FuseBox RTAMB20 Mini RCBO 20A 6kA

The FuseBox RTAMB20 is a compact 20A mini RCBO (Residual Current Breaker with Overcurrent Protection) designed to provide combined protection against overloads, short circuits, and earth leakage faults in residential and light commercial electrical installations. It integrates MCB and RCD functionality into a single module, helping to save space in consumer units while maintaining full circuit protection.

It features a B Curve tripping characteristic, making it suitable for circuits with low to moderate inrush currents such as socket outlets, lighting circuits, and general-purpose final circuits. The Type A residual current protection detects both AC and pulsating DC fault currents, ensuring compatibility with modern electrical systems that include electronic loads and appliances.

With a 6kA short-circuit breaking capacity and 30mA residual operating sensitivity, the RTAMB20 provides reliable protection against electric shock and fire hazards. The device also includes double-pole switching (live and neutral isolation) for improved safety during maintenance and fault conditions.

Designed for FuseBox consumer units, it features a compact single-module DIN rail design with a flying neutral lead for straightforward installation. It complies with IEC/EN 61009-1 and IEC/EN 61009-2-2 standards, supporting current wiring regulations and 18th Edition requirements.

Key Features

• 20A current rating
• Type A residual current protection
• B Curve tripping characteristic
• 30mA earth leakage sensitivity
• 6kA short-circuit breaking capacity
• 1P+N double-pole switching (live + neutral)
• Compact single-module design
• DIN rail mounting with flying neutral lead