Overcurrent circuit breaker, 6kA, B characteristic, 3-pole, 40A MBN340E

Safety and reliability in your electrical installation

This three-pole circuit breaker from Hager, with a rated current of 40A and B characteristic, is a key element in protecting electrical circuits. It provides effective protection against overloads and short circuits, minimizing the risk of damage to equipment and fires. The B characteristic means the breaker reacts quickly to sudden current surges, but also allows for short-term loads, typical of devices with motors – without unnecessary tripping.

Design and application

The MBN340E circuit breaker is designed for mounting on a DIN rail, making it easy to integrate with existing distribution boards. Its compact width of 3 modules saves space in the distribution cabinet. Designed for operation in installations with a voltage of 400V AC, it meets the requirements of IEC EN 60898-1 standard. The possibility of connecting wires with a cross-section from 1 to 35 mm² (solid core) and from 1 to 25 mm² (stranded) provides flexibility during installation.

Key features and benefits

• High breaking capacity: The rated short-circuit breaking capacity Icn is 6kA at 400V, and Icu at 400V is as much as 10kA – guaranteeing effective disconnection of the circuit in the event of a failure.
• Wide operating temperature range: The circuit breaker maintains its properties in the temperature range from -25°C to 70°C, making it suitable for use in various environmental conditions.
• Solid construction: IP20 protection degree provides protection against touch and contamination.
• Versatility: Suitable for industrial, commercial and residential installations.
• Safety: Compliance with IEC EN 60898-1 confirms a high level of safety.
• Easy installation: DIN rail mounting and the ability to connect different types of wires facilitate installation and maintenance.
• Durability: Mechanical endurance of 20,000 cycles ensures long-lasting and reliable operation of the device.