Hager MBN620 3P+N B-20A 6kA Miniature Circuit Breaker

The Hager MBN620 is a 3-pole plus neutral miniature circuit breaker rated at 20 A with B-curve tripping and a 6 kA short-circuit breaking capacity. It is built for DIN rail mounting and occupies 4 modules, making it a compact choice for distribution boards.

Overview

This MCB provides reliable overcurrent and short-circuit protection for three-phase circuits with neutral. The B-curve characteristic ensures fast tripping on moderate overloads, suitable for general-purpose loads. With a rated voltage of 230/400 V AC and compliance with EN 60898-1, it is designed for residential and commercial installations.

What stands out

• 3P+N configuration protects all three phases and neutral simultaneously.
• 20 A rated current with B-curve for standard applications.
• 6 kA breaking capacity handles typical fault currents.
• Compact 4-module width saves space on the DIN rail.
• Wide terminal capacity (1–25 mm² rigid, 1–16 mm² flexible) for flexible wiring.

Technical details

• Number of poles: 3P+N
• Rated current: 20 A
• Tripping characteristic: B-curve
• Short-circuit breaking capacity (Icn): 6 kA
• Rated voltage: 230/400 V AC
• Rated frequency: 50/60 Hz
• Mounting type: DIN rail
• Module width: 4 modules
• Degree of protection: IP20
• Electrical endurance: 20000 cycles
• Mechanical endurance: 20000 cycles
• Terminal capacity (rigid): 1–25 mm²
• Terminal capacity (flexible): 1–16 mm²
• Standard compliance: EN 60898-1
• Connection type: screw terminals
• Operating temperature range: -25 to 70 °C
• Storage temperature range: -40 to 80 °C
• Rated insulation voltage (Ui): 500 V
• Rated impulse withstand voltage (Uimp): 4 kV

Our verdict

The Hager MBN620 is a solid, spec-compliant MCB for three-phase circuits with neutral, offering a good balance of performance and compactness.