Square D 480V - 100A, 3-Pole, Circuit Breaker

The Square D 480V 100A 3-Pole Circuit Breaker is engineered to protect three-phase electrical systems with precision. With a 100-amp rating and a 3-pole configuration, this breaker provides reliable overcurrent protection for feeders, motor circuits, and control elements across industrial, commercial, and OEM applications. Designed for panelboards, switchboards, and control panels, it integrates into existing Square D or compatible infrastructure for straightforward installation and safe operation.

Why this 3-Pole 480V breaker stands out

• Three-phase protection in a compact package: 3-pole design ensures all phases trip together, reducing the risk of phase unbalance and providing clean, simultaneous disconnect.
• Robust 100A protection: Perfect for feeders and motor circuits where overloads and short circuits must be reliably intercepted without unnecessary interruptions.
• Versatile integration: Built for panelboards, switchboards, and control panels, making it an ideal replacement or upgrade in MCCs and distribution centers.
• OEM-ready durability: Suitable for OEM assemblies that demand dependable, long-term protection in demanding environments.

Key applications and use cases

• Industrial facilities and manufacturing lines that rely on reliable motor control centers (MCCs) and distribution panels.
• Commercial equipment where robust protective devices minimize downtime and protect critical loads.
• OEM projects requiring a standard, readily available 3-pole breaker for 480V systems.

How it helps you run smarter

• Simple, secure installation into compatible Square D panelboards or switchboards reduces commissioning time and ensures proper fitment.
• Clear labeling and consistent performance across environments support safer operation and easier maintenance checks.
• Peace of mind from dependable overcurrent protection that aligns with your 480V three-phase power distribution strategy.

Tips for installation and maintenance

• Confirm your system voltage is 480V and that the circuit breaker slot matches a 3-pole configuration.
• Inspect wiring conformity and torque to the panel’s mounting hardware as you would with any heavy-duty protective device.
• If the breaker trips, assess the load current against the 100A rating, inspect the wiring for shorts or overloads, and verify motor startup loads are within safe limits.

Frequency and reliability you can count on

• Designed for industrial, commercial, and OEM environments where dependable protection and safe operation are critical in distribution panels and motor control centers.