{"product_id":"wika-model-pca-compact-pressure-switch","title":"WIKA Model PCA Compact pressure switch","description":"\u003cp\u003eThe \u003cstrong\u003eWIKA PCA\u003c\/strong\u003e is a compact mechanical pressure switch designed for the process industry, featuring a robust flameproof enclosure (Ex d) and reliable switch contact performance without requiring an external power supply. It’s built for harsh environments and safety-critical applications where space is limited.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTypical Applications:\u003c\/strong\u003e\u003cbr\u003e• Pressure monitoring and control in chemical, petrochemical and oil \u0026amp; gas processes\u003cbr\u003e• Hydraulic and pneumatic systems requiring automatic switching\u003cbr\u003e• Water\/wastewater and power generation instrumentation\u003cbr\u003e• Industrial machinery with limited installation space\u003cbr\u003e• Safety shut-off and alarm activation based on pressure thresholds\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot Recommended For:\u003c\/strong\u003e\u003cbr\u003e• Continuous analog pressure measurement (use an electronic sensor instead)\u003cbr\u003e• Applications needing advanced digital outputs or remote diagnostics\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.wika.com\/media\/Data-sheets\/Pressure\/Pressure-switches\/ds_pv3331_en_co.pdf\"\u003eModel PCA Data sheets\u003c\/a\u003e\u003c\/p\u003e\n\u003csection\u003e\n\u003ch2\u003e\u003cstrong\u003eSelection Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e• Confirm your required pressure range and media type before selection\u003cbr\u003e• Check whether explosion-proof enclosure (Ex d) is required for your site\u003cbr\u003e• Choose contact configuration: SPDT or DPDT for single or dual circuit control\u003cbr\u003e• Suitable for both liquid and gaseous media, including aggressive or contaminated fluids\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhy Choose the WIKA PCA Compact Pressure Switch\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e• \u003cstrong\u003eMechanical Switching Without External Power:\u003c\/strong\u003e No supply voltage needed to switch electrical loads up to AC 250 V, 15 A directly — ideal for simple control circuits. \u003cbr\u003e• \u003cstrong\u003eRobust Flameproof Enclosure (Ex d):\u003c\/strong\u003e Aluminium alloy or stainless steel housing with IP66 \/ NEMA 4X protects in rough industrial environments. \u003cbr\u003e• \u003cstrong\u003eWide Setting Range:\u003c\/strong\u003e Available from low to high pressures (starting from around 0.2 … 1.2 up to 1 000 bar, plus vacuum versions). \u003cbr\u003e• \u003cstrong\u003eReliable Performance:\u003c\/strong\u003e Repeatability of set point ≤ 1 % of span with diaphragm + antagonist spring sensor design. \u003cbr\u003e• \u003cstrong\u003eFlexible Contact Options:\u003c\/strong\u003e Single set point with SPDT or DPDT options for single or dual circuit switching. \u003cbr\u003e• \u003cstrong\u003eSafety-Critical Applications:\u003c\/strong\u003e Can be supplied with SIL 2 or SIL 3 qualification for certain safety functions.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eQ: \u003cem\u003eDoes the PCA require a separate power supply for switching?\u003c\/em\u003e\u003cbr\u003eA: No — the PCA’s mechanical micro switch can directly switch electrical loads up to AC 250 V, 15 A without external power.\u003c\/p\u003e\n\u003cp\u003eQ: \u003cem\u003eIs the PCA suitable for aggressive or contaminated media?\u003c\/em\u003e\u003cbr\u003eA: Yes — the PCA is designed for gaseous and liquid, aggressive, highly viscous or contaminated media and aggressive ambient conditions.\u003c\/p\u003e\n\u003cp\u003eQ: \u003cem\u003eWhat enclosure protection does PCA have?\u003c\/em\u003e\u003cbr\u003eA: It features a robust flameproof Ex d enclosure with IP66 \/ NEMA 4X protection for harsh industrial environments.\u003c\/p\u003e\n\u003cp\u003eQ: \u003cem\u003eCan I use the PCA in hazardous areas?\u003c\/em\u003e\u003cbr\u003eA: Yes — Ex d enclosure makes it suitable for many hazardous locations; consult WIKA for specific certification needs (e.g., IECEx\/ATEX).\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n\u003cdiv class=\"columns\"\u003e \u003c\/div\u003e\n\u003c\/section\u003e","brand":"WIKA","offers":[{"title":"Default Title","offer_id":43411481460797,"sku":null,"price":120.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/4141\/3693\/files\/wika-pca-compact-pressure-switch.webp?v=1785465481","url":"https:\/\/proinstru.com\/products\/wika-model-pca-compact-pressure-switch","provider":"Process Instrument","version":"1.0","type":"link"}