The WSES-40/4 is a 40 Amp, 415-240 VAC, 30 mA trip RCD Circuit Breaker by WYLEX. This RCD circuit breaker is designed to provide reliable and efficient protection against electrical faults. With its 40 Amp load rating, 415/240 VAC voltage rating, and 30 mA trip sensitivity, this RCD circuit breaker ensures safe and secure electrical operation, making it an essential component for electrical systems.