Overcurrent circuit breaker Icu=50kA 2P C 63A HMX263

Circuit breaker with short‑circuit rating 50 kA, intended for industrial and commercial installations

Protects circuits with motors, transformers or other loads with high inrush current thanks to the C characteristic — reacts slower to short‑duration currents, eliminating unnecessary tripping during device start‑up. Designed for surface‑mounting in distribution cabinets, occupies 3 modules (53 mm width) and has a mounting depth of 70 mm — compatible with most standard cabinets.

Operates reliably over a wide temperature range — from -25 °C to +70 °C — making it suitable for both unheated rooms and installations in high ambient temperature conditions. Rated voltage 415 V AC and insulation to 500 V ensure safety in 400 V three‑phase systems. Short‑circuit breaking capacity is 50 kA at both 230 V and 400 V — meets the highest requirements for distribution circuits in commercial and industrial buildings.

Connectors accept single‑core conductors from 1 to 70 mm² and multi‑core from 1 to 50 mm² — connection flexibility allows use of both rigid and flexible cables without the need for terminations. Clamping torque is 3.6 Nm — sufficient for a secure connection without risking insulation damage. The device has energy‑limiting class 3 — reduces the amount of energy flowing through the installation during a fault, decreasing the risk of damage to couplings or cables.

IP20 protection rating provides basic protection against finger contact and small objects — suitable for indoor use. Does not have a disconnectable neutral pole — it is a 2‑pole (2P) circuit breaker where only the phases are disconnected. Support for additional accessories (e.g., lockouts, over‑voltage release devices) enables easy expansion of the protection system.

Compliant with IEC 60947-2 and IEC 60898-1, meeting standard requirements for high‑short‑circuit‑capacity circuits. Impulse voltage class 3 and pollution degree 3 confirm its resistance to environmental conditions typical for distribution cabinets in production plants or warehouses.