Asi Ndb2T-63C6-1L Din Rail Mount Circuit Breaker, Ul489 Branch Circuit The ASI NDB2T-63C6-1L standard DIN rail mount single pole AC circuit breaker is a thermal magnetic breaker rated at 6 amp, 240V. The UL489 branch 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 NDB2T series of circuit breakers can be used in most industrial applications and are an ideal drop-in replacement to existing branch circuit breakers. The NDB2T-63C6-1L uses the general purpose C curve trip characteristics. UL489 Listed for branch circuit protection Reliable screw clamp wire terminations Visual trip indicator for quick troubleshooting 300% Factory tested to reliability DIN rail mount for easy installation