{"product_id":"mcdonnell-miller-110300-model-5-reset-snap-switch","title":"McDonnell \u0026 Miller 110300 Model 5 Reset Snap Switch","description":"\u003cp\u003eThe reset snap switch provides an immediate pressure release to protect boiler systems from over‑pressure conditions, helping maintain safe operation and extend equipment life. This **110300** unit is the **Model 5** replacement designed for McDonnell \u0026amp; Miller boilers.\u003c\/p\u003e\u003cp\u003eWhen system pressure exceeds the preset limit, the internal spring‑loaded mechanism trips, opening the circuit and venting excess pressure. After the fault clears, the switch can be manually reset, restoring normal function.\u003c\/p\u003e\u003ch4\u003eKey System Performance Baselines:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Rating:\u003c\/strong\u003e Rated for up to 250 psi, matching original specifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset Action:\u003c\/strong\u003e Manual snap‑back reset ensures quick restoration after a trip.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct drop‑in replacement for Model 5 boiler control panels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Rating:\u003c\/strong\u003e 120 V AC, 5 A coil for reliable actuation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e🚨 \u003cstrong\u003eApplication Profile:\u003c\/strong\u003e Ideal for commercial and industrial boiler systems, including hot‑water heating, steam generation, and process heating units where over‑pressure protection is required.\u003c\/p\u003e","brand":"McDonnell \u0026 Miller","offers":[{"title":"Default Title","offer_id":43123921125470,"sku":"110300","price":998.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0663\/7151\/8558\/files\/110300_image_5a9c97eb-12b2-40ec-b4d3-023afff75be2.png?v=1786022833","url":"https:\/\/nationalboilersupply.com\/products\/mcdonnell-miller-110300-model-5-reset-snap-switch","provider":"National Boiler Supply","version":"1.0","type":"link"}