China Supplier 125A 4P Thermal Magnetic Industrial MCCB Moulded Case Circuit Breaker

The CJMM9 series circuit breakers are developed by our company to meet the demands of domestic and international markets. With a maximum rated insulation voltage of 1000V (690V for 125 frame size), these breakers are suitable for AC 50Hz, a rated operating voltage of 400V, and a rated operating current up to 1600A. They are used to distribute electrical power and protect circuits and power equipment from damage caused by overloads, short circuits, undervoltage, and other faults. They can also serve as infrequent starters for motors and provide overload, short-circuit, and undervoltage protection.
Classified by rated ultimate short-circuit breaking capacity into M-type and H-type.
Can be installed vertically (upright mounting) or horizontally (sideways mounting).
Complies with IEC 60947-2 and GB/T 14048.2 standards.

Product Detail

Normal operating altitude below 2000m (above 2000m requires derating and appropriate parameter adjustments);
Normal ambient temperature not exceeding +40°C and not below -5°C (above +40°C or below -5°C requires derating and appropriate parameter adjustments);
Installation category III for the main circuit of the circuit breaker; installation category II for all auxiliary and control circuits;
Relative humidity not exceeding 50% at maximum temperature of +40°C. Higher relative humidity is permissible at lower temperatures. Special measures must be taken to prevent condensation caused by temperature fluctuations;
Pollution degree 3; protection rating IP30;
Installation in non-explosive environments free from gases or conductive dust capable of corroding metals or damaging insulation;
Installation in locations protected from rain and snow.

Model			CJMM9-125M	CJMM9-160M	CJMM9-160H	CJMM9-250M	CJMM9-250H
Shell Frame Class I mn(A)			125	160		250
Number of Poles			1, 2, 3, 4	3, 4
Rated Current In(A)			32, 40, 50, 63, 80, 100, 125	125, 140, 160		160, 180, 200, 225, 250
Rated Operating Voltage Ue(V)			230 (1P, 2P), 400 (3P, 4P)
Rated Insulation Voltage Ui(V)			690	800
Rated Impulse Withstand Voltage Uimp(kV)			6	8
Rated Ultimate Short-Circuit Breaking Capacity Icu(kA)			22	25	50	35	50
Rated Short-Circuit Breaking Capacity Ics(kA)			15	18	35	22	35
Usage Category			A
Operating Cycle Count		Powered	1500	1000		1000
		Non-powered	8500	7000		7000
Trip Unit Type	Thermal Trip		Yes
	Magnetic Trip		Yes
	Thermal-Magnetic Trip		Yes
Installation Wiring Method	Front panel wiring		Yes
	Rear Panel Wiring		Yes
	Plug-in wiring		No	Yes
Internal Accessories	Auxiliary contacts		Yes (1P models only)
	Alarm contact		Yes (1P only)
	Shunt Trip or Undervoltage Trip		Available for 3P and 4P (not available for 1P and 2P)
External Accessories	Electromechanical operating device		Available for 3P and 4P (not available for 1P and 2P)
	Manual operation		Available for 3P and 4P (not available for 1P and 2P)

Model			CJMM9-400M	CJMM9-400H	CJMM9-630M	CJMM9-630H
Frame Rating I mn(A)			400		630
Number of Poles			3, 4
Rated Current In(A)			250, 315, 350, 400		400, 500, 630
Rated Operating Voltage Ue(V)			400
Rated Insulation Voltage Ui(V)			1000
Rated Impulse Withstand Voltage Uimp(kV)			12
Rated Ultimate Short-Circuit Breaking Capacity Icu(kA)			50	65	50	65
Rated operating short-circuit breaking capacity Ics(kA)			35	50	35	50
Number of operating cycles		Power-on	1000		1000
		Non-powered	4000		4000
Trip device type	Thermal trip		Yes
	Single magnetic trip		Yes
	Thermal-magnetic trip		Yes
Installation Wiring Method	Front panel wiring		Yes
	Rear Panel Wiring		Yes
	Plug-in wiring		Yes
Internal accessories	Auxiliary contacts		Yes
	Alarm contact		Yes
	Shunt Trip or		Yes
	Undervoltage Trip Unit
External Accessories	Electric operating device		Available
	Manual		Yes

Model			CJMM9-800M	CJMM9-800H	CJMM9-1600M		CJMM9-1600H
Frame Rating I mn(A)			800		1600
Number of Poles			3, 4
Rated Current In(A)			630, 700, 800		800, 1000, 1250, 1600
Rated Operating Voltage Ue(V)			400
Rated Insulation Voltage Ui(V)			1000
Rated Impulse Withstand Voltage Uimp(kV)			12
Rated Ultimate Short-Circuit Breaking Capacity Icu(kA)			50	65	50		75
Rated operating short-circuit breaking capacity Ics(kA)			35	50	35		66
Number of operating cycles		Power-on	500		500
		Non-powered	2500		2500
Trip Device Type	Thermal trip		Yes
	Single magnetic trip		Yes
	Thermal-magnetic trip		Yes
Installation Wiring Method	Front panel wiring		Yes
	Rear Panel Wiring		Yes
	Plug-in Wiring		Yes			None
Internal Accessories	Auxiliary contacts		Yes
	Alarm contact		None			Yes
	Shunt Trip Unit		Yes
	Undervoltage Trip		None			None
External Accessories	Electric operating device		Yes
	Manual		Yes