RP-Onesto KRCS2pro RCBO combines residual current device (RCD) and miniature circuit breaker (MCB) protection in one 1P+N DIN-rail unit rated at 20A, 6kA breaking capacity and 30mA Type A sensitivity, compliant with IEC/EN 61009-1.

Key Features

• Combined RCD + MCB in one unit – detects current leakage to earth and protects against short circuit and overload in a single DIN-rail module
• 1P+N configuration for single-phase circuits with neutral protection
• Rated current 20A with curve C tripping characteristic – suited for higher-load circuits
• 6kA rated short-circuit breaking capacity (Icn) for robust fault clearance
• 30mA residual current sensitivity, Type A – detects both AC and pulsating DC leakage currents
• Independent circuit operation: only the faulted RCBO trips, leaving other circuits powered

Product Benefits

• Higher 20A rating suits circuits with heavier appliances (washing machines, dishwashers, ovens)
• Protects people from electric shock and wiring from overload in a single module
• Single module replaces a separate RCD + MCB pair, saving DIN-rail space
• Independent tripping prevents a fault in one circuit causing whole-house power loss

Technical Specifications

• Standard: IEC/EN 61009-1
• Number of poles: 1P+N
• Rated current: 20A
• Rated voltage: 230/240V AC
• Frequency: 50/60Hz
• Impulse withstand voltage (Uimp): 4kV
• Tripping curve: C
• Residual current (IΔn): 30mA (also available 10mA)
• Short-circuit capacity (Icn): 6kA
• Type: A (AC and pulsating DC)
• Protection index: IP20
• Ambient temperature: -25°C to +55°C
• Number of modules: 1
• MPN: 30483

Why You'll Love It

• 20A rating handles heavier domestic loads not covered by the 16A version
• Meets current mandatory installation requirements for high-load appliance circuits
• Type A sensitivity catches leakage from modern inverter-driven appliances and EV chargers
• Saves DIN-rail space by combining two protective functions in one module width