1393139-5 is a specialty rotary relay from the MDR Series, designed for demanding shock and vibration applications per MIL-S-901. The MDR Series offers AC and DC coils in both latching and non-latching configurations, with contact arrangements ranging from 4PDT through 24PDT. Contact ratings include 10 A at 115 VAC and 3 A at 28 VDC for single contacts, with an operating temperature range of 0°F to +149°F (0°C to +65°C) for standard models. The relay features #5-40 screw terminals and is engineered to withstand high impact shock, making it suitable for military, aerospace, and industrial applications requiring reliable switching under severe environmental conditions.