Description

The Contactum Circuit Breaker 40 A (model CPB0640B) is a reliable and compact miniature circuit breaker (MCB) designed for effective protection in single-phase electrical circuits. Featuring a B‑characteristic tripping curve, it trips quickly at 3–5× its rated current, making it ideal for general-use circuits with low inrush currents such as lighting and socket circuits. Rated for 40 A and with a high 6 kA short-circuit breaking capacity, it ensures safe disconnection under fault conditions. Compliant with BS EN 60898, it is built for DIN-rail mounting in distribution boards like Contactum Defender units.