The Siemens BQD220 is a two-pole, 20 A bolt-on molded-case circuit breaker designed for reliable overcurrent protection in commercial and light-industrial power-distribution systems operating at 480Y/277 VAC (50/60 Hz), with a 14 kA interrupting rating. It mounts bolt-on to Siemens P1–P5 panelboards and uses load-lug terminals for secure conductor connection in compact installations. Electrical ratings include 20 A at 40°C, 480Y/277 VAC (50/60 Hz), and 125/250 VDC, meeting UL and CSA certification requirements. Physical size is 2 in wide by 2.7 in deep by 4.49 in high and the frame is BQD.
