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WSB9L-125 RCBO offers 6kA breaking capacity, 400V overvoltage protection, and 30mA-500mA earth leakage options. Ideal for industrial & household use, available in 3P+N/4P.
WSB9L-125 RCBO offers 6kA breaking capacity, 400V overvoltage protection, and 30mA-500mA earth leakage options. Ideal for industrial & household use, available in 3P+N/4P.
WSB9L-125 RCBO combines leakage, overload, short-circuit & overvoltage protection in one. 6kA breaking capacity, 400V rated, 30mA-500mA options. Reliable safety for industrial & home use.
Key Features：
All-in-One Protection: Integrates Residual Current (Earth Leakage), Overload (Thermal), Short-Circuit (Magnetic), and Overvoltage protection into a single compact unit.
High Breaking Capacity: Offers a robust 6kA short-circuit breaking capacity, ensuring reliable disconnection during high fault currents in industrial environments.
Wide Voltage Application: Rated for up to 400V AC, making it suitable for standard single-phase and three-phase power distribution systems.
Flexible Sensitivity: Available in multiple residual current sensitivities (30mA, 100mA, 300mA, 500mA) to suit different safety requirements, from personnel protection to fire prevention.
Applications:
Industrial Power Distribution
Commercial Buildings
Residential Electrical Panels
Fire Prevention Systems
| Type | MCB, AC MCB, RCBO |
| BCD Curve | B, C, D |
| Rated Frequency (Hz) | 50hz/60hz |
| Material | Copper |
| Application | Circuit-Breaking, Industrial, Households, Protection, Electric Power |
| Model Number | WSB9L-125 |
| Rated Voltage | 400 V, 220V/230V |
| Breaking Capacity | 6 kA |
| Mounting Type | Rail Mounting |
| Protection | LSI |
| Place of Origin | Zhejiang, China |
| Brand Name | Westhomes |
| Selling Units | Single item |
| Quantity (pieces) | 1 – 1,000 | > 1,000 |
| Lead time (days) | 15 | To be negotiated |
For a closer look at residual current, read WSB5L Series 1P+N RCCB Residual Current Circuit Breaker.
Westhomes WSB9L-125 is a residual current circuit breaker designed with multiple protection functions, including residual current protection, overload protection, short-circuit protection, and overvoltage protection.
It provides comprehensive electrical safety protection for low-voltage distribution systems and is suitable for residential, commercial, and industrial applications.
WSB9L-125 integrates several protection functions into one device:
Residual current leakage protection
Overload protection
Short-circuit protection
Overvoltage protection
This integrated design reduces installation space and improves the safety level of electrical systems.
The WSB9L-125 series supports high-current applications with rated current options such as 100A and 125A.
It is designed for distribution systems requiring higher current capacity and reliable residual current protection.
The overvoltage protection function continuously monitors the supply voltage.
When abnormal voltage exceeds the preset safety range, the device disconnects the circuit automatically to protect connected electrical equipment from damage caused by voltage fluctuations.
A standard RCCB mainly provides residual current protection and requires an additional MCB for overload and short-circuit protection.
WSB9L-125 combines residual current protection with additional protective functions, providing a more complete solution in a single device.
Yes.
WSB9L-125 is suitable for EV charging applications where reliable leakage protection and overcurrent protection are required.
Its high current rating and integrated protection functions make it an ideal choice for residential and commercial EV charging installations.
WSB9L-125 is available in configurations such as:
1P+N
3P+N
These configurations allow flexible installation in different electrical distribution systems.
The main difference is the protection combination.
RCBO combines residual current protection and overcurrent protection.
RCCB focuses mainly on leakage protection and requires a separate overcurrent protection device.
The correct selection depends on the protection requirements of the electrical system.
WSB9L-125 is commonly installed in:
Residential distribution boxes
Commercial electrical panels
EV charging stations
Industrial low-voltage systems
Power distribution cabinets
Its DIN rail mounting design makes installation convenient and efficient.
Westhomes WSB9L-125 provides an integrated protection solution by combining residual current protection, overload protection, short-circuit protection, and overvoltage protection.
With reliable performance, compact design, and flexible applications, it helps improve electrical safety and system reliability.
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