Square D EJB34040 - 40A, 3-Pole, Circuit Breaker

Square D EJB34040 is a 40A, 3-pole circuit breaker built for demanding electrical environments. The three-pole design delivers balanced protection across all live conductors in 3‑phase systems, ensuring the entire circuit disconnects during a fault—an essential feature in industrial power distribution.

Engineered for reliability in panelboards, switchboards, and control panels, this breaker provides dependable overcurrent protection in distribution panels and motor control centers. It’s an excellent choice for industrial, commercial, and OEM applications where safety and uptime matter.

• Current rating: 40A — precise protection for feeders and motors within your system.
• Poles: 3‑Pole — fits 3‑phase configurations and delivers coordinated trip across all phases.
• Type: Circuit Breaker — designed for reliable interruption in fault conditions.
• Applications: Panelboards, switchboards, and control panels in industrial, commercial, and OEM settings.
• Use cases: Ideal for distribution panels and motor control centers, retrofit projects, and new installations needing robust 3‑phase protection.

Why choose the Square D EJB34040? It combines trusted Square D hardware with a 40A capacity, offering a compact, dependable solution for protecting motors, drives, and power feeds without compromising maintenance ease or compatibility with existing Square D enclosures.

Practical considerations: confirm your panel’s interrupting rating and bus compatibility before installation. When installed in the right environment, the EJB34040 supports stable operation and helps minimize risk from overloads and short circuits.

Transition to dependable, precise 3‑phase protection with the Square D EJB34040—a trusted choice for efficient, safe electrical distribution in industrial and commercial settings.