Hager MBN425 4-Pole B-25A 6kA Miniature Circuit Breaker

Protect your electrical circuits from overload and short-circuit with the Hager MBN425, a 4-pole miniature circuit breaker rated for 25 A with B tripping characteristic and 6 kA breaking capacity. This MCB ensures reliable protection for cables and equipment in residential and commercial installations, preventing damage and downtime.

Who is it for

Electricians and panel builders who need a dependable, DIN-rail mountable circuit breaker for three-phase and neutral distribution boards. Ideal for protecting circuits with moderate inrush currents, such as lighting and socket outlets.

Main features

• 4-pole design for three-phase + neutral protection
• Rated current 25 A, B characteristic for general load protection
• 6 kA short-circuit breaking capacity (Icn)
• Compact 4-module width (70 mm) for space-saving installation
• Screw terminals accept rigid conductors up to 25 mm²
• Clear red/green contact position indicator

Specifications

• Number of poles: 4
• Rated current (In): 25 A
• Tripping characteristic: B
• Rated short-circuit breaking capacity (Icn): 6 kA
• Rated voltage (Ue): 230/400 V AC
• Frequency: 50/60 Hz
• Mounting type: DIN rail (EN 60715)
• Module width: 4 modules (70 mm)
• Energy limitation class: 3
• Degree of protection: IP20 (terminals), IP40 (front, when installed)
• Terminal type: Screw terminals
• Terminal capacity rigid: 1-25 mm²
• Terminal capacity flexible: 1-16 mm²
• Standard: EN 60898-1
• Operating temperature: -25 to 70 °C
• Storage temperature: -40 to 80 °C
• Electrical endurance: 10,000 cycles
• Mechanical endurance: 20,000 cycles
• Connection position: Top or bottom
• Contact position indicator: Red/Green

Tips

Ensure the breaker is installed by a qualified electrician and that the upstream protection is coordinated. For optimal performance, use appropriate cable sizes and torque settings as per installation standards.