RCBOs combine residual current protection and overcurrent protection in a single device. This makes them ideal for use in distribution boards where space is limited. Our RCBOs of the RCBO 1 series are optimized for British Standard distribution systems. Their rated breaking capacity is 10 kA. Type AC circuit-breakers only detect alternating fault currents. In the UK, they are only approved for use with fixed equipment, where it is known that the load current contains no DC components. With tripping characteristic B, these circuit-breakers ensure reliable protection for your circuits without high inrush currents. Switches in this design are voltage-dependent, hence adapted for the UK market.

mains-voltage-dependent tripping, compact design for all rated currents, high short-circuit resistance, green/red switching position indicator, strain-relief clamps with protection against wires being lodged behind them , bi-stable snap-in slider for easy mounting and removal

quick fastening to mounting rail, any installation position, supply as desired

Power supplies to residential and purpose-built buildings as well as industrial facilities with TN-S, TT and TN-C-S networks. In IT networks, the RCBOs of this series can be set to switch off in the event of a second fault, Not permitted for use in TN-C networks and for protecting systems in which electronic equipment may cause pulsating or smooth DC residual currents or residual currents with frequencies not equal to 50 Hz. Comprehensive protection is not provided with an RCCB type AC. For these applications we recommend our residual current operated circuit-breakers with integral overcurrent protection Type A or our AC-DC sensitive RCBO Type B.

• Data sheet RCBO1 B45/0,03/1-AC
• Dimensional drawing Group view
• Wiring diagram