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The low voltage moulded case circuit breakers is a 6kA molded case circuit breaker rated up to 63A at 400V AC. Used in low-voltage distribution systems for overload and short-circuit protection, it serves as a main or branch circuit protective device in residential, commercial, and light industrial installations.
The low voltage moulded case circuit breakers is a 6kA molded case circuit breaker rated up to 63A at 400V AC. Used in low-voltage distribution systems for overload and short-circuit protection, it serves as a main or branch circuit protective device in residential, commercial, and light industrial installations.
The low voltage moulded case circuit breakers combines a thermal trip element for overload protection and a magnetic trip element for short-circuit protection in a single compact housing. The thermal mechanism responds to prolonged overcurrent conditions, while the magnetic mechanism provides instant trip response to short-circuit faults. This dual-action design protects downstream equipment and wiring without unnecessary tripping during normal inrush conditions.
Rated for AC 400V operation at 50/60Hz, the breaker delivers a 6kA breaking capacity suitable for typical low-voltage distribution applications. Standard DIN rail mounting on a 35mm profile allows quick installation in distribution boards and control panels. Screw-clamp terminals accept copper or aluminum conductors.
Common applications include residential distribution boards, commercial lighting panels, HVAC control circuits, and light industrial power distribution. Available current ratings range from 6A to 63A, with 1P, 2P, 3P, and 4P pole configurations to match system requirements.
The low voltage moulded case circuit breakers is tested and certified to IEC 60947-2 for low-voltage switchgear and controlgear. Each unit undergoes routine verification for dielectric strength, trip calibration, and mechanical endurance before shipment. The breaker maintains its rated performance across an operating temperature range of -5°C to +40°C, with storage tolerance from -25°C to +70°C, making it suitable for indoor installations in most climate zones.
| Pole | 3P, 4P |
| Voltage | AC400V/690V |
| kA | 20-100 |
| Inm(A) | 63, 100, 225, 400, 630, 800, 1250, 2000(only with 3P) |
| In(A) | 10, 16, 20, 25, 32, 40, 50, 63, 100, 225, 400, 630, 800, 1250, 1400, 1600, 1800, 2000 |
| 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 |
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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