BEP Marine CSP6-PTC switch panel. This panel utilises the latest technology in overload protection - Positive Temperature Coefficient (PTC). PTC fuses are solid state resettable fuses which will change to a high resistance device on over-current. To reset: switch circuit off for 10 seconds. If fault remains the PTC will trip back to a resistive state. The CSP6-PTC provides 6 switches with 6x9A PTC fuses mounted internally in the panel. Red LED for system “ON”. Removable cover conceals screws and water drain. Dimension 158x112x75 mm.