Gold Member Since 2015
Audited Supplier
Elecal Electric Appliance Co., Ltd.

Circuit Breaker, Switch, Sm4 manufacturer / supplier in China, offering Sm4 Series Moulded Case Circuit Breakers, H7 Isolating Switch, Zw32-12 Outdoor High Voltage AC Vacuum Circuit Breaker and so on.

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Sm4 Series Moulded Case Circuit Breakers

FOB Price: US $1 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $1/ Piece
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Port: Ningbo, China
Transport Package: Carton
Payment Terms: T/T

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Basic Info
  • Model NO.: SM4
  • Operation: Electric Type
  • Arc-extinguishing Medium: Air
  • Structure: Moulded Case Circuit Breaker
  • Type: Circuit Breaker
  • Trademark: ELECAL
  • Breaking Capacity: High Voltage Circuit Breakers
  • Speed: High-Speed Circuit Breaker
  • Installation: Fixed
  • Poles Number: 4
  • Function: Conventional Circuit Breaker
  • Origin: Wenzhou
Product Description
SM4 series MCCB is applicable circuit of AC 50/60Hz, rated current up to 400A, for distribute energy of electricity & infrequent making & breaking circuit in normal conditions. The products conforms to IEC60947-2. 

2. Specification
Poles number3333
Rated current In(A)25~12525~160125~250125~400
Rated working voltage Ue(V) (50/60Hz)500500600600
Rated working voltage Ue (V)250250250250
Rated insulation voltage Ui~(V)500500690690
Rated impulse voltage Uimp(kV)6688
Utilisation categoryAAAA
Rated limited short-circuit breaking capacity Icu(kA)230/240V~22506070
Rated short-circuit breaking service capacity Ics(%Icu)100100100100
Mechanical life7000700070005000
Electrical life10001001000800
Sm4 Series Moulded Case Circuit Breakers


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