Eaton / Cutler-Hammer QBHW2100S Miniature Circuit Breaker

No, the QBHW2100S is a bolt-on circuit breaker designed specifically for commercial and industrial Eaton Pow-R-Line and legacy Westinghouse panelboards. It is not compatible with standard plug-on residential load centers.

The "S" suffix signifies that this breaker includes a factory-installed shunt trip. This accessory allows the breaker to be opened remotely using an external voltage signal, which is commonly required for emergency stop systems or remote equipment shutdown.

This breaker features a bolt-on mounting style, meaning it physically bolts directly to the panelboard busbar. This provides a secure, vibration-resistant connection typically required in commercial and industrial environments.

Yes, the box lug terminals are rated for both copper (Cu) and aluminum (Al) conductors. They accept wire sizes ranging from 8 AWG up to 1/0 AWG.

Yes. Eaton acquired Cutler-Hammer and continues to manufacture the Quicklag series under the Eaton brand. The QBHW2100S catalog number remains identical, and breakers labeled with either brand are fully interchangeable.

Both breakers share the same physical Quicklag-B frame and bolt-on mounting style. The primary difference is their interrupting capacity. The BAB series is rated at 10 kAIC, while the QBHW series is rated at 22 kAIC for applications requiring a higher fault current rating.

Yes, like all Eaton Quicklag breakers in the 15A to 100A range, the QBHW2100S is HACR rated. This makes it suitable for use with heating, air conditioning, and refrigeration equipment.

No, this breaker features a fixed thermal-magnetic trip unit. It provides non-adjustable long-time overload and instantaneous short-circuit protection.