Eaton FAZ-B4/2 4A 2-Pole 277 V Circuit Breaker

Meet the Eaton FAZ-B4/2 4A 2-Pole 277 V Circuit Breaker — a precise protection device designed for commercial electrical systems that run on 277 volts. With a 4-amp current rating and a sturdy 2-pole configuration, this breaker delivers targeted overcurrent protection for small, essential loads while ensuring safe, simultaneous disconnection of both conductors when faults occur.

Key benefits you’ll notice in daily operation:

• Dual-pole safety: Trips both conductors together, preventing dangerous line-to-line faults and improving overall panel safety.
• Low-current protection: 4 A rating is ideal for protecting smaller loads and control circuits without nuisance trips on routine startup.
• 277 V specialization: Engineered for commercial environments that use 277-volt distribution, including lighting and certain HVAC/control circuits.
• Reliable part family: Part Number FAZ-B4/2 belongs to Eaton’s FAZ family, designed for dependable performance and straightforward replacement in compatible panels.

Ideal applications include office and retail lighting feeds, small machinery controls, signage power, and other 277V branch circuits where precise protection matters. If you’re maintaining or upgrading electrical panels that handle 277V loads, this 4A 2-pole breaker provides a durable, standards-aligned solution that helps safeguard wiring, reduce downtime, and extend equipment life.

Practical tips for use and selection:

• Confirm that your installation uses a 277 V distribution scheme and that the panel accepts FAZ-series 2-pole breakers before installation.
• Use as a dedicated protection device for small-control circuits or lighting feeders where a low-current breaker is appropriate.
• When the circuit trips, inspect the protected load and wiring to identify overload or fault conditions, then reset once the fault is resolved.
• Keep spare FAZ-B4/2 units on hand for quick replacement in scheduled maintenance or panel upgrades.

• Current rating: 4 A
• Poles: 2
• Voltage rating: 277 V
• Part number: FAZ-B4/2
• Product family: FAZ series