Square D EDB34040 - 40 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Square D EDB34040 from AmpState — a robust 40 A, 480 V, 3-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit protection for panelboards and load centers. Built for environments that demand reliability, this unit combines precise protection with straightforward installation to keep electrical systems safe and uninterrupted.

• Secure bolt-on mounting for a rigid, vibration-resistant bus connection that stays tight through demanding electrical environments.
• Thermal-magnetic trip unit provides stable, repeatable protection performance by responding to both overload conditions and instantaneous short circuits.
• 3-pole configuration suitable for 3‑phase distribution, ideal for commercial and light industrial applications where balanced currents are essential.
• 40 A, 480 V rating designed to protect branch circuits in higher-voltage panelboards and load centers without sacrificing response time or reliability.
• OEM compatibility is engineered to work with matching Square D OEM load centers and panelboards, simplifying replacement and upgrades.
• Versatile application range suitable for residential, commercial, and light industrial environments where safe, effective circuit protection matters most.

Why this breaker stands apart

Unlike generic substitutes, the EDB34040 is purpose-built for Square D panel systems, ensuring seamless fit and predictable protection curves in real-world panel configurations. The bolt-on mounting minimizes movement-related wear in vibration-prone installations, while the thermal-magnetic trip unit guards against nuisance trips and unplanned outages by delivering precise trip characteristics tailored to your circuit demands.

Key specifications at a glance

• Part Number: EDB34040
• Type: Thermal-magnetic molded case circuit breaker
• Amperage: 40 A
• Voltage:
480 V
• Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection
• Manufacturer: Square D

This breaker is ready to slot into compatible OEM panels, protecting critical loads from electrical faults while maintaining system uptime. Whether you're upgrading a panelboard, replacing a failed unit, or stocking a maintenance bin for commercial equipment, the Square D EDB34040 offers dependable performance, straightforward installation, and a clear path to lasting protection in 3‑phase, 480 V systems.