Square D EJB34100SA - 110 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Discover reliable protection with the Square D EJB34100SA — a 110 A, 480 V, 3-pole bolt-on molded case circuit breaker designed to safeguard branch circuits in panelboards and load centers. Built for dependable overcurrent and short-circuit protection, this breaker helps keep electrical systems safe and running smoothly across residential, commercial, and light industrial environments.

Key advantages

• Secure bolt-on mounting delivers a rigid, vibration-resistant bus connection for stable, long-lasting performance.
• Thermal-magnetic trip unit provides stable, repeatable protection by responding to both overload and short-circuit conditions.
• 3-pole design optimized for 480 V systems, ideal for three-phase distribution in larger panels.
• OEM compatibility works with matching Square D load centers and panelboards, ensuring a seamless integration into existing systems.
• Versatile applications suitable for residential, commercial, and light industrial installations needing dependable branch circuit protection.

Technical snapshot

• Manufacturer: Square D
• Part number: EJB34100SA
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 110 A
• Voltage rating: 480 V
• Number of poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases

Install the EJB34100SA in commercial panelboards and load centers that feed three-phase equipment, machines, or large circuits operating at 480 V. It’s well-suited for office buildings, retail spaces, light industrial facilities, and residential complexes with complex distribution needs. Its bolt-on design accelerates serviceability in environments where vibration might affect connections, and its thermal-magnetic trip ensures predictable responses during fault events.

Practical considerations and tips

• Ensure pairing with the correct OEM load center or panelboard to maintain compatible trip characteristics and mechanical fit.
• Use in circuits requiring reliable protection against both overheating and short circuits, reducing the risk of equipment damage and fire hazards.
• Plan for straightforward maintenance or replacement with bolt-on mounting, which can simplify field servicing in dense electrical racks.

Powered by Square D reliability, the EJB34100SA delivers precise protection for your 480 V, 3-phase distribution needs. Whether upgrading a panel, stocking spare breakers for service fleets, or assembling a new commercial electrical distribution, this 110 A, 3-pole bolt-on breaker provides clear protection performance and seamless compatibility with established Square D panel ecosystems.