Metal Enclosure Firmly, resistance to impact, protection against fire, resistance to corrosion, rust. 2. NEMA 5-15R Duplex Receptacles. 3. 15 amp Resettable Overcurrent Protective Device. The protector shall automatically shut off power when the current which current exceed rated current past through the device or the device occurred fault. Push the resettable button after solving the fault, then can use it again as normal. 4. Strain Relief Bushing Prevent against the cable displacement. Application This device only suitable for use with medical device. Use it in dry location or environment.