Square D EDB14040 - 40 A, 277 V, 1-Pole Bolt-On Circuit Breaker | AmpState

Introducing the Square D EDB14040—a purpose-built 40A, 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 perform in demanding commercial, residential, and light industrial environments, this breaker pairs robust mechanics with precise protection characteristics you can trust.

Why this breaker stands out

• Secure bolt-on mounting creates a rigid, vibration-resistant bus connection, reducing loosening risks in environments with equipment motion or building vibration.
• Thermal-magnetic trip unit for stable, repeatable protection performance—accurate overload sensing paired with fast magnetic response to short circuits.
• OEM-compatible design aligns with matching load centers and panelboards, simplifying installation, retrofit projects, and future serviceability.
• Versatile electrical rating at 277V makes it suitable for commercial lighting, HVAC controls, and other 277V distribution circuits in a variety of building types.

What it does for you

This molded case circuit breaker monitors current flow on a single pole and automatically interrupts power when an overcurrent or short-circuit condition is detected. By providing fast, reliable tripping, it helps safeguard wiring, transformers, and connected equipment while minimizing downtime and potential damage.

Key specifications at a glance

• Manufacturer: Square D
• Part number: EDB14040
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 40 A
• Voltage rating: 277 V
• Number of poles: 1
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use scenarios

• Commercial buildings requiring reliable 277V distribution protection for lighting panels and control circuits
• Residential-conversion or mixed-use installations where OEM panel compatibility is essential
• Light industrial panels and retrofit projects needing a sturdy, vibration-resistant breaker

Installation tips and long-term reliability

• Pair with compatible OEM load centers and panelboards to maintain electrical system integrity and simplify future replacements.
• Leverage its bolt-on design in installations subject to vibration or where secure bus connections are critical for consistent protection performance.
• Rely on the thermal-magnetic trip for predictable response across varying ambient temperatures and load conditions, reducing nuisance trips and improving reliability.

Choose the Square D EDB14040 for a trusted, OEM-aligned, 1-pole protection solution that delivers solid 40A performance at 277V—protecting your circuits, equipment, and peace of mind in one dependable package.