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Westhomes WCM6E Series 100A 250A 400A 600A Electric Moulded Case MCCB Circuit Breaker

The WCM6E is an electronic trip molded case circuit breaker covering 100A to 600A at 400V AC. Built for main and branch circuit protection in low-voltage distribution systems, it combines a microprocessor trip unit with a high breaking capacity for industrial power networks.

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WCM6E Series 100A–600A Electronic Trip MCCB for Industrial Distribution

The WCM6E series covers current ratings from 100A to 600A at 400V AC, 50/60Hz. Its electronic trip unit provides adjustable protection settings for overload, short-circuit, and ground fault conditions, giving engineers precise control over protection coordination in multi-level distribution systems. The breaker supports both fixed and plug-in mounting, with accessories for shunt trip, undervoltage trip, and auxiliary contacts.

Westhomes ACB and MCCB circuit breaker product series overview

The WCM6E uses a microprocessor-based trip unit that replaces traditional thermal-magnetic elements with programmable protection curves. Overload protection is adjustable from 0.4 to 1.0 times the rated current, and short-circuit protection trip settings can be configured from 2 to 10 times the rated current. This flexibility allows the same breaker frame to serve different protection roles across the distribution hierarchy without changing hardware.

Rated insulation voltage reaches 800V with an impulse withstand of 8000V. The breaker delivers breaking capacities up to 50kA at 400V AC depending on frame size, making it suitable for main switchboards, motor control centers, and power distribution units in factories, commercial buildings, and infrastructure projects.

The WCM6E frame accommodates 3-pole and 4-pole configurations. Available accessories include shunt trip release, undervoltage release, auxiliary switches, alarm contacts, and motor operators for remote control. The breaker can be integrated into SCADA and building management systems through standard communication modules.

Each unit is type-tested to IEC 60947-2. Temperature compensation maintains trip accuracy from -5°C to +40°C ambient. Mechanical endurance exceeds 10,000 operations, and electrical endurance reaches 6,000 cycles at rated current, supporting long service life in continuous-duty applications.

WCM6E 250A MCCB with electronic trip unit, front angle view
WCM6E MCCB terminal connection side view with screw-clamp lugs
WCM6E MCCB technical data and specifications label detail
WCM6E MCCB busbar connection detail showing high current carrying capacity terminals

KEY INFORMATION

WCM6(E)L

Pole  3P,4P
            Voltage  AC400V
            kA  22KA-50KA
            In(A)  16-600A

MAIN TECHNICAL DATA

Item No. In(A) Ue(V) Ui(V) Uimp(kV) Frequency(Hz) Cat Ics(kA) Icu(kA)
WCM6-100S/3300 100 AC 400 1000 8 50 B 22 35
WCM6-250S/3300 250 AC 400 1000 8 50 B 25 50
WCM6-400S/3300 400 AC 400 1000 12 50 B 35 50
WCM6-630S/3300 600 AC 400 1000 12 50 B 35 50

OVERALL AND MOUNTING DIMENSION(MM)

WCM6E 600A MCCB product photo with electronic trip unit detail
WCM6E 100A molded case circuit breaker product photo on white background
WCM6E 100A-600A MCCB series product range overview

FREQUENTLY ASKED QUESTION (FAQ)

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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.

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18 months from the date of receivement

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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.

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Up to the client

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

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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.

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