Square D CHOM2150BB - 150 A, 240 V, 2-Pole Plug-In Circuit Breaker | AmpState

Protect critical electrical circuits with a dependable, fast-to-install solution from Square D. The CHOM2150BB is a 150A, 240V, 2-pole plug-in molded case circuit breaker designed to deliver reliable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Ideal for residential, commercial, and light industrial installations, this unit is a practical upgrade for safer, simpler panel maintenance performed by professionals and capable DIY installers alike.

Fast, plug-in installation

Designed for rapid swaps and minimal downtime, the CHOM2150BB uses a straightforward plug-in connection that snaps into compatible Square D panelboards. No screws or complex wiring are required, so installation or replacement is straightforward, reducing service interruptions and keeping your electrical system up and running smoothly.

Thermal-magnetic protection for stable, repeatable trips

The integrated thermal-magnetic trip unit provides two-tier protection: a calibrated thermal element responds to normal overloads, while magnetic action delivers immediate disconnection on a confirmed short circuit. The result is stable, repeatable protection that helps safeguard wiring, devices, and connected equipment from damage and nuisance trips caused by minor surges.

Technical snapshot

• Manufacturer: Square D
• Part number: CHOM2150BB
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 150A
• Voltage rating: 240V
• Poles: 2
• Mounting style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Why choose this CHOM2150BB over other options

This plug-in, two-pole design prioritizes ease of maintenance and quick restoration of service. By combining a robust 150A rating with a 240V supply, it is well-suited to protect main feeders and critical branch circuits in panelboards and load centers. The thermal-magnetic protection mechanism reduces the likelihood of nuisance trips from normal inrush or short-term spikes, while the plug-in format simplifies future replacements or upgrades without extended downtime.

Ideal use cases

• Upgrading or maintaining residential panelboards that demand reliable 150A protection for heavy circuits
• Commercial electrical panels supplying HVAC, pumps, or other high-demand equipment
• Light industrial enclosures where fast serviceability and durable protection are priorities

Installation and compatibility tips

Ensure you’re selecting a matching OEM load center or panelboard compatible with CH series plug-in breakers. Follow standard safety practices: power down, verify there is no voltage present, and refer to the panel’s installation guide to confirm fit and torque requirements. When in doubt, rely on a licensed electrician to complete the swap for optimal performance and safety.