SCHNEIDER A9R74463 Residual Current Circuit Breaker (RCCB) Type AC 4P 63A 300mA

RCD Circuit Breaker SCHNEIDER A9R74463 Earth Leakage Protection Device RCCB Type AC 4P 63A 300mA
The SCHNEIDER A9R74463 residual current circuit breaker is a reliable modular device designed to trip the circuit immediately upon detecting earth leakage currents exceeding 300 mA. Engineered for maximum maintenance safety with VisiSafe technology, it also reduces troubleshooting time with the VisiTrip indicator, which clearly flags the faulty circuit. Please note: This RCCB must always be installed alongside an MCB or MCCB to provide complete protection against overload and short circuits.

Specifications
- VisiSafe: Features a clearly visible green indicator strip on the toggle to indicate that the contacts are fully open, ensuring safety during maintenance.
- VisiTrip: Features a mechanical tripping indicator to help identify faulty circuits easily and quickly, reducing maintenance downtime.
- Earth leakage protection only: Detects and trips only on residual current/earth leakage (distinct from overcurrent/short-circuit protection functions).
- High durability: Mechanical durability of up to 20,000 cycles and electrical durability of 15,000 cycles.
- Easy Installation: Designed for DIN rail mounting with easily accessible terminals (accepts up to 35 mm² rigid cable).

Applications & Usage
- Main Distribution Board: Used as upstream earth leakage protection in 3-phase (380V/415V) electrical systems of medium to large buildings.
- Commercial and Industrial Buildings: Installed in offices, small factories, and public buildings to protect against: Fire: from earth leakage currents at 300 mA Equipment Damage: from indirect contact