Overcurrent circuit breaker Icn=15000A / Icu=15kA 3P B 80A HMB380

Three-pole overcurrent circuit breaker – reliable installation protection

This three-pole overcurrent circuit breaker with B characteristic is a key element of every safe electrical installation. It provides effective protection against overloads and short circuits, protecting both devices and users. Its compact design and flush-mounting option make it ideal for a variety of applications – from home installations to commercial facilities.

Characteristics and application

The HMB380 circuit breaker is designed to protect circuits with a rated current of 80A. The B characteristic means that the circuit breaker reacts quickly to an increase in short-circuit current, but is more tolerant of short-term inrush currents, which is particularly important for devices with induction motors or other pulsed loads. The rated short-circuit breaking capacity (Icn) is as high as 15kA at 230V and 400V, guaranteeing high reliability in emergency situations. The rated impulse withstand voltage Uimp of 6kV further increases system safety.

Construction and mounting

The circuit breaker is 4.5 modules wide, making it easy to integrate with existing switchboards. It has screw terminals allowing connection of wires with a cross-section from 1 to 70 mm² (solid) and from 1 to 50 mm² (stranded). Flush mounting provides an aesthetic appearance of the installation. The IP20 degree of protection protects against accidental contact, and the wide operating temperature range (-25°C to +70°C) allows it to be used in various environmental conditions. The possibility of additional equipment allows the circuit breaker to be adapted to specific installation needs. Made of high-quality materials, it ensures long-lasting and trouble-free operation.