Square D EDB14050 - 50 A, 277 V, 1-Pole Bolt-On Circuit Breaker | AmpState

Meet the Square D EDB14050 — a robust, single-pole bolt-on circuit breaker designed to deliver steady branch-circuit protection for panelboards and load centers. With a 50-amp rating and 277-volt capacity, this molded-case breaker is built to guard wiring and connected equipment against overcurrent and short circuits in residential, commercial, and light industrial settings.

• Secure bolt-on mounting creates a rigid, vibration-resistant bus connection, helping maintain reliable electrical performance in environments with movement or vibration.
• Thermal-magnetic trip unit provides stable, repeatable protection—activating quickly on short circuits while minimizing nuisance trips on normal inrush.
• OEM-compatible design works with matching Square D load centers and panelboards, simplifying upgrades, retrofits, and service replacements without compatibility concerns.
• Versatile, industry-appropriate rating 50A at 277V makes it suitable for controlling and protecting circuits in commercial lighting, equipment feeds, and other 277V applications.

Technical specifications

• Manufacturer: Square D
• Part Number: EDB14050
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 50A
• Voltage Rating: 277V
• Number of Poles: 1
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Who this is for and practical use

Electricians and facility managers choosing dependable protection for 277V circuits will appreciate the EDB14050’s combination of secure mounting and precise protection. It’s an excellent choice for upgrading older panels, outfitting new office or retail spaces, and ensuring reliable performance in light industrial installations where vibration or equipment startup surges are a consideration. If you’re tasked with protecting a single, critical branch circuit in a 277V system, this bolt-on breaker delivers the right balance of protection and ease of installation.

Why choose this model over alternatives

The bolt-on mounting for a solid bus connection reduces movement-related wear over time, while the thermal-magnetic trip unit provides predictable response across a range of fault conditions. When paired with compatible OEM panelboards, it minimizes compatibility risks and simplifies maintenance planning, helping you avoid mismatched components that can complicate service later on.

In short, the Square D EDB14050 is a purpose-built, reliable solution for safeguarding 277V branch circuits with a focus on durability, precise protection, and seamless panel compatibility—aligned with real-world electrical needs in homes, offices, and light commercial environments.