Product Overview

The LIVE Electrical RKB125C-030 Type B RCBO is a compact, single-module residual current breaker with overcurrent protection, designed to provide reliable protection for modern electrical systems. It safeguards circuits against overloads, short circuits and earth leakage faults, while supporting advanced applications where DC residual currents may be present.

This Type B RCBO is engineered to detect AC, pulsating DC and smooth DC residual currents, making it suitable for installations where conventional protection devices may not offer adequate safety. Its bi-directional capability ensures secure operation in renewable energy systems and power electronics.

With a C-curve tripping characteristic, this RCBO is ideally suited to circuits with higher inrush currents such as EV chargers, solar PV inverters and heat pumps. Rated at 25A, with 30mA residual current sensitivity and a 6kA breaking capacity, it delivers dependable and compliant protection.

Key Features & Benefits

• Type B RCBO for detection of AC, pulsating DC and smooth DC residual currents
• C-curve tripping suitable for higher inrush current applications
• Compact single-module design to maximise space within consumer units
• Bi-directional supply capability
• Combined protection against overload, short circuit and earth leakage
• 30mA sensitivity for enhanced personal and equipment protection
• Ideal for EV charging equipment, solar PV systems, heat pumps and inductive loads

Technical Specification

• Poles: 1P+N
• Rated Current (In): 25A
• Tripping Curve: C
• Rated Frequency: 50/60Hz
• Rated Operating Voltage: 230/240V~
• Insulation Voltage (Ui): 500V
• Impulse Withstand Voltage (Uimp): 4kV (1.2/50µs)
• Residual Current Sensitivity: 30mA
• Breaking Capacity: 6kA
• Device Type: Type B
• Maximum Terminal Cable Size: 16mm²
• Terminal Torque: 2.0Nm
• Ingress Protection: IP20
• Direction of Supply: Bi-Directional
• Standards: IEC/EN 61009-1, IEC/EN 62423

Downloads

Data Sheet:
Click here to download the RKB Type B single-module RCBO data sheet

LIVE Electrical Catalogue:
Click here to view the LIVE Electrical catalogue