Square D FH16020 A - 20 A, 277 V, 3-Pole Plug-In Circuit Breaker | AmpState

Square D FH16020A is a 20A, 277V, 3-pole plug-in molded case circuit breaker designed to provide reliable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Built for fast serviceability and durable performance, it’s the dependable choice for commercial and light industrial electricalDistribution.

Key reasons electricians choose the FH16020A:

• Fast plug-in connection enables quick installation and straightforward replacements, minimizing downtime during panel maintenance or upgrades.
• Thermal-magnetic trip unit delivers stable, repeatable protection across a range of temperatures and load conditions, reducing nuisance trips and protecting wiring and equipment.
• OEM-compatible design ensures seamless compatibility with matching Square D load centers and panelboards, promoting proper electrical coordination and safe operation.
• Three-pole configuration supports 3-phase 277V circuits, ideal for commercial lighting, distribution, and small industrial control panels.
• Molded case construction combines rugged protection with reliable performance for everyday use in demanding environments.

Technical specifications at a glance

• Manufacturer: Square D
• Part Number: FH16020A
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 20A
• Voltage Rating: 277V
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

This breaker is an excellent fit for professionals who need quick serviceability without sacrificing protection quality. Use it to guard three-phase branch circuits in office complexes, retail spaces, and light industrial facilities where 277V distribution is standard. Its plug-in design simplifies panel upgrades and routine maintenance, while the thermal-magnetic trip mechanism provides dependable, long‑term protection for connected loads.

For reliable performance, pair the Square D FH16020A with compatible Square D load centers and panelboards, verify circuit requirements, and follow standard electrical safety practices during installation and replacement. When you need a proven 3-pole, 277V circuit breaker that blends ease of service with solid protection, the FH16020A is a practical, purpose-built solution.