4PIN Balanced Magnetic Armature Framework, 2 Pole Double Throw (2PDT) Form C Contact Configuration, High-Reliability Hermetically Sealed Power Relay Module, 10A Continuous Current Rating, 28VDC/115VAC System Threshold, -65°C to +125°C Extended Aerospace Operational Window | High-performance subminiature aerospace-grade military relay module manufactured by Leach Corporationfeaturing dual-coil balanced armature mechanics, an internal gas-purged welded metal enclosure, and heavy-duty alloy contacts, explicitly engineered to isolate critical control logic loops and prevent localized arc tracking or contact bounce across high-vibration avionics hulls and missile guidance telemetry decks | Industry Exact Equivalents: Leach 7902331-2, Leach 79023312, Leach Series M200 | Industry Functional Cross-References: Babcock BR6-20D-28V, Struthers-Dunn FC-210-5, Teledyne J422-28 | Military Specification National Stock Number (NSN): 5945-01-023-3102