The high density DIN rail mount single pole AC circuit breaker is a hydraulic magnetic breaker rated at 3 amp 240V. The UL 1077 supplemental protection circuit breaker is 300% factory tested to quality and reliability. The high density circuit breaker is 13 mm per pole and saves over 25% of space on your DIN rail compared to a 18 mm circuit breaker. The NDB5 circuit breaker features easy to wire screw clamp connections and mounts on the industry standard 35 mm DIN rail. The NDB5 series of circuit breakers can be used in most industrial applications since this model features general purpose trip curve characteristics.