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The WCM8L-125 Moulded Case Circuit Breaker (MCCB) from Westhomes is a high-performance circuit protection device engineered for AC 400V/690V low-voltage power distribution systems.
With a rated insulation voltage of 800V and operational voltage range up to 690V AC, the WCM8L-125 is designed to support infrequent line switching and motor starting operations in 50Hz AC circuits.
The WCM8L-125 is available in four performance types—Type C (low breaking), L (standard), M (high breaking), and H (very high breaking)—depending on the required short circuit breaking capacity (Icu), providing flexibility for different system requirements. As part of the upgraded WCM8 series, this MCCB is developed using internationally advanced design concepts and manufacturing techniques to ensure exceptional reliability and safety in both commercial and industrial applications.
Its integrated overload, short circuit, and under-voltage protection ensures maximum safety for electrical infrastructure and connected equipment. This MCCB also combines features of an RCCB, offering residual current protection to detect leakage faults and immediately isolate the circuit, enhancing personal safety and preventing potential fire hazards.
Product Advantages:
Wide voltage adaptability for AC 400V and 690V systems
Combines MCCB and RCCB protection in a single compact device
High breaking capacity with zero-flashover design
Durable, compact structure with excellent vibration resistance
Suitable for harsh environments including marine and industrial sectors
Ideal For:
Industrial switchboards and MCC panels
Large-scale equipment protection
Commercial buildings and infrastructure
Maritime electrical systems
Energy and utility distribution networks
| Model | Frame level rated current (A) | Current Rating (A) | Rated operation voltage (V) | Rated insulation voltage (V) | Rated ultimate short circuit breaking capacity (kA) 400V | Rated operation short circuit breaking capacity (kA) 400V |
| WCM8-63L | 63 | (6), 10, 16, 20, 25, 32, 40, 50, 63 | AC400 | AC500 | 25 | 18 |
| WCM8-63M | 50 | 35 | ||||
| WCM8-125C | 100 | (10), 16, 20, 25, 32, 40, 50, 63, 80, 100 | AC690 | AC800 | 20 | 10 |
| WCM8-125L | 35 | 17.5 | ||||
| WCM8-125M | 50 | 35 | ||||
| WCM8-125H | 85 | 50 | ||||
| WCM8-250L | 225 | 100, 125, 140, 160, 180, 200, 225 | AC690 | AC800 | 35 | 18 |
| WCM8-250M | 50 | 35 | ||||
| WCM8-250H | 85 | 50 | ||||
| WCM8-400L | 400 | 225, 250, 315, 350, 400 | AC690 | AC800 | 50 | 25 |
| WCM8-400M | 65 | 42 | ||||
| WCM8-400H | 100 | 65 | ||||
| WCM8-630L | 630 | 400, 500, 630 | AC690 | AC800 | 50 | 25 |
| WCM8-630M | 65 | 42 | ||||
| WCM8-630H | 100 | 65 | ||||
| WCM8-800M | 800 | 630, 700, 800 | AC690 | AC800 | 75 | 50 |
| WCM1-800H | 100 | 65 | ||||
| WCM8-1250 | 800 | 1000, 1250 | AC690 | AC800 | 65 | 40 |
| WCM8-2000 | 1250 | 1400, 1600, 1800, 2000 | AC690 | AC800 | 65 | 40 |
| Description | Specification | ||||||||||||||||||
| Frame level rated current Inm(A) | 63 | 125 | 250 | 400 | 630 | 800 | 1250 | ||||||||||||
| Breaking the capacity level | L | M | C | L | M | H | L | M | H | L | M | H | L | M | H | M | H | ||
| Overall Dimensions (mm)  |
W | 75/103 | 65/93/107 | 74.5/107/142 | 150/198;定140/184 | 182/238 | 210/280 | 210/280 | |||||||||||
| L | 136 | 150 | 165 | 257;定257 | 270 | 280 | 466 | ||||||||||||
| H | 66.5 | 61 | 79 | 81 | 99 | 102;定108 | 105.5 | 107.5 | 139 | ||||||||||
| H1 | 90.5 | 86 | 104 | 110 | 127 | 151.5;定146 | 155 | 155 | 190 | ||||||||||
| Mounting Dimensions (mm)  |
A | 25 | 30 | 35 | 44/90;定44/88 | 58 | 70 | 70 | |||||||||||
| B | 115 | 130.5 | 126 | 194;定215 | 200 | 243 | 300 | ||||||||||||
| Φd | 3.5 | 4.5 | 5 | 7;定6.5 | 7 | 7 | 9.5 | ||||||||||||
| Model NO. | WCM8L-125 |
| Arc-extinguishing Medium | Air |
| Structure | MCCB |
| Type | Circuit Breaker |
| Certification | ISO9001-2000, CE, CB, CCC |
| Factory | Own |
| Payment | L/C, T/T, D/P, Western Union, Paypal, Money Gram |
| Specification | 10A-800A |
| Origin | China |
| Production Capacity | 5000PCS/Week |
| Speed | High-Speed Circuit Breaker |
| Installation | Fixed |
| Poles Number | 3p, 4p |
| Function | Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection) |
| Production Line | 100% Automic |
| Cooperation Type | OEM ODM |
| Transport Package | Paper Box |
| Trademark | Westhomes |
| HS Code | 8536200000 |
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.
18 months from the date of receivement
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.
Up to the client
We accept T/T, Paypal, Western union, L/C. Normally 30% payment in advance, 70% before delivery.
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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