Eaton / Cutler-Hammer BR330 Miniature Circuit Breaker

Yes. Eaton acquired these legacy brands, and the Type BR line is the official, UL approved direct replacement for Challenger Type C, Westinghouse Type BR, and Bryant Type BR load centers.

The BR330 requires three standard one-inch spaces on the panel bus bar, taking up three inches of total width inside the load center.

No. The BR330 is manufactured specifically for 3-phase electrical systems. It will not correctly fit or function in a standard 120/240V single-phase residential load center.

This unit serves as the exact cross-reference replacement for the discontinued Bryant BR330, Westinghouse BR330, and Challenger C330 circuit breakers.

The thermal mechanism features a Long-Time delay to prevent tripping during temporary motor inrush currents, while the magnetic Instantaneous mechanism trips immediately during a dead short circuit to protect your wiring.

If a fault or overload occurs on any of the three connected phases, the common trip mechanism ensures all three poles disconnect simultaneously. This prevents the dangerous condition of single-phasing a 3-phase motor or load.

You must follow the exact torque specifications printed directly on the breaker label, as they vary depending on the wire gauge and material you are using. Using a calibrated torque tool is required to ensure a safe, code-compliant connection.