{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"D4A0003N","brand":"Omron","brandSlug":"omron","productSlug":"D4A0003N","canonicalUrl":"https://aoctrl.com/omron/D4A0003N","factsUrl":"https://aoctrl.com/api/mcp/products/D4A0003N","rawCanonicalId":null},"summary":{"shortDescription":"Omron D4A Series limit switch head, roller lever plunger side actuator, Maintained action, IP67, CSA/UL listed, 1.77 in-lb operating torque, 70° overtravel.","salesMarkdown":"## What this head does on a limit switch The Omron D4A0003N is a limit switch head from the D4A series, designed as a replacement or build-up component for the D4A1103N base switch. It uses a side-mounted roller lever plunger actuator with a Maintained action — meaning the contacts stay in their switched state after the actuator is released, until mechanically reset. The steel arm is fixed (non-adjustable) with a 0.57 in depth, and the plunger is also fixed. The Low Torque feature (1.77 in-lb operating torque) means this head trips with a light touch — useful on light-duty conveyor diverters or packaging-machine gates where a heavy cam would overshoot the target. The 70° overtravel gives the cam room to keep moving after the switch trips, reducing the risk of mechanical damage from over-rotation. ## Where it goes — enclosure and environment Rated IP67, so the head seals against dust ingress and temporary immersion — fine for washdown zones in food processing or outdoor conveyor gantries. The NEMA enclosure ratings (1, 2, 3, 4X, 5, 6P, 12, 13) cover indoor and outdoor use, including corrosion-resistant (4X) and oil-tight (12, 13) environments. Operating temperature spans -40 to 212 °F, which handles freezer lines and hot wash cycles. The 4° differential travel is the angular gap between make and break — tight enough for precise cam timing on indexing tables, but not so tight that vibration causes chatter. The directional movement is linear (plunger stroke), so the roller lever tracks a cam profile in one axis. CSA and UL Listed approvals are on file, which covers North American panel builds requiring third-party certification.","metaTitle":"Omron D4A0003N Limit Switch Head, Roller Lever Plunger, IP67","metaDescription":"Omron D4A0003N limit switch head with roller lever plunger, IP67, CSA/UL listed, 1.77 in-lb operating torque, -40 to 212 °F range. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Limit Switches"],"specifications":{"Brand":"OMRON","Action":"Maintained","Series":"D4A","Features":"Low Torque","Arm Depth":"0.57 in","IP Rating":"IP67","Standards":"CSA; UL Listed","Overtravel":"70°","Display Qty":"1","Arm Material":"Steel","Actuator Style":"Roller Lever Plunger","lifecycle_stage":"mature","Display Sell UOM":"EA","Operating Torque":"1.77 in-lb","Actuator Location":"Side","Arm Adjustability":"Fixed","Differential Travel":"4°","Directional Movement":"Linear","NEMA Enclosure Rating":"1; 2; 3; 4X; 5; 6P; 12; 13","Plunger Adjustability":"Fixed","Compatible with Series":"D4A","Operating Temperature - Maximum":"212 °F","Operating Temperature - Minimum":"-40 °F","Compatible with Manufacturer Model Number":"D4A1103N"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$60.96 – $103.21","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/D4A0003N/alternatives.json"},"ai":{"faq":[{"question":"What is D4A0003N's listed action?","answer":"The D4A0003N has a Maintained action — the switch contacts stay in their operated position after the actuator is released, requiring a mechanical reset to return."},{"question":"What compliance documentation does Omron provide for D4A0003N?","answer":"The D4A0003N carries CSA and UL Listed approvals, covering North American safety certification. RoHS and REACH documentation is typically available from Omron on request for the D4A series."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/omron/D4A0003N","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/omron/D4A0003N when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}