The Wylex SP+SN Miniature Type B Module (NHXS1B40) is a single-phase, DIN rail mounted circuit breaker with a maximum amperage of 40A. It is suitable for walls in an interior setting and is designed for instantaneous tripping characteristics. This white RCBO module, made of ABS/plastic material, features an on/off operation method and is suitable for AC currents. With a compact design and a voltage range of 201-250V, this Wylex module is a reliable choice for electrical protection in a variety of settings.