WSB1-63 4P Miniature Circuit Breaker for AC230/400V
With a high breaking capacity of 6kA or 10kA, the WSB1-63 4P MCB is built to withstand high fault currents, ensuring operational safety in complex multi-phase systems.
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WSB1-63 Series 4P Miniature Circuit Breaker 6kA/10kA 6–63A
Choose the WSB1-63 4P MCB to ensure your electrical systems are protected with international-grade performance and durability.
The WSB1-63 4P Miniature Circuit Breaker (MCB) is specially designed for four-pole AC circuits with a rated voltage of AC230V/400V, operating at 50Hz or 60Hz, and a rated current range of 6A to 63A. This advanced 4-pole MCB ensures reliable short-circuit and overload protection, while also supporting the manual switching of circuits under non-frequent operating conditions.
It is widely used in residential complexes, office buildings, commercial installations, and industrial power distribution systems.
Certified to CE, and meeting both GB 10963.1 and IEC 60898-1 international standards, this miniature circuit breaker combines performance, safety, and global compliance for professional power distribution solutions.
Key Features:
4P (Four Pole) Miniature Circuit Breaker
Rted Voltage: AC230V / 400V
Rated Current: 6A–63A
Breaking Capacity: 6kA / 10kA
Operating Frequency: 50Hz / 60Hz
CE Certified, fully compliant with IEC 60898-1 & GB 10963.1
Provides short-circuit and overload protection
Suitable for manual line switching in infrequent use
Ideal for 3-phase + neutral circuit protection
Applications:
Four-pole residential and industrial distribution boards
Multi-phase commercial power systems
Electrical control panels in office or retail buildings
Light and heavy-duty industrial environments
KEY INFORMATION
| 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 |
Main technical parameters
| 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 |
Packaging & Delivery
| Package Size | 22.00cm * 8.00cm * 8.00cm |
| Package Gross Weight | 1.500kg |
Overall and Mounting Dimension(mm)
Basic Info.
| 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 |
155 MB
FREQUENTLY ASKED QUESTION (FAQ)
About the company
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.
About warranty
18 months from the date of receivement
About shipment method
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.
About MOQ
Up to the client
About payment method
We accept T/T, Paypal, Western union, L/C. Normally 30% payment in advance, 70% before delivery.
About ordering process
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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