SPDT Form C Contact Configuration, Diaphragm-Actuated Vacuum Control Mechanism, Open-Chassis General Purpose Layout, 240VAC/VDC System Maximum, -30°C to +85°C Industrial Operational Window, Screw Terminal Interface | Commercial-grade mechanical vacuum control switch switch manufactured by Square D (Schneider Electric) utilizing a high-flexibility fluorosilicone diaphragm sensor core and double-break silver alloy contact pads, optimized to execute rapid differential pressure logic transitions and manage stable vacuum regulation loops inside commercial heating, ventilation, and industrial air compressor mainframes | Industry Exact Equivalents: Square D 9016BSG1, Schneider Electric 9016BSG1, Square D 9016BSG-1 | Industry Functional Cross-References: Honeywell Micro Switch 2V1, Furnas 69V1, United Electric J6-218 | Military Specification National Stock Number (NSN): 5930-00-539-0116