Hager MCN620 3P+N C-Curve 20A 6kA Miniature Circuit Breaker

Electrical circuits need reliable protection against overloads and short circuits, and the Hager MCN620 delivers that with a 20 A C-curve trip characteristic and 6 kA breaking capacity. This 3-pole + neutral miniature circuit breaker is built for DIN rail mounting in distribution boards, where it guards cables and connected equipment from damage caused by excessive current.

Who is it for

Electricians and panel builders who install or maintain residential and commercial electrical installations. It suits circuits with moderate inrush currents, such as lighting, socket outlets, and small motors, where a C-curve provides a balance between nuisance tripping and protection.

Main features

• 3P+N configuration for three-phase circuits with switched neutral
• Rated current 20 A with C-curve tripping characteristic
• Short-circuit breaking capacity of 6 kA according to EN 60898-1
• Compact 4-module width for DIN rail mounting
• Screw terminals accept rigid conductors up to 35 mm² and flexible up to 25 mm²
• Operating temperature range from -25°C to +70°C

Specifications

• Number of poles: 3P+N
• Rated current: 20 A
• Tripping characteristic: C
• Breaking capacity: 6 kA
• Rated voltage: 230/400 V AC
• Frequency: 50/60 Hz
• Mounting: DIN rail
• Module width: 4 modules
• Terminal capacity: 1-35 mm² rigid, 1-25 mm² flexible
• Electrical endurance: 20000 cycles
• Mechanical endurance: 20000 cycles
• Operating temperature: -25 to 70 °C
• Connection type: Screw terminals
• Rated impulse withstand voltage: 4 kV
• Energy limitation class: 3

Tips

When installing, ensure the breaker is properly seated on the DIN rail and the terminals are tightened to the recommended torque. For circuits with high inrush currents, verify that the C-curve is appropriate to avoid nuisance tripping.