Hot Selling 250A 3P Key-equipped MCCB Air Circuit Breaker for Safe Electrical Distribution

CJMM3 series Moulded Case Circuit Breakers, in low-voltage distribution lines, can connect, carry and break current under normal circuit conditions, and can also connect, carry and break current under speciﬁed abnormal circuits for a certain period of time. A mechanical switch that protects lines and equipment when overload, short circuit, or undervoltage occur on distribution lines (accessory function). It is widely used in low-voltage power consumption places such as electric power, construction, industry, and OEM.

Product Detail

Structural Characteristics

Frame grade: 125A, 160A, 250A, 400A, 630A
Rated working voltage Ue: 400/415V, 690V
Breaking capacity: Covers commonly used breaks in the power distribution ﬁeld: 20kA, 36kA, 50kA, 70kA, 75kA (see the parameter table for speciﬁc breaking of each frame)
Number of poles: including 2-pole, 3-pole and 4-pole products
Release type: single magnetic type, thermal magnetic type
Installation method: ﬁxed, plug-in, drawer

Normal working conditions: -5~40°C For -40°C ~-5°C, 40°C ~70°C, please contact us.
If the working environment temperature exceeds 40°C, please refer to the temperature derating coeﬃcient table for use;
Storage temperature: -40~70°C (If the storage temperature is lower than normal working conditions, the product should be returned to working conditions and left to stand for at least 24 hours before being put into use); Normal operating humidity:
When the ambient air humidity is +40°C, the relative humidity of the atmosphere cannot exceed 50%; if the temperature is lower, it can be used under higher relative humidity conditions;
For example: at +20°C, it reaches 90%.

Type			CJMM3-125		CJMM3-160		CJMM3-250		CJMM3-400/630
No. of Poles			3P
Rated Current	In (A)		16/20/25/32/40/50/63/80/100/125		50/63/80/100/125/140/160		125/140/ 160/180/200 225/250		225/250/315/350/400 500/630
Impulse Withstand Voltage	Uimp (kV)		8						10
Rated Operational Voltage	Ue (V AC)		400V/415V/690V
Rated Insulation Voltage	Ui (V AC)		800						1000
Operational Frequency (Hz)			50/60Hz
Utilisation Category			A
Reference Temperature			-5~+40°C
Operating Temperature			-5~+40°C
Standard			IEC60947-1/IEC60947-2
Short circuit breaking capacity level			L	H	L	H	L	H	L	H
Rated ultimate short-circuit breaking capacity (kA)	AC230/240V	1P+N,2P	36	75	50	75	50	75	/	/
	AC400/415V	2P,3P,4P	25	50	36	50	36	50	50	70
	AC690V	3P,4P	/	/	8	10	8	10	10	15
Rated operating short-circuit breaking capacity (kA)	AC230/240V	1P+N,2P	18	50	30	50	30	50	/	/
	AC400/415V	2P,3P,4P	15	36	20	36	20	36	36	50
	AC690V	3P,4P	/	/	4	5	4	5	7,5	10
Electrical Life			5000						3000
IP Prolection (from front side)			IP40
Pollution Degree			III
Type of Release			Single magnetic trip/thermal magnetic trip
Width (3 Pole) (mm)			75		90		107		150
Height (mm)			130		155		165		257
Depth (mm)			66		73		67,5		114