Square D EDB14020 - 20 A, 277 V, 1-Pole Bolt-On Circuit Breaker | AmpState

The Square D EDB14020 is a 20A, 277V, 1-pole bolt-on molded case circuit breaker designed to deliver dependable branch-circuit overcurrent and short-circuit protection in panelboards and load centers. Built to stay solid under vibration and long-term use, it helps keep critical circuits protected where it matters most.

• Bolt-on mounting: secure, vibration-resistant attachment to the bus, reducing the risk of loose connections and ensuring a stable electrical path.
• Thermal-magnetic trip unit: combines precise overload protection with instantaneous short-circuit response for reliable, repeatable performance across temperature swings.
• OEM-compatible design: engineered to pair with matching Square D panelboards and loadcenters for seamless fit and coordinated protection.
• Versatile 277V operation: ideal for residential, commercial, and light industrial applications that run on higher-voltage branch circuits, such as 277V lighting and small equipment feeds.

Key specifications

• Manufacturer: Square D
• Part number: EDB14020
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 20A
• Voltage rating: 277V
• Number of poles: 1
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Why this breaker is the right choice

When you need dependable protection for 277V branch circuits in panelboards and load centers, the EDB14020 delivers. The bolt-on design ensures a tight bus connection even in environments with vibration or movement, while the thermal-magnetic trip unit provides fast, predictable responses to overloads and short circuits. This combination reduces nuisance trips and helps you maintain power to critical equipment in commercial and light industrial settings.

Ideal use cases

• Commercial panelboards and load centers requiring a 1-pole, 20A, 277V bolt-on breaker for lighting circuits and small feeders.
• Residential-to-light-industrial projects where 277V branch circuits are present and reliable protection is essential.
• Retrofits or new installations where matching OEM components ensure proper fit, coordination, and performance.

Practical installation tips

• Verify that your panelboard accepts bolt-on, 1-pole breakers of the same family for proper fit and electrical coordination.
• Ensure the mounting bus and breaker terminals are clean and free of debris before installation to promote a solid connection.
• Follow the panel manufacturer’s torque specifications and installation guidelines to maintain system integrity and protection performance.