WSB1-63 3P Miniature Circuit Breaker 10kA 6–80A
With a breaking capacity of up to 10kA, the WSB1-63 3P MCB is built to ensure safety and system integrity in demanding residential, commercial, and industrial environments.
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Explore the CE-certified WSB1-63 3P Miniature Circuit Breaker with 10kA capacity and 6–80A current rating for AC230/400V circuits. Ideal for commercial and industrial applications. Compliant with IEC 60898-1 & GB 10963.1.
With a breaking capacity of up to 10kA, the WSB1-63 3P MCB is built to ensure safety and system integrity in demanding residential, commercial, and industrial environments.

The WSB1-63 3P Miniature Circuit Breaker (MCB) is a high-performance solution designed for three-phase AC circuits operating at 50Hz or 60Hz, with a rated voltage of AC230/400V and a current range from 6A to 80A. This 3-pole MCB provides robust overload and short-circuit protection, as well as reliable manual switching for infrequent operations.
This model is CE certified and fully compliant with international standards GB 10963.1 and IEC 60898-1, meeting global quality and safety requirements.
Key Features:
3P (Triple Pole) Miniature Circuit Breaker
Rated Voltage: AC230/400V
Rated Current: 6A to 80A
Breaking Capacity: 10kA
Frequency: 50Hz / 60Hz
Overload and short-circuit protection
Suitable for infrequent manual operation
CE Certified, compliant with IEC 60898-1 and GB 10963.1
Applications:
Three-phase distribution systems
Commercial office buildings
Residential electrical panels
Industrial and light manufacturing installations
Switchboards and power distribution boxes
| Item No. | WSB1-63 |
| Rated current In(A) | 6, 10, 16, 20, 25, 32, 40, 50, 63 |
| Pole number | 1P, 2P, 3P, 4P |
| Trip characteristics | C type(5-10In); D type(10-20In) |
| Rated insulating voltage Ui(V) | 690 |
| Rated operating voltage Ue(V) | AC230V/AC400V |
| Rated impulse voltage Uimp(kV) | 4 |
| Breaking capacity Icu(kA) | 6 |
| Mechanical life(times) | 20000 |
| Electrical life(times) | 4000 |
| No. | Rated current | Initial state | Test current | Time limit | Expected result |
| 1 | In≤63 | Cold state | 1.13In | t≤1h | Not tripping |
| In>63 | t≤2h | ||||
| 2 | In≤63 | Just followed the last test item | 1.45In | t<1h | Tripping |
| In>63 | t<2h | ||||
| 3 | In≤32 | Cold state | 2.55In | 1s | Tripping |
| In>32 | 1s | ||||
| 4 | Type C | Cold state | 5In | t≤0.1s | Not tripping |
| 10In | t<0.1s | Tripping |
| Package Size | 22.00cm * 8.00cm * 8.00cm |
| Package Gross Weight | 1.500kg |

| Model NO. | WSB1-63 |
| Arc-extinguishing Medium | Air |
| Structure | MCB |
| Type | Circuit Breaker |
| Certification | ISO9001-2000, CE, CB, CCC |
| Voltage | AC230V/400V |
| Production Line | 100% Automatic |
| Trademark | Westhomes |
| Specification | 18mm |
| HS Code | 8536200000 |
| Speed | Normal Type Circuit Breaker |
| Installation | Fixed |
| Poles Number | 1p-4p |
| Function | Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection) |
| Cooperation Type | ODM OEM |
| Rated Current | 1, 2, 3, 5, 6, 10, 16, 20, 25, 32, 40, 50, 63 |
| Transport Package | Paper Box |
| Origin | China |
| Production Capacity | 10000PCS/Week |
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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