CEFCON CRS-R-500 Molded Case Circuit Breaker RK5

CEFCON CRS-R-500 is a 500 A, 600 V current‑limiting fuse in the RK5 class, designed for high‑current protection in low‑voltage electrical distributions. This time‑delay device is used in industrial switchgear, panelboards, and motor‑control centers to interrupt fault currents while accommodating normal operating surges, helping protect downstream equipment from damage. As part of the CRS‑R family, the CRS‑R‑500 requires an RK5‑type fuse holder or block compatible with Class RK5 devices. The 600 V rating defines its maximum operating voltage, while the 500 A rating specifies the nominal current it is intended to protect. Typical applications include feeders and distribution components in industrial facilities where reliable short‑circuit protection is essential, and where limiting fault energy is important for upstream conductors and equipment. For exact compatibility, verify the Cefcon CRS‑R‑500 with your equipment’s fuse holder specification and system documentation to ensure proper fit and protection.