The ASI NDB2-63C20-2 standard DIN rail mount two pole AC Circuit Breaker is a thermal magnetic breaker rated at 20 amp, 240/480V. The UL 1077 supplemental protection circuit breaker is 300 % factory tested to quality and reliability. The circuit breaker features visual trip indication, easy to wire screw clamp connections and mounts on the industry standard 35 mm DIN rail. The NDB2 series of circuit breakers can be used in most industrial applications and are an ideal drop-in replacement to existing supplemental circuit breakers. The NDB2-63C20-2 uses the general purpose C curve trip characteristics which is instantaneous trip 5In to 10In. Matching accessories are available including auxiliary contact, alarm contact and bus bars.