Molded Case Circuit Breakers: A1N070TW-2; A1N080TW-2 etc ABB’s FORMULA molded case circuit breaker line offers simplicity and quality in some of the smallest dimensions available. The FORMULA A1 breaker frame size ranges in amperes from 15 through 100 with protection trip units that have fixed thermal and magnetic threshold values. The frame is available in a fixed version with front terminals. Current Rating: 70A Mounting Type: Chassis, Rear Mount Number of Poles: 2 Type: Thermal/Magnetic Voltage Rating: 240V