Hager MBN320 3-Pole 20 A B-Characteristic Miniature Circuit Breaker, 6 kA, 3 Modules

The Hager MBN320 delivers a 6 kA rated breaking capacity in a compact 3-module design, providing reliable protection for three-phase circuits up to 20 A with B-characteristic tripping.

Overview

The Hager MBN320 is a 3-pole miniature circuit breaker (MCB) with a rated current of 20 A and B tripping characteristic. It is designed for DIN rail mounting (EN 60715) and occupies 3 modules (3 TE) of width. The breaker operates at a rated voltage of 230/400 V AC and a frequency of 50/60 Hz, making it suitable for a wide range of electrical distribution applications.

What stands out

• 3-pole switching for three-phase circuits
• 20 A rated current with B-characteristic for general load protection
• 6 kA breaking capacity for safe interruption of fault currents
• Compact 3-module width saves space in distribution boards
• Screw terminals accept rigid conductors from 1 to 25 mm² and flexible conductors from 1 to 16 mm²

Technical details

• Number of poles: 3
• Rated current (In): 20 A
• Tripping characteristic: B
• Rated breaking capacity (Icn): 6 kA
• Rated voltage (Ue): 230/400 V AC
• Frequency: 50/60 Hz
• Mounting type: DIN rail (EN 60715)
• Module width: 3 modules (3 TE)
• Energy limitation class: 3
• Degree of protection: IP20 (terminals), IP40 (device front)
• Terminal capacity (rigid): 1 to 25 mm²
• Terminal capacity (flexible): 1 to 16 mm²
• Operating temperature: -25 to 70 °C
• Storage temperature: -40 to 80 °C
• Electrical endurance: 20000 cycles
• Mechanical endurance: 20000 cycles
• Standard: EN 60898-1
• Connection type: Screw terminals
• Overvoltage category: III
• Pollution degree: 2

Our verdict

The Hager MBN320 is a robust and reliable choice for protecting three-phase circuits up to 20 A. Its 6 kA breaking capacity and B-characteristic make it ideal for general distribution applications, while the compact 3-module design helps optimize space in electrical panels.