Eaton / Cutler-Hammer QBHW3020H Miniature Circuit Breaker

No. This breaker is designed exclusively for commercial Eaton Pow-R-Line panelboards that accept bolt-on Quicklag breakers. It cannot be installed in standard residential plug-on load centers like the Eaton BR or CH series.

Both are Quicklag bolt-on breakers with identical physical dimensions, but they carry different short-circuit interrupting ratings. BAB breakers are rated at 10kAIC, while QBHW breakers provide a higher 22kAIC rating.

Yes. Because the QBHW3020H shares the same form factor and offers a higher interrupting rating (22kAIC) than the BAB3020 (10kAIC), it can safely be used as a direct replacement or upgrade in the same panelboard, provided all other specifications match the application.

Yes. The 240V AC maximum voltage rating allows the QBHW3020H to be safely applied on 208Y/120V three-phase systems, which is a common application in commercial facilities.

Yes, this breaker is HACR rated. It is approved for use with heating, air conditioning, and refrigeration equipment that requires circuit protection with this specific safety designation.

No. This is a bolt-on breaker that fastens directly to the bus bar of an Eaton Pow-R-Line panelboard using screws. It does not mount to a DIN rail or use a plug-on connection.

The LI designation means the breaker features Long-Time and Instantaneous trip functions. The thermal long-time element protects against sustained overloads, while the magnetic instantaneous element trips immediately during a short circuit.