WSB9L‑125 4‑Pole 100/125 A RCCB for EV Charger
Westhomes WSB9L‑125 Series 4‑Pole (3P+N) Earth Leakage Circuit Breaker / RCCB for EV Charger Applications.
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Westhomes WSB9L‑125 RCCB for EV Charger
Rated for 230 V AC, 100 or 125 A with 30 mA residual current trip. Provides earth leakage, overload & short‑circuit protection. Compliant with IEC 61009‑1 and GB/T 16917 standards. Ideal for residential and commercial EV charging.
The WSB9L‑125 series is engineered for electric vehicle charging systems, delivering reliable protection at AC 230 V, with rated currents of 100 A or 125 A and a fixed 30 mA residual operating current (IΔn). It provides safety against electric shock via earth leakage detection, along with overcurrent and short‑circuit protection—while also supporting infrequent manual switching of power lines. Its robust design is ideal for residential, commercial, and industrial EV charger installations.
Key Features:
Precision leakage detection minimizes risk of shock—meets safety codes for EV platforms
Comprehensive protection in one device: earth leakage (ELCB / RCCB), overcurrent, and short-circuit
High-rated current options (100/125 A) support powerful charging stations
Modular DIN‑rail design allows straightforward integration and maintenance
Global compliance with IEC & GB standards ensures reliability across markets
Applications
Designed specifically for electric vehicle charging stations, the WSB9L‑125 delivers vital safety features in EV infrastructure. Its robust performance and international certifications make it ideal for use in residential EV chargers, commercial charge points, hotels, and light industrial sites.
KEY INFORMATION
| Model | WSB9L-125 |
| Current rating(A) | 63,80,100,125 |
| Pole | 1P+N,3P+N |
| Type of instantaneous releaser | C |
| Rated voltage(V) | AC 230V |
| Electrical life(times) | 4000 |
| Mechanical life(times) | 20000 |
Basic Info.
| Model NO. | WSB9L-125 |
| Arc-extinguishing Medium | Air |
| Structure | MCB |
| Type | Circuit Breaker |
| Certification | ISO9001-2000, CE, CB, CCC |
| Production Line | 100% Automatic |
| AMP | 63A, 80A, 100A, 125A |
| Specification | 6, 10, 16, 20, 25, 32, 40, 50, 63, 80 |
| Origin | Chine |
| Production Capacity | 10000PCS/Week |
| Speed | Normal Type Circuit Breaker |
| Installation | DIN Rail |
| Poles Number | 1p+N, 3p+N |
| Function | Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection) |
| Cooperation Type | ODM OEM |
| Company | Factory |
| Transport Package | Paper Box |
| Trademark | Westhomes |
| HS Code | 8536200000 |
155 MBFREQUENTLY ASKED QUESTION (FAQ)
What is the Westhomes WSB9L-125 RCCB for EV chargers?
The Westhomes WSB9L-125 is a residual current protection device designed for electrical systems serving EV charging applications. It detects residual current caused by leakage to earth and disconnects the circuit to help reduce the risk of electric shock and electrical faults. The product is available for residential, commercial, and industrial charging installations.
Is the WSB9L-125 suitable for EV chargers?
Yes. The WSB9L-125 is specifically presented by Westhomes for EV charging systems. Its residual current protection and high-current configurations make it suitable for charging installations where additional circuit protection is required.
What is the rated current range of the WSB9L-125?
The WSB9L-125 product information lists rated current options of 63A, 80A, 100A, and 125A. The appropriate rating should be selected according to the EV charger's rated current, cable capacity, installation conditions, and applicable electrical requirements.
What is the residual current rating of the WSB9L-125?
The EV charger version of the WSB9L-125 is specified with a fixed residual operating current of 30mA (IΔn). This provides sensitive residual-current protection for electrical circuits where protection against earth leakage and electric shock is required.
What pole configurations are available for the WSB9L-125?
The WSB9L-125 is available in 1P+N and 3P+N configurations. The appropriate version depends on whether the EV charging installation uses a single-phase or three-phase supply.
What voltage is the WSB9L-125 designed for?
The EV charger version of the WSB9L-125 is specified for AC 230V applications. When selecting a protection device for an EV charging station, always verify the charger's supply voltage and the electrical system configuration before installation.
Does the WSB9L-125 provide overload and short-circuit protection?
Yes. Westhomes' EV charger product page describes the WSB9L-125 as providing residual-current protection together with overload and short-circuit protection. This integrated protection helps simplify the protection arrangement of an EV charging circuit.
What is the difference between an RCCB and an MCB for EV charging?
An RCCB primarily detects residual current or earth leakage, while an MCB primarily protects against overload and short circuits. For EV charging systems, the required protection arrangement depends on the charger design, installation standard, and local regulations. A device that combines multiple protection functions can simplify the overall circuit protection scheme.
How is the WSB9L-125 installed?
The WSB9L-125 uses a DIN-rail modular design, making it suitable for installation in distribution boards and electrical enclosures. Its modular structure also facilitates wiring, inspection, and maintenance in EV charging installations.
How do I choose the right WSB9L-125 for an EV charger?
When selecting a WSB9L-125, consider the following factors:
Charging system: Single-phase or three-phase
Rated current: 63A, 80A, 100A, or 125A
Residual current protection: 30mA for the EV charger version
Supply voltage: Confirm compatibility with the charging system
Cable capacity: Ensure the protective device is coordinated with the cable
Short-circuit protection: Verify that the device's protection capability is suitable for the installation
Local standards: Follow the electrical installation requirements applicable to the project
Westhomes can provide product selection support according to the EV charger's electrical parameters and installation requirements.
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