Eaton FAZ-B10/3 Miniature Circuit Breaker Type B, 10 A, 3-Pole, 10 kA 278843

Electricians and panel builders rely on the Eaton FAZ-B10/3 miniature circuit breaker to protect three-phase circuits in industrial control panels, building distribution boards, and machine installations. Its Type B tripping characteristic makes it ideal for lighting and socket circuits with moderate inrush currents.

Key specifications

• Rated current: 10 A
• Number of poles: 3
• Tripping characteristic: Type B
• Rated breaking capacity: 10 kA according to EN 60898
• Rated voltage: 230/400 V AC
• Frequency: 50/60 Hz
• Mounting type: DIN rail (EN 60715)
• Degree of protection: IP20 (terminals), IP40 (front)
• Terminal capacity: 1-25 mm² (solid/stranded)
• Rated insulation voltage: 440 V
• Rated impulse withstand voltage: 4 kV
• Energy limiting class: 3
• Operating temperature range: -25 to +75 °C
• Electrical endurance: >10,000 operations
• Mechanical endurance: >20,000 operations
• Installation depth: 70.5 mm
• Module width: 3 (52.5 mm)

Why choose it

The FAZ-B10/3 offers reliable short-circuit and overload protection in a compact 3-module housing. Its screw terminals accept a wide range of conductor sizes, and the high breaking capacity ensures safe interruption of fault currents in demanding installations.

Ideal use cases

• Protection of three-phase lighting and socket circuits
• Control circuit protection in industrial machinery
• Distribution boards in commercial and residential buildings

Good to know

The breaker complies with EN 60898-1 and IEC 60898-1 standards. It is designed for DIN rail mounting and can be installed in standard distribution enclosures.