NXM series plastic case circuit breaker

Product category:: Molded case circuit breaker
Product code:: P-271
Model:: NXM

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

NXM

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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 purpose

The molded case circuit breaker provides protection for the lines and equipment in the distribution line when overload, short circuit, and undervoltage occur. It can also provide overload, short circuit, and undervoltage 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 grade rated current Iin(A)	63, 125, 160(W25), 250, 400, 630, 800(W630), 1000(W800), 1250, 1500
	Rated current (An), 40℃	10,16,20,25,32,40,50,63; 10,16,20,25,32,40,50,63,125; 160,25,32,40,50,63,80,100,160; W125,25,32,40,50,63,80,100,125; 125,140,160,180,200,225,250; 250,280,315,320,350,400; 400,500,630; 800,630,700,800,W630,630; 1000,600,900,1000,1000,800,900,800; 1000,1250; 1000,1250,1600
	Rated ultimate 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 Uimp (V), AC 50/60Hz	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; 230/240,400/415,500,690; 230/240,400/415,500,690
	Breaking capacity code	S, H, H, H, S, H, S, H, S, H
	Number of poles	2P, 3P, 4P
	Rated ultimate short-circuit breaking capacity Icu(kA)	AC230/240V: 36, 75, 36, 75, 50, 75; AC400/415V: 25, 50, 25, 50, 36, 36; AC500V: 25, -, 25, -, 30, 30; AC690V: 8, 10, 8, 10, 10, 10
	Rated operating short-circuit breaking capacity Ics (kA)	AC230/240V: 18, 50, 18, 50, 30, 50; AC400/415V: 15, 36, 15, 36, 36, 36; AC500V: 15, 36, 15, 36, 36, 36; AC690V: 7.5, 10, 7.5, 10, 13, 15, 12.5, 20, 20
	Compliant with standards	IEC/EN 60947-2, GB/T 14048.2; IEC/EN 60947-2, GB/T 14048.2
	Usage Category	A, A, A, A, A, A, A, A, A, A
	Isolation function (applicable to B, C type products)	■, ■, ■, ■, ■, ■, ■, ■, ■, ■
	Wiring method	Top in and bottom out, Top in and bottom out
	Applicable working temperature	-35℃~70℃, -35℃~70℃
	Arc distance (mm)	≤50, ≤50, ≤50, ≤50, ≤100, ≤100, ≤100, ≤100, ≤100, ≤100
	Machine capacity (times)	Maintenance-free and maintenance-free: 20000, 20000, 20000, 20000, 10000, 8000, 5000, 5000, 5000, 5000; 40000, 40000, 40000, 40000, 10000, 10000, 10000, 10000, 10000, 10000; 10000, 10000, 10000, 10000, 8000, 5000, 2500, 2500, 2500, 2500
	Electrical life (times)	AC415V, In: 10000, 10000, 10000, 10000, 8000, 5000, 2500, 2500, 2500, 2500
Performance indicators	Connector mode and protection type	Electric connection tripping: distribution protection, motor protection, generator protection; anti-connection tripping: distribution protection, motor protection, Generator protection
	Accessories	Auxiliary contacts, alarm contacts, separation releases, undervoltage releases, manual operating mechanisms, electric operating mechanisms, behind-the-board wiring, plug-in, interlocking, phase partitions, dedicated for prepayment meters, overload alarm does not trip

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