Molded Case Circuit Breakers Panelboard Mounting 240V Circuit Breakers - Type BL, 2-Pole, 120/240VAC are Circuit Protection Molded Case Circuit Breakers. Dimensions (L x W x H) IN: 3 x 3 x 1. Type BL for electrical distribution applications. Meets stds: UL 489. Rated 120V (20A). Connector: bolt-on. (AIR 65 AIC). No special features listed.