Square D FA14020B is a 20-amp, 1-pole molded-case circuit breaker from the FA family designed for I-Line panelboard installations. It is rated for 120/240 VAC service and 480Y/277 VAC service, with a 125 VDC rating for control circuits, and provides thermal-magnetic overcurrent protection. This FA14020B uses line-side I-Line connections and accepts 14-4 AWG aluminum or copper conductors on the load side. Its short-circuit interrupting ratings reach 25 kA at 120/240 VAC and 18 kA at 480Y/277 VAC.
