Eaton / Cutler-Hammer QBHW2070 Miniature Circuit Breaker

This bolt-on breaker is designed for Eaton Pow-R-Line panelboards, including the PRL1a, PRL2a, PRL1X, and PRL2X series. It is also backward compatible with many legacy Westinghouse panels, such as the W22B series.

Both are 70A, 2-pole Quicklag bolt-on breakers with identical physical dimensions. The difference is the interrupting rating. The BAB2070 is rated for 10kAIC, while the QBHW2070 is rated for 22kAIC to safely clear higher fault currents.

The QBHW2070 is required when the available fault current at the panel exceeds 10,000 amps. Its 22kAIC rating ensures it can safely interrupt higher fault currents without sustaining catastrophic damage, which is common in commercial and industrial electrical systems.

Yes, this breaker is HACR rated. It is approved for use with heating, air conditioning, and refrigeration equipment that requires a 70A, 2-pole circuit.

No, the QBHW2070 features a bolt-on connection type. It must be securely bolted to the busbar of a commercial panelboard and is not compatible with standard plug-on residential load centers.

No, the QBHW2070 is a standard thermal-magnetic breaker providing overload and short-circuit protection. It does not include GFCI or AFCI capabilities.

Yes, Eaton acquired the Cutler-Hammer and Westinghouse breaker lines. The modern Eaton QBHW2070 is a direct, manufacturer-approved replacement for older Westinghouse or Cutler-Hammer breakers with the exact same catalog number.