The JS-551 is an enclosed switch featuring a DPST-NO contact arrangement. It is rated for 28 VDC with a 0.75A inductive load and requires an actuating force between 7 and 11 lbs. This switch is sealed per MIL-PRF-8805, Symbol 1 standards, ensuring reliable performance in harsh conditions. It is designed to operate over a temperature range of -40°C to +85°C, making it suitable for a variety of industrial and military applications where durability is critical.