Industrial CDA-R Cable Limiter 600V Rated 500MCM

Industrial CDA-R Cable Limiter 600V rated 500 MCM is a Bussmann-series low-voltage protection device designed to rapidly isolate faulted service conductors in installations with multiple parallel cables per phase. This 600 V cable limiter is specified for conductor sizes up to 500 kcmil (500 MCM) and is intended to protect the integrity of the remaining feeders during a short circuit, helping minimize damage to wiring and equipment. Cable limiters like the CDA-R do not provide overload protection and therefore lack an ampere rating; they are chosen for the cable size to be protected rather than for continuous current carrying capacity. Typical applications include commercial and industrial power-distribution networks where several parallel service cables exist, such as 120/208 V, 277/480 V systems, and they are installed in equipment or enclosures to suit various termination configurations for copper or aluminum conductors. This part aligns with Bussmann’s broader line of 600 V cable limiters, which are designed to interrupt fault currents and protect downstream cables while allowing unaffected conductors to remain energized.