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.
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Technical Parameters
Product Description
Standard Certifications IEC60947-2
Item No. ULM3-630
Number of poles 3,4
Electrical characteristics as per IEC60947-2 and EN60947-2
Rated current,In 450,500,550,600,630
Rated Operating Voltage,Ue AC: 415V
Rated Insulated Voltage (Ui) AC: 800V
Rated impulse withstand voltage,Uimp) 8kV
Ultimate breaking capacity
(kA rms Icu)
220/240V 75
380/400V 50
415V 50
550V 20
Rated service breaking capacity
(kA rms Icu)
220/240V 50
380/400V 35
415V 35
550V 13
Protection function Overload, Short-circuit
Type of trip unit Thermal-Magnetic
Magnetic trip range 400A
Utilization category   A
Endurance Mechanical 7000 operations
Electrical 3000 operations
Connection      Front connection
Mounting Standard Screw fixing
Dimensions(mm) Pole
3 257x140x145
4 257x185x145
Note) Depth by door cut size : c1 for large cut, c2 for small cut  

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+86 17357752056

+86 17357752056

gina@ulterior-cn.com

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