SCHNEIDER A9Z51240 Residual Current Circuit Breaker RCCB Type AC 2P 40A 30mA

SCHNEIDER A9Z51240 RCD circuit breaker, RCCB residual current protection device, Type AC 2P 40A 30mA
The SCHNEIDER A9Z51240 is a DIN rail-mounted residual current circuit breaker for 1-phase 1P+N systems, with a rated current of 40 A and a tripping sensitivity of 30 mA, which is the essential value for personal protection against electric shock (Direct Contact Protection) in accordance with international standards.

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.

Applications & Usage
- EV Charger: Primary application specifically designed to meet safety requirements demanding a Type B RCD where smooth DC residual currents exceeding 6 mA may occur.
- Electronics with Inverters: Protects circuits feeding equipment utilizing inverters or converters that may generate DC leakage currents, such as solar inverters (in suitable models/installations), UPS systems, or medical equipment.