Hager MBN325 3-Pole 25 A B-Characteristic Miniature Circuit Breaker, 6 kA, 3 Modules

The Hager MBN325 is a 3-pole miniature circuit breaker (MCB) with a rated current of 25 A and B tripping characteristic, offering reliable protection against overload and short-circuit in electrical installations. Its 6 kA breaking capacity ensures safe interruption of fault currents, making it suitable for residential and commercial distribution boards.

Advantages

With three modules width, this MCB optimizes space on the DIN rail while providing robust protection. The B-curve ensures fast tripping on moderate inrush currents, ideal for general lighting and socket circuits. Screw terminals accommodate conductors up to 25 mm², facilitating easy and secure wiring.

Suitable for

• Protection of three-phase circuits in residential and commercial buildings
• Distribution boards requiring DIN rail mounting (EN 60715)
• Applications with a supply frequency of 50/60 Hz and rated voltage up to 230/400 V AC

Key specifications

• Number of poles: 3
• Rated current: 25 A
• Tripping characteristic: B
• Rated breaking capacity: 6 kA
• Rated voltage: 230/400 V AC
• Frequency: 50/60 Hz
• Module width: 3 modules
• Energy limitation class: 3
• Standard: EN 60898-1
• Terminal capacity: 1-25 mm² (rigid), 1-16 mm² (flexible)
• Degree of protection (terminals): IP20
• Operating temperature: -25 to +50 °C
• Storage temperature: -40 to +70 °C
• Electrical endurance: 10,000 cycles
• Mechanical endurance: 20,000 cycles

Recommendations

For optimal performance, install the Hager MBN325 in a suitable distribution board with proper ventilation. Ensure that the upstream protection and cable cross-sections are coordinated according to local regulations. Regular inspection of terminal tightness is recommended to maintain reliable operation.