The Proteus 100A RCD 100/2/30T 30mA is a fixed residual current circuit breaker with overload protection, suitable for electrical wiring applications. With a maximum amperage of 100A and an IP40 rating, this on/off switch is designed for wall mounting in interior rooms. It offers short circuit protection and has a break time of instantaneous, making it ideal for providing safety in electrical systems. The Proteus brand ensures reliability and quality in this essential electrical equipment.