Circuit Breaker

YYSM1L-50 RCBO Circuit Breaker RCCB Breaker

The YYSM1L-50 RCBO circuit breaker is a dual-function RCCB circuit breaker designed for 230V/400V systems, combining residual current protection with thermal-magnetic overcurrent tripping. As a smart circuit breaker, it features adaptive tripping technology to detect earth leakage within 0.1s while offering 4.5KA to 6KA breaking capacity across pole configurations (1P+N, 2P, 3P, 3P+N, 4P). With rated currents from 6A to 63A and 50/60Hz compatibility, this compact RCBO suits residential, commercial, and industrial applications, providing real-time fault indication and DIN rail mounting for easy installation.

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Standard Capacity

Rated Voltage	230V/400V
Number of Poles	1P+N, 2P, 3P, 3P+N, 4P
Rated Current	6A~63A
Rated Frequency	50/60Hz
Breaking Capacity	4.5KA, 6KA

Product Features

Dual-Function Protection

As an RCBO, it integrates overcurrent protection (6–63A) with residual current device (RCD) functionality, detecting earth leakage to act as a reliable earth leakage breaker. With 4.5KA/6KA breaking capacity, it safeguards 230V/400V AC circuits from overloads, short circuits, and electric shocks.
Versatile Configuration for All Scenarios

Available in 1P+N, 2P, 3P, 3P+N, and 4P variants, this AC circuit breaker adapts to single-phase and three-phase systems, ideal for residential, commercial, and industrial setups. DIN rail mounting and compact design ensure easy installation across diverse electrical panels.
Reliable Safety & Compliance

Featuring real-time fault indication and flame-retardant housing, it meets IEC standards for consistent performance. Its thermal-magnetic tripping mechanism offers rapid response (≤0.1s) in 50/60Hz networks, ensuring long-term durability in harsh environments.