RCD Type B 100A EV Charger Breaker

Description

RCD Type B 100A EV Charger Breaker for High-Power EV Charging
A Type B Residual Current Device (RCD) with a 100A rating is a heavy-duty safety switch designed for high-capacity electrical installations. It is specifically required for three-phase EV charging stations (up to 22kW and beyond) and industrial power systems where complex DC components are present.
A Type B Residual Current Device (RCD) is a critical safety component specifically designed for modern electrical loads, particularly Electric Vehicle (EV) charging systems. While standard RCDs (Type AC or Type A) protect against common AC leakages, Type B RCDs provide comprehensive protection by detecting smooth DC residual currents.
Core Capabilities
• High Current Capacity: Rated at 100A, making it suitable for high-power commercial or residential chargers that require a larger safety margin.
• Universal Leakage Detection: Unlike standard breakers, Type B can detect:
• AC residual currents.
• Pulsating DC residual currents.
• Smooth DC residual currents (the primary requirement for EV safety).
• DC Blindness Prevention: It ensures the breaker remains functional even when smooth DC leakage is present, which would normally “paralyze” a standard Type A RCD.

Key Features and Specifications
Current Rating: 100A (Ideal for standard 40kW to 65kW AC EV chargers and DC EV Chargers) and Input Power side of DC Fast Chargers.
Leakage Detection: Detects AC, pulsating DC, and smooth DC residual currents.
Sensitivity: Typically 30mA for life safety and fire protection.
Standards Compliance: Manufactured according to IEC/EN 62423 (Type B requirements) and IEC/EN 61008-1.

Why 100A RCD for EV Chargers?
While a 40A breaker is common for 7kW or 11kW chargers, a 63A RCD is the professional choice for:
22kW Charging Stations: These chargers pull roughly 32A per phase; a 100A RCD provides a robust overhead to prevent nuisance tripping and heat buildup.
Dual-Charging Units: Ideal for pedestals or Wallboxes designed to charge two vehicles simultaneously.
Industrial Integration: Used in environments where the EV charger shares a sub-panel with other high-frequency equipment like VFDs (Variable Frequency Drives) or large PV inverters.
Safety Importance
The Type B characteristic is mandatory in many regions (such as under BS 7671 or IEC 60364-7-722 standards) unless the EV charger itself includes built-in 6mA DC leakage detection. Using a 100A Type B RCD ensures the entire installation remains compliant and safe against all possible electrical fault types.
Why Type B is Essential for EV Charging
Modern EV on-board chargers can produce smooth DC leakage during the rectification process. Standard Type A RCDs are not designed to detect this and can even become “blinded” (saturated) by DC current, failing to trip during a genuine fault.
The Type B RCD prevents this by:
DC Fault Protection: Ensuring the circuit breaks if DC leakage exceeds 6mA (as per IEC 61851-1).
High Frequency Detection: Monitoring leakages at frequencies up to 1kHz or higher, common in EV power electronics.
Comprehensive Safety: Providing the highest level of protection for humans and infrastructure.

Technical Parameter

Common Application
In a typical home installation, a 100A Type B RCD acts as the primary protection for a Wallbox AC Chargers and DC Chargers for Electric Vehicles. It ensures that even if the car’s internal insulation fails, the power is cut instantly, preventing electric shock or damage to the household electrical system.

Best Plus Energy EV Charger – Reliable & Smart Charging Solution
Best Plus Energy, a more than 8 years AC and DC Electric Vehicle Charging Stations manufacturer, offers a Wall Box EV chargers designed for residential, commercial, and Standalone public charging stations for Electric Vehicle Charing Markets.
With universal compatibility, our EV Cargers support DC Fast Charging Standard CCS1 and CCS2, CHAdeMO, and GB/T, ensuring seamless charging for global EV models. Featuring OCPP integration, RFID authentication, and remote app control, it enhances user convenience and security. Its compact, space-saving design optimizes installation in parking lots, garages, and fleet operations. Built-in safety protections against overvoltage, overcurrent, and short circuits ensure reliable performance. Best Plus Energy provides OEM & ODM solutions, catering to EV charger distributors, wholesalers, and fleet operators worldwide. Join to Best Plus Energy to power the future EVs.
Contact Email: info@bestplusenergy.com