B150 - Siemens - 50 Amp Circuit Breaker Condition:New BR270 is a 2 pole

BR270 is a 2 pole

QO1520 - Square D 15A/20A Tandem Breaker

trip free toggle mechanism with quick make

For example

BR215 is a 2 pole

B150 - Siemens - 50 Amp Circuit Breaker Condition:New BR270 is a 2 poleB150 Siemens 50 Amp Single Pole Bolt On Circuit Breaker The Siemens BL Bolt On Circuit Breaker is a panel board mounted, non interchangeable trip molded case Bolt On Circuit Breaker. Specifications: Manufacturer : Siemens Family : B BL Series Cat. No. : B150 1 Pole 50 Amp 120 Volt Connection : Bolt On Phase : 1 Interrupting Rating 10000 Ampere Dimensions (H x W x L): 3. 5" x 1" x 3" Authentic Siemens Product CSA Approved and UL Listed