Product Overview

The LIVE Electrical RKB140B-030 Type B RCBO is a high-capacity, single-module residual current breaker with overcurrent protection, engineered to deliver advanced circuit safety in demanding electrical installations. It provides effective protection against overloads, short circuits and earth leakage faults, while supporting applications where DC residual currents may be present.

This Type B RCBO is specifically designed to detect AC, pulsating DC and smooth DC residual currents, ensuring compliance with modern electrical safety requirements. Its bi-directional capability makes it ideally suited to renewable energy systems and power electronics where current flow can occur in either direction.

With a rated current of 40A, a 30mA residual current sensitivity and a 6kA breaking capacity, the RKB140B-030 is an excellent choice for protecting high-load circuits such as EV charging installations, solar PV inverters, heat pumps and other advanced electrical equipment.

Key Features & Benefits

• Type B RCBO for advanced detection of AC and DC residual currents
• Compact single-module design for efficient use of consumer unit space
• Bi-directional power flow capability
• Combined protection against overload, short circuit and earth leakage
• 30mA sensitivity for enhanced personal and equipment protection
• B-curve tripping characteristic
• Ideal for EV chargers, solar PV systems, heat pumps and sensitive electronic loads

Technical Specification

• Poles: 1P+N
• Rated Current (In): 40A
• 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
• Tripping Curve: 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