{"product_id":"square-d-9013fhg42j59x-air-compressor-pressure-switch","title":"Square D 9013FHG42J59X Air Compressor Pressure Switch","description":"\u003cdiv\u003e\u003cp\u003eThe Square D by Schneider Electric 9013FHG42J59X Pumptrol pressure switch is a DPST, electromechanical control for air compressors with an integrated unloader valve to vent the pump when the switch opens. It is factory-set for a 135 psi on-set and 175 psi off-set, delivering a fixed 40 psi differential, and features a 1\/4 in NPSF internal port for piping. The unit includes a two‑way release\/unloader valve and is part of the Square D Pumptrol family, designed for standard 1\/4 in NPSF connections in air-compressor control systems. This switch is used to automatically start and stop a compressor to maintain target tank pressure while easing start-up and reducing motor stress during shut-off.\u003c\/p\u003e\u003c\/div\u003e","brand":"Square","offers":[{"title":"New","offer_id":46253927170282,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/8039\/3450\/files\/GTG-STOCK-011.png?v=1788727428","url":"https:\/\/gtghardware.com\/products\/square-d-9013fhg42j59x-air-compressor-pressure-switch","provider":"GTG Hardware","version":"1.0","type":"link"}