Eaton FAZ-B16/3 Miniature Circuit Breaker Type B, 3-Pole, 16 A 278847

Electricians and panel builders use the Eaton FAZ-B16/3 miniature circuit breaker to protect three-phase circuits against overload and short circuit. This 3-pole MCB is rated at 16 A with a Type B tripping characteristic, making it suitable for residential and commercial distribution boards. It mounts on a standard DIN rail and provides reliable protection for cables and connected equipment.

Key specifications

• Number of poles: 3
• Rated current: 16 A
• Tripping characteristic: Type B
• Rated voltage: 230/400 V AC
• Short-circuit breaking capacity: 10 kA
• Frequency: 50/60 Hz
• Mounting type: DIN rail (EN 60715)
• Terminal capacity (solid conductor): 1 - 25 mm²
• Terminal capacity (flexible conductor): 1 - 16 mm²
• Degree of protection: IP20 (terminals), IP40 (with enclosure)
• Standard: IEC/EN 60898-1
• Energy limiting class: 3
• Rated impulse withstand voltage: 4 kV
• Pollution degree: 2
• Operating temperature range: -25 to +75 °C
• Storage temperature range: -35 to +75 °C
• Mechanical life: 20,000 operations
• Electrical life: 10,000 operations
• Module width: 3 modules (52.5 mm)
• Connection type: Screw terminals

Why choose it

The FAZ-B16/3 offers a compact 3-module design that saves space in distribution boards. Its high short-circuit breaking capacity of 10 kA ensures reliable protection in demanding installations. The screw terminals accommodate a wide range of conductor sizes, simplifying wiring.

Ideal use cases

• Protection of three-phase circuits in residential and commercial buildings
• Distribution boards and sub-distribution boards
• Protection of motors, transformers, and other inductive loads (with Type B characteristic)

Good to know

The Type B tripping characteristic means the breaker trips instantaneously at 3 to 5 times the rated current, providing fast response to short circuits while avoiding nuisance tripping from inrush currents. It is compliant with IEC/EN 60898-1.