100.200.300, C: 100.200.300.500, D: 100.200.300.500, E: 90.100.200.300
	Rated operating current Ie(A)	Adjustable, instantaneous type
	Rated thermal stable current Ith (4s)	AC type, A Type: 30.50.100.200, B: 90.100.200.300, C: 100.200.300.500, D: 100.200.300.500, E: 90.100.200.300
	Rated dynamic stable current Idyn (kA)	Adjustable, time-delay type
	Rated short-time withstand current Icw (2s)	≤0.04, ≤0.04, ≤0.04, ≤0.04, ≤0.04
	Rated short-time withstand current Icw (2s) Maximum inactive time (T)	0.1, 0.1/0.3, optional, 0.1/0.3, optional, 0.3/0.5, optional, 0.3/0.5, Optional, 0.3/0.5, optional
	Rated 20mΩ maximum breaking time (t)	0.3, 0.3, 0.3, 0.3, 0.3
Performance index	Breaking capacity code	S, H, H, H, H
	Number of poles	SP, SP+N, SP+P, SP+P, SP+P
	Rated control and auxiliary circuit current Icc(A)	25, 36, 35, 50, 35, 50, 70, 50, 70
	Rated control and auxiliary circuit connection capacity Icc(A)	13, 18, 18, 25, 18, 25, 25, 36, 36
	Rated control and auxiliary circuit breaking capacity Icc(A)	13, 18, 18, 25, 18, 25, 25, 36, 36
	Rated control and auxiliary circuit connection capacity Icc(A)	IEC/EN 60947-4-2, GB/T 14048.2, IEC/EN 60947-4-2, GB/T 14048.2
	Usage category	* , * , * , * , A
	Rated functional current (applicable to type C products)	* , * , * , * , A
	Applicable working environment temperature	-25℃～+70℃, -25℃～+70℃, -25℃～+70℃, -25℃～+70℃, -25℃～+70℃
	Arc distance	≤50, ≤50, ≤50, ≤50, ≤100
	Mechanical life (times)	No maintenance: 20000, with maintenance: 40000, without maintenance: 10000, with maintenance: 20000, without maintenance: 20000, with maintenance: 40000, without maintenance: 10000, with maintenance: 20000, without maintenance: 8000, with maintenance: 16000
	Electrical life (times)	AC415V, % 10000, 10000, 10000, 10000, 10000
	Accessories	Auxiliary contacts (1 normally open, 1 normally closed) * , * , * , * , *
		Auxiliary contacts (P open 2 P closed 2) - , - , - , - , -
		Auxiliary contact (P open 2 P closed 2) - , - , - , - , -
		Auxiliary contact (P open 2 P closed 2) - , - , - , - , -
		Auxiliary contact (P open 2 P closed 2) - , - , - , - , -
		Auxiliary contact (P open 2 P closed 2) - , - , - , - , -
		Auxiliary contact (P open 2 P closed 2) - , - , - , - , -
		Auxiliary contact (P open 2 P closed 2) - , - , - , - , -
		Auxiliary contact (P open 2 P closed 2) - , - , - , - , -
		Auxiliary contact (P open 2 P closed 2) - , - , - , - , -
		Auxiliary contact (P open 2 P closed 2) - , - , - , - , -
		Auxiliary contact (P open 2 P closed 2) - , - , - , - , -
		Auxiliary contact (P open 2 P closed 2) - , - , - , - , -
		Auxiliary contact (P open 2 P closed 2) - , - , - , - , -

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