Hager MBN125 MCB 1P B25A 6kA DIN Rail Miniature Circuit Breaker

The Hager MBN125 is a 1-pole miniature circuit breaker with B trip characteristic, rated at 25A for use in 230-400V AC systems. It delivers a breaking capacity of 6 kA at 230V AC per IEC 60898-1 and an ultimate short-circuit breaking capacity of 10 kA at 400V AC per IEC 60947-2. At just 17.5mm wide, it occupies a single DIN rail module and suits compact residential and commercial distribution boards.

Technical specifications:

• Catalog reference: MBN125
• Manufacturer: Hager
• Product type: 1-pole miniature circuit breaker, B characteristic
• Rated current: 25A
• Breaking capacity Icn at 230V AC (IEC 60898-1): 6 kA
• Ultimate breaking capacity Icu at 400V AC (IEC 60947-2): 10 kA
• Rated operating voltage Ue: 230-400V AC
• Insulation voltage Ui: 500V
• Impulse withstand voltage Uimp: 4000V
• Frequency: 50-60 Hz
• Number of modules: 1
• Dimensions (H x W x D): 83 x 17.50 x 70 mm
• Connection cross-section, solid conductor: 1-35 mm²
• Connection cross-section, flexible conductor: 1-25 mm²
• Terminal torque: 2.80 Nm
• Upper terminal type: screw connection
• Lower terminal type: biconnect
• IP rating: IP20
• Operating temperature: -25 to 70°C
• Power dissipation at rated current: 3W
• Energy limitation class: 3
• Pollution degree: 2 (IEC 60664 / IEC 60947-2)
• RoHS compliant: Yes

Features and benefits:

• 360° mounting flexibility allows installation in any orientation on DIN rail.
• biconnect lower terminal enables direct connection without additional wiring accessories.
• Rated for all climate zones with an operating range of -25 to 70°C.
• Single-module width (17.5mm) maximises space in confined distribution boards.
• Energy limitation class 3 reduces let-through energy during short-circuit events.

Applications:

• Residential consumer units and distribution boards requiring compact 1-pole overcurrent protection.
• Commercial panel boards protecting lighting circuits and general-purpose socket outlets.
• Industrial control cabinets where space-saving single-module devices are required.
• Installations across varied climate conditions due to wide operating temperature range.

Also known as: Hager MBN125, 1-pole B25 MCB, single-pole miniature circuit breaker 25A.