Square D QBM22100TN 100A 2-Pole 240 V Circuit Breaker

Power reliability starts with precise overcurrent protection. The Square D QBM22100TN 100A 2-Pole 240 V Circuit Breaker is built to safeguard your 240V circuits from overloads and short circuits, delivering dependable performance in compatible panels.

What it does

This two-pole breaker disconnects both hot legs at the same time, helping prevent shock hazards and equipment damage when a fault occurs. Designed for 240V circuits, it provides clear, immediate protection for essential appliances and distribution feeders in residential and light commercial installations.

Key specifications

• Brand: Square D
• Part number: QBM22100TN
• Current rating: 100 A
• Poles: 2
• Voltage rating: 240 V

Ideal use scenarios

• Protecting 240V circuit feeders in residential or light commercial panels that require a 2-pole 100A breaker
• Serving as a reliable main or feeder protection where two hot legs must be switched off together
• Replacing an existing 2-pole breaker with a compatible Square D device to maintain system consistency

Why this two-pole design matters

With a two-pole configuration, both live conductors are switched off simultaneously. This reduces the risk of stray voltage on residual circuits, enhances safety during maintenance, and simplifies compliance with electrical code requirements for 240V circuits.

Practical considerations & tips

• Ensure compatibility with your panel’s model and labeling. This device is designed for Square D installations and should be matched to the appropriate panel type and rating.
• Follow installation torque specifications and local electrical codes. If you’re replacing an old breaker, verify the replacement matches the existing bus bar style and mounting method.
• Inspect conductors and connections during replacement. Tighten lugs to the manufacturer’s recommended torque to maintain reliable protection.
• Use this 100A, 2-pole breaker to protect feeders and circuits that require robust current handling while maintaining safe shutdown on fault detection.

Choosing the Square D QBM22100TN means selecting a trusted, purpose-built solution for safeguarding your 240V circuits with precise, dependable performance. If you’re upgrading or stocking spare parts for your electrical panel, this 100 A, 2-Pole 240 V circuit breaker delivers clear protection and peace of mind for everyday electrical loads.