Circuit breaker Icu=50kA 1P C 63A HMX163

High short‑circuit rating circuit breaker, intended for residential and commercial installations

It is a single‑pole circuit breaker with a rated short‑circuit capacity of 50 kA, designed to protect circuits in AC systems up to 415 V. The C characteristic allows it to withstand short‑duration current surges that occur when starting motor‑driven equipment – e.g., pumps, fans or machine tools – without unnecessary tripping.

Surface‑mount installation simplifies fitting in standard distribution cabinets. The dimensions are optimized for dense placement – it occupies only 1.5 modules, enabling more efficient use of space in the panel. Single‑core cable connections up to 70 mm² and multi‑core up to 50 mm² provide flexibility for various cable types, both in new installations and retrofits.

IP20 protection rating offers basic protection against accidental contact with live parts – sufficient for indoor use. It operates reliably over a wide temperature range: from –25 °C to +70 °C, making it suitable even for unheated rooms or locations with large temperature fluctuations.

Energy‑limiting class 3 and surge‑category 3 indicate that the breaker is designed for environments with increased risk of overloads and surges – typical for industrial networks or buildings with many electronic devices. Pollution degree 3 confirms its resistance to dust and moisture that may be present in industrial or storage conditions.

Compliant with PN-EN 60947-2 and EU directives (2014/30/EU, 2014/35/EU), it meets low‑voltage equipment safety requirements. Optional accessories (e.g., disconnect coil or auxiliary contacts) enable easy integration with automation or remote‑control systems.

Simultaneous disconnection of the neutral conductor is not possible – this is a phase‑only protective device. This is the standard solution for single‑phase circuits where the neutral is switched by the main breaker or contactor.