{"product_id":"h100-702-united-electric-pressure-switch-new-original-stock","title":"H100-702 United Electric Pressure Switch | New \u0026 Original Stock","description":"\u003ch2\u003eUnited Electric H100-702 H100 Series Pressure Switch\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eUnited Electric H100-702\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eH100-702\u003c\/strong\u003e Pressure Switch, operates as a dedicated hardware component for binary pressure threshold detection within industrial fluid and gas process loops. Configured for low-pressure sensing, the assembly converts physical process pressure against a diaphragm into mechanical force to actuate a single-pole double-throw switch element.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"1\"\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd data-row=\"1\"\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"2\"\u003eModel\u003c\/td\u003e\n\u003ctd data-row=\"2\"\u003eH100-702\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"3\"\u003eBrand\u003c\/td\u003e\n\u003ctd data-row=\"3\"\u003eUnited Electric Controls (UE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"4\"\u003eOrigin\u003c\/td\u003e\n\u003ctd data-row=\"4\"\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"5\"\u003eWeight\u003c\/td\u003e\n\u003ctd data-row=\"5\"\u003e0.79 kg (1.75 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"6\"\u003eDimensions\u003c\/td\u003e\n\u003ctd data-row=\"6\"\u003eStandard H100 series housing parameters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"7\"\u003eOperating Temp\u003c\/td\u003e\n\u003ctd data-row=\"7\"\u003e-40 to +121 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"8\"\u003ePower Consumption\u003c\/td\u003e\n\u003ctd data-row=\"8\"\u003e0 W (purely mechanical actuation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"9\"\u003eAdjustable Range\u003c\/td\u003e\n\u003ctd data-row=\"9\"\u003e3 to 100 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"10\"\u003eOverrange Pressure\u003c\/td\u003e\n\u003ctd data-row=\"10\"\u003e500 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"11\"\u003eProof Pressure\u003c\/td\u003e\n\u003ctd data-row=\"11\"\u003e600 PSI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"12\"\u003eProcess Connection\u003c\/td\u003e\n\u003ctd data-row=\"12\"\u003e1\/4 in NPTF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"13\"\u003eSwitch Type\u003c\/td\u003e\n\u003ctd data-row=\"13\"\u003eSPDT (Single-Pole Double-Throw)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"14\"\u003eContact Rating\u003c\/td\u003e\n\u003ctd data-row=\"14\"\u003e15 A at 125\/250\/480 VAC; 25 A at 120\/240 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"15\"\u003eWetted Materials\u003c\/td\u003e\n\u003ctd data-row=\"15\"\u003eBuna-N diaphragm and O-ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-row=\"16\"\u003eEnclosure Rating\u003c\/td\u003e\n\u003ctd data-row=\"16\"\u003eEpoxy-coated die-cast aluminum, NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eProcess Control and DCS Instrument Loop Integration\u003c\/h3\u003e\n\u003cp\u003eThe mechanical switch housing integrates into remote automated infrastructures through a single SPDT dry contact circuit, ensuring complete channel-to-channel isolation from adjacent instrumentation lines. When wired to a host Distributed Control System (DCS) digital input card, the contact interface forms a dedicated loop that prevents voltage propagation between non-isolated instrumentation grounds. The physical separation of the internal snap-action mechanism isolates high-voltage AC or low-voltage DC signals from the local process boundary, minimizing electrical noise induction during threshold state transition events.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How is the process loop protected against variable contact chattering during marginal pressure transitions near the setpoint?\u003c\/p\u003e\n\u003cp\u003eA: The hardware features a fixed mechanical deadband spanning 1 to 4 PSI. This physical hysteresis prevents repetitive contact state toggling when the process line pressure dwells or fluctuates marginally near the designated 3 to 100 PSI trip threshold.\u003c\/p\u003e\n\u003cp\u003eQ: Does the 14-pin internal block support external voltage supply line termination for loop monitoring?\u003c\/p\u003e\n\u003cp\u003eA: No. The H100-702 is a purely mechanical switch that requires no loop power or external supply voltage for internal operation. The physical terminals interface exclusively with the dry contacts of the SPDT switch block.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Port Engagement:\u003c\/strong\u003e Apply industrial-grade thread sealant to the 1\/4 in NPTF male process pipe. Thread the fitting into the instrument body ensuring a minimum of 5 full threads of engagement to maintain process boundary integrity up to the rated 500 PSI overrange threshold.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical Setpoint Stabilization:\u003c\/strong\u003e Adjust the internal setpoint using the mechanical mechanism under calibrated line pressure. Once set, verify that the tamper-resistant setpoint lock is completely engaged to prevent calibration drift caused by compressor or pump physical vibration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConduit and Moisture Isolation:\u003c\/strong\u003e Position the electrical conduit entry downward during vertical or horizontal surface installation. This physical orientation prevents moisture condensation from collecting inside the enclosure on the dry contact terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Grounding Protocol:\u003c\/strong\u003e Connect an external bonding conductor from the local protective earth grounding network directly to the enclosure ground terminal, ensuring a low-impedance path to earth.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":43412171063386,"sku":"H100-702","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/143._251289f6-3a93-440e-91fa-6dc7ebf3cd2e.jpg?v=1779672678","url":"https:\/\/www.spareoil.com\/products\/h100-702-united-electric-pressure-switch-new-original-stock","provider":"SpareOil Automation","version":"1.0","type":"link"}