Zhejiang, China
Business Type:
Number of Employees:
Year of Establishment:
Management System Certification:
ISO9001:2015, ISO14001:2015, OHSAS18001:2007
Average Lead Time:
Peak season lead time: within 15 workdays
Off season lead time: within 15 workdays
OEM/ODM Service
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Moulded Case Circuit Breaker, Electronic Circuit Breaker, MCCB manufacturer / supplier in China, offering Moulded Case Circuit Breaker Electronic Type 50/60Hz 400V High Breaking 2/3/4 Poles (WCM4E) MCCB, Tsm-F Distribution Box Transparent Cover (IP40) 3 4 6 8 10 12 Ways, Single Phase Current Meter Three Phase Current Meter Single Phase Voltage Meter Three Voltage Meter a/V/Hz Combination LCD Multifunction and so on.

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Moulded Case Circuit Breaker Electronic Type 50/60Hz 400V High Breaking 2/3/4 Poles (WCM4E) MCCB

Get Latest Price
Min. Order / Reference FOB Price
1 Box US $39.08-121.08/ Box
Port: Ningbo, China
Production Capacity: 15, 000, 000
Payment Terms: L/C, T/T, D/P, Western Union, Paypal, Money Gram
Breaking Capacity: Low Voltage Circuit Breakers
Operation: Electric Type
Speed: High-Speed Circuit Breaker
Arc-extinguishing Medium: Air
Installation: Fixed
Structure: MCCB

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Basic Info

Model NO.
Poles Number
2, 3, 4
Circuit Breaker
Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection)
ISO9001-2000, CE, CCC
100, 250, 400, 630, 800, 1600
15-1600 (Adjustable)
Transport Package
Paper Box
IEC/EN 60947-2
HS Code
Moulded Case Circuit Breaker Electronic Type 50/60Hz 400V High Breaking 2/3/4 Poles (WCM4E) MCCB

Key Information

Pole: 3P
Voltage: AC400
kA: 35-125kA
Inm(A): 100, 250, 400, 630, 800, 1600
In(A): 15-1600 (adjustable)


WCM4(E) series moulded case circuit breaker (MCCB for short) is one of new type circuit breaker developed based on international advanced technology. The related insulation voltage is 1000V, applied to circuit of AC50Hz  or (60Hz), rated operation voltage 400V and below, rated operation current from 15A to 1600A for distributing electric energy. It is used for infrequent closing and breaking under normal circumstance to make protection at overload, under-voltage at lines and equipments. The circuit breaker of frame size rated current under 400A can also protect the squirrel-cage motor of infrequent start, breaking at running, overload, short circuit and under-voltage.
The product meets standards of GB 14048.2 and IEC 60947-2.

Main technical parameters
Frame size breaking gradeRated operation short circuit breaking capacity (kA)Rated ultimate short circuit breaking capacity Ics (kA)Flashover distance (mm)Rated service voltage (V)Rated service frequency (Hz)Instantaneous setting multipleCurrent rating (A)
Power distributionMotor protection
100S22350AC40050/6010In12In15, 20, 25, 32, 40, 50, 63, 80, 100
250S2550100, 125, 160, 180, 200, 225, 250
400S3550250, 300, 350, 400
630S3550400, 500, 630
800/16006585800, 1250, 1600
Current rating of tripper (A)Thermal tripper (environment temperature +40ºC)Action current of electromagnetic tripper (A)Remarks
1.05In (cold) non-action time (h)1.30In (thermal) non-action time (h)
63≤In≤100≥2≥210In×(1±20%)Power distribution
10≤In≤4001.0In (cold) non-action time (h)1.20In (thermal) non-action time (h)12In×(1±20%)Power distribution

Attached catalogue

Moulded Case Circuit Breaker Electronic Type 50/60Hz 400V High Breaking 2/3/4 Poles (WCM4E) MCCB

Product Range
Miniature Circuit Breaker (MCB)Upto 125A, 10kA, Curve type: A, B, C, D, 1P, 2P, 3P, 4P
Miniature Earth Leakage Circuit Breaker (MCB) (RCBO)Upto 125A, 10kA, 0.3mA, Curve type: A, B, C, D, 1P, 2P, 3P, 4P
Moulded Case Circuit Breaker (MCCB)Upto 2000A (adjustable), 100kA, 1P, 2P, 3P, 4P
Moulded Case Earth Leakage Circuit Breaker (ELCB) (RCCB)Upto 2000A (adjustable), 100kA, 1000mA, 1P, 2P, 3P, 4P
Universal Circuit Breaker (ACB)Upto 6300A, 100kA,
Switch DisconnectorUpto 125A, 1P, 2P, 3P, 4P
Surge ArrestorUp 2.2/2.8kV, 100kA
Double Power Supplies Automatic Changeover SwitchUpto 2000A, 7.5kA, 1P, 2P, 3P, 4P
Load Switch DisconnectorUpto 3200A, 10kA, 70kA,
Distribution Box / EnclosurePlastic / Metal
Spare Parts 

Frequently Asked Question (FAQ)
Q:  About the company
A: Westhomes® is a professional manufacturer for low voltage and high voltage electrical products with a thirty-year history.
    Main supplier of state-owned companies like China Stae Grid, China Southern Power Grid through bidding with bunches of test certificates, sales records and operation performance to support.
    Enough investment for research and development for the products innovation.

Q:  About Warranty
 A: 18 months from the date of receivement

Q: About shipment method
A: Depends on the required quantity and delivery urgency, both international express like UPS / DHL / EMS / HK EMS / FedEx / TNT (door to door service) and normal sea shipping & air freight also avaliable.

Q: About MOQ
A: Upto the client

Q: About payment method
A: We accept T/T, Paypal, Western union, L/C. Normally 30% payment in advance, 70% before delivery.

Q:About ordering process
A: First to send an inquiry via made-in-china platform or directly to the contact e-mail address. All the following thing is the communication between us.

Ms Stephanie Huang
Senior Sales Manager
Add: Liushi Town, Yueqing City, Zhejiang Provine, China 325604
Mob: 0086-13868328363

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