{"product_id":"allen-bradley-800ms-h42b-selector-switch","title":"Allen-Bradley 800MS-H42B Selector Switch","description":"\u003cdiv\u003e\u003cp\u003eAllen-Bradley 800MS-H42B is a two-position selector switch with a left-side spring-return and a contact set configured for 1 normally open (NO) and 1 normally closed (NC) circuit. In the active position the NO contact closes to complete a path while the NC contact opens, providing complementary outputs for simple control logic in industrial panels. The H42B designation identifies a specific operator\/cam arrangement within the 800MS family, enabling consistent switching behavior across compatible components and standard wiring schemes. Typical applications include mode selection, control sequencing, and fail-safe interlock logic, where one path is energized while the other is de-energized, delivering clear, deterministic states in automation circuits.\u003c\/p\u003e\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"New","offer_id":51657507209518,"sku":null,"price":102.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0818\/1038\/files\/Ebay_website_image_e4f55caf-3b0b-4f79-b8ff-80b7d8883995.jpg?v=1769469671","url":"https:\/\/plgautomation.com\/products\/allen-bradley-800ms-h42b-selector-switch","provider":"PLG Automation ","version":"1.0","type":"link"}