SCHNEIDER A9R12491 RCD / RCCB Circuit Breaker Type AC 4P 100A 30mA

SCHNEIDER A9R12491 RCD Circuit Breaker, Residual Current Device, RCCB Type AC 4P, 100A 30mA
The Schneider circuit breaker is a residual current circuit breaker (RCCB) in the Acti 9 iID series, critical for electrical system safety. Designed to protect against electric shock from indirect contact and prevent fires caused by earth leakage currents in 3-phase (4P) electrical systems. It features a rated current of up to 100A and a tripping sensitivity of 30mA, which is an ideal level for primary or secondary protection in large 3-phase electrical systems. It is an instantaneous AC Type. This device must be used in conjunction with a circuit breaker (MCB or MCCB) for overload and short-circuit protection.

Specifications
- Fire protection and indirect contact electric shock protection
- Suitable for installation as an earth leakage protection device in main distribution boards 
- Capable of detecting pure sinusoidal AC leakage currents, which are common in standard electrical appliances
- The tripping mechanism operates independently of the supply voltage (voltage-independent, no electronic circuits), ensuring that the device trips immediately for safety upon an earth leakage current, even during low voltage or fluctuations


Applications & Usage
- Protects internal circuits in residential/commercial/light industrial buildings that require leakage current protection and reduced fire risk
- Used in systems requiring immediate power disconnection upon earth leakage (e.g., machine rooms, kitchens, water pump systems)
- Suitable for use in combination with branch breakers / MCCBs or other MCBs in control panels