CM3125-4 Moulded Case Circuit Breaker

ULM3(CM3) series of molded case circuit breaker, is our company independent research and development of a household or industrial low-voltage circuit breaker. It conforms to GB/T 14048.2 and IEC 60947-2 standards. ULM3(CM3) molded case circuit breaker has the characteristics of compact structure, full modularization, high break, zero arc and so on. Its rated insulation voltage 800V, suitable for ac 50Hz/60Hz, rated working voltage 690V and below, rated working current to 630A circuit for infrequent conversion and motor infrequent start. Circuit breaker has overload, short circuit and undervoltage protection device, can protect the circuit and power equipment from damage.

Download PDF

Get a Quote

Technical Parameters

Product Description
Standard Certifications		IEC60947-2
Item No.		ULM3-125
Number of poles		1,2,3,4
Electrical characteristics as per IEC60947-2 and EN60947-2
Rated current,In		16-20-25-32-40-50-63-80-100-125
Rated Operating Voltage,Ue		AC: 415V
Rated Insulated Voltage (Ui)		AC: 800V
Rated impulse withstand voltage,Uimp)		8kV
Types		M	H
Ultimate breaking capacity (kA rms Icu）	220/240V	25	38
	380/400V	15	25
	415V	15	25
	550V	10	10
Rated service breaking capacity (kA rms Icu)	220/240V	15	18
	380/400V	7.5	15
	415V	7.5	15
	550V	5	5
Protection function		Overload, Short-circuit
Type of trip unit		Thermal-Magnetic
Magnetic trip range		400A
Utilization category		A
Endurance	Mechanical	10000 operations
	Electrical	4000 operations
Connection	Standard	Front connection
Mounting	Standard	Screw fixing
Dimensions(mm)	Pole
	1	130X25X82
	2	130X50X82
	3	130X75X82
	4	130X100X82
Note) Depth by door cut size : c1 for large cut, c2 for small cut