Square D EJB24125 - 125 A, 480 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Meet the Square D EJB24125 — a dependable 125A, 480V, 2-pole bolt-on molded case circuit breaker designed to safeguard branch circuits in panelboards and load centers. Built to withstand the rigors of busy electrical rooms, it delivers consistent protection when it matters most.

Secure bolt-on mounting for a vibration-resistant connection — the bolt-on design locks the breaker firmly to the bus, reducing movement and ensuring stable performance in environments with vibration or equipment activity.

Thermal-magnetic trip unit for stable, repeatable protection — combines precise thermal overload sensing with magnetic instantaneous trip, delivering reliable protection against both lingering overloads and sudden short circuits.

OEM-compatible for seamless integration — engineered to pair with matching Square D OEM load centers and panelboards, guaranteeing proper fit, coordinated trip behavior, and straightforward upgrades within existing systems.

Versatile for multiple applications — suitable for residential, commercial, and light industrial installations where a robust 125A, 480V two-pole breaker is needed to protect feeders and branch circuits.

Key specifications

• Manufacturer: Square D
• Part number: EJB24125
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 125A
• Voltage rating: 480V
• Number of poles: 2
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Why this matters in real-world sets:

• Reliable protection for feeders and branch circuits in panelboards and load centers, reducing downtime and equipment stress during faults.
• Easy retrofits in existing Square D systems thanks to OEM-compatible dimensions and trip characteristics.
• Consistent protection across varied environments, from compact residential panels to commercial service enclosures and light industrial installations.

Available from AmpState, this is a genuine Square D component designed to align with your panel’s specifications and performance expectations. With the EJB24125, you get a precise fit, dependable protection, and a clear path for compliant upgrades in your electrical infrastructure.

Usage and installation tips — Ensure power is disconnected and follow panel manufacturer guidelines when installing bolt-on breakers. Use the exact part number EJB24125 for compatibility, and replace in matched pairs if your system requires synchronized protection across poles.