{"product_id":"allen-bradley-836-c9-style-c-pressure-control-switch","title":"Allen-Bradley 836-C9 Style C Pressure Control Switch","description":"\u003ch2\u003eAllen-Bradley 836-C9 Style C Pressure Control Switch\u003c\/h2\u003e\n\u003cp\u003eConfigured for pressure-actuated pilot circuit switching, the \u003cstrong\u003eAllen-Bradley 836-C9\u003c\/strong\u003e (\u003cstrong\u003e836-C9\u003c\/strong\u003e pressure control switch) monitors pneumatic or hydraulic pressure through a copper alloy bellows and SPDT snap-action contacts. The device provides an adjustable operating range of 35 to 375 psi with a maximum line pressure of 900 psi.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e836-C9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Series\u003c\/td\u003e\n\u003ctd\u003eBulletin 836 Style C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003ePressure Control Switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.65 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Range\u003c\/td\u003e\n\u003ctd\u003e35 to 375 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Line \/ Working Pressure\u003c\/td\u003e\n\u003ctd\u003e900 psi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActuator Element\u003c\/td\u003e\n\u003ctd\u003eCopper alloy bellows\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePressure Port\u003c\/td\u003e\n\u003ctd\u003e1\/4 inch NPT female\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Configuration\u003c\/td\u003e\n\u003ctd\u003eSPDT snap-action block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical Rating\u003c\/td\u003e\n\u003ctd\u003e5 A at 240 VAC pilot duty; 3 A at 600 VAC pilot duty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure\u003c\/td\u003e\n\u003ctd\u003eOpen \/ NEMA Type 1 general-purpose, depending on housing sub-suffix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDifferential Adjustment\u003c\/td\u003e\n\u003ctd\u003eAdjustable through calibration wheel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMedia\u003c\/td\u003e\n\u003ctd\u003eAir, water, oil, and non-corrosive liquids or gases\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eElectromechanical Pressure Switching Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe 836-C9 uses an external copper alloy bellows to convert applied pressure into mechanical contact movement. The pressure element operates the SPDT snap-action contact block when the configured pressure threshold is reached.\u003c\/p\u003e\n\u003cp\u003eThe operating range is specified from 35 to 375 psi, while the maximum line pressure is rated at 900 psi. Differential adjustment is performed through the calibration wheel identified as 836C9 in the supplied documentation.\u003c\/p\u003e\n\u003cp\u003eThe 1\/4 inch NPT female pressure port provides the mechanical interface between the monitored pressure circuit and the bellows assembly. Contact output is provided through an SPDT arrangement for pilot-duty control circuits.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003eQ: Is the 836-C9 a solid-state pressure transmitter?\u003c\/p\u003e\n\u003cp\u003eA: No. The 836-C9 is an electromechanical pressure control switch using a copper alloy bellows and snap-action contacts.\u003c\/p\u003e\n\u003cp\u003eQ: What electrical load can the contact block switch?\u003c\/p\u003e\n\u003cp\u003eA: The supplied specification lists 5 A at 240 VAC and 3 A at 600 VAC for pilot-duty operation.\u003c\/p\u003e\n\u003cp\u003eQ: Can the pressure differential be adjusted?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The supplied data identifies an adjustable differential setting using the calibration wheel.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVerify that the pressure source remains within the specified 35 to 375 psi operating range during normal operation.\u003c\/li\u003e\n\u003cli\u003eConfirm that the connected pressure circuit cannot exceed the stated 900 psi maximum line pressure.\u003c\/li\u003e\n\u003cli\u003eMatch the installed pressure fitting to the 1\/4 inch NPT female port without applying excessive mechanical torque.\u003c\/li\u003e\n\u003cli\u003eUse compatible sealing practices for the monitored medium and maintain a leak-free pressure connection.\u003c\/li\u003e\n\u003cli\u003eKeep pressure tubing mechanically supported to prevent vibration or external loading from reaching the bellows assembly.\u003c\/li\u003e\n\u003cli\u003eRoute control wiring separately from high-energy conductors where practical to reduce electrical interference.\u003c\/li\u003e\n\u003cli\u003eConnect the SPDT contacts according to the required normally open or normally closed control logic.\u003c\/li\u003e\n\u003cli\u003eVerify the connected load against the specified pilot-duty contact ratings before energizing the circuit.\u003c\/li\u003e\n\u003cli\u003eConfirm the enclosure configuration and environmental suitability before installation in the intended panel or machinery location.\u003c\/li\u003e\n\u003cli\u003ePerform pressure switching verification after installation by gradually changing applied pressure and observing the contact transition.\u003c\/li\u003e\n\u003cli\u003eAdjust the differential only through the designated calibration mechanism and verify the resulting switching points against the required control sequence.\u003c\/li\u003e\n\u003cli\u003eDo not apply electrical power to the switch as a substitute for mechanical pressure verification.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AMPHENOL","offers":[{"title":"Default Title","offer_id":43919231025242,"sku":"836-C9","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/836-C92.jpg?v=1787817425","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-836-c9-style-c-pressure-control-switch","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}