Product details:

The BQD type circuit breakers are 1-Inch pole configurations and are available in 1, 2, or 3 pole construction. Voltage ratings of 120, 240, 277, and 480/277V AC are available. The BQD breaker is intended for panel board mounting. Siemens strongly recommends against the use of "used" breakers. Siemens does not sell used breakers and has not approved any 3rd party sellers to do so.