{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"D4C1720","brand":"Omron","brandSlug":"omron","productSlug":"D4C1720","canonicalUrl":"https://aoctrl.com/omron/D4C1720","factsUrl":"https://aoctrl.com/api/mcp/products/D4C1720","rawCanonicalId":null},"summary":{"shortDescription":"Omron D4C series limit switch, roller lever plunger actuator, SPDT momentary action, IP67, 5 A @ 250 V AC / 4 A @ 30 V DC, 16.4 ft cable.","salesMarkdown":"The D4C1720 is a roller lever limit switch from Omron's D4C series, built for position sensing in wet or dusty environments. It's a momentary-action SPDT switch with a side-mounted roller lever actuator, rated for 5 A at 250 V AC (resistive) and 4 A at 30 V DC. The IP67 rating means the switch body and actuator are sealed against dust and temporary submersion — out here in the grease, that's what keeps a limit switch from getting killed by washdown or coolant spray. The 16.4 ft SJT(O) cable comes attached, so you don't need to add a connector or worry about the boot leaking. Approvals include UL Listing, CSA, CE, and CCC, so it's accepted across North American and international panels without extra paperwork. The 5 A AC-1 resistive rating is the number that governs most panel applications — it's the continuous current the contacts can make and break on a resistive load. The 4 A DC rating at 30 V is for low-voltage control circuits; don't try to switch a 48 V DC solenoid without checking the DC derating curve, because inductive loads will arc longer at higher voltages. The roller lever has a 0.68 in roller diameter on a 0.28 in width, side-mounted with fixed arm adjustability. Pretravel is 25°, overtravel 40°, differential travel 3°. That's a fairly generous operating window — good for applications where the cam or dog isn't perfectly repeatable, like conveyor diverters or packaging machine gates. Body is aluminum, arm is aluminum, roller is stainless steel. The stainless roller matters if you're in a washdown zone — it won't rust and gall on the cam surface. No boot on the actuator, so if you need a sealed plunger for high-pressure spray, you'd want a different variant with a boot.","metaTitle":"Omron D4C1720 Limit Switch, Roller Lever, IP67, 5A @ 250V","metaDescription":"Omron D4C1720 limit switch with roller lever actuator, IP67, SPDT contacts rated 5A @ 250VAC and 4A @ 30VDC. Mature lifecycle; sourced to order. UL/CSA/CE/CCC listed.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Limit Switches"],"specifications":{"Brand":"OMRON","Action":"Momentary","Series":"D4C","Arm Depth":"0.54 in","Arm Width":"0.69 in","IP Rating":"IP67","Lamp Type":"LED","Pretravel":"25°","Standards":"CCC; CE; CSA; EN; UL Listed","Body Depth":"0.62 in","Body Width":"1.57 in","Overtravel":"40°","Body Height":"65 in","Arm Material":"Aluminum","Contact Form":"SPDT","Roller Width":"0.28 in","Total Travel":"38°","Actuator Type":"Roller Lever","Body Material":"Aluminum","Overall Depth":"1.97 in","Overall Width":"1.57 in","Actuator Style":"Roller Lever Plunger","Mounting Style":"Surface","Overall Height":"4.04 in","Actuator Length":"1.5 in","Roller Diameter":"0.68 in","Roller Material":"Stainless Steel","Roller Position":"Side","lifecycle_stage":"mature","AC Contact Rating":"5 A @ 250 V","Actuator Location":"Side","Arm Adjustability":"Fixed","DC Contact Rating":"4 A @ 30 V","Includes Actuator":"Actuator Included","Body Configuration":"Plug-In","Differential Travel":"3°","Arm Length - Maximum":"1.84 in","Boot Sealed Actuator":"No Boot Included","Directional Movement":"CCW/CW","Roller Adjustability":"Fixed","Electrical Connection":"16.4 ft Cable (SJT(O))","NEMA Enclosure Rating":"3; 4; 13","Plunger Adjustability":"Fixed","Mounting Hole Diameter":"0.2 in","Number of Mounting Holes":"2","Operating Force - Maximum":"5.69 N","Operating Temperature - Maximum":"158 °F","Operating Temperature - Minimum":"14 °F","Mounting Hole Vertical Center to Center Distance":"25 mm","Mounting Hole Horizontal Center to Center Distance":"25 mm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$72.39","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/D4C1720/alternatives.json"},"ai":{"faq":[{"question":"What approvals does the D4C1720 carry?","answer":"It is UL Listed, CSA certified, CE marked, and CCC approved. That covers North American and international regulatory requirements for industrial control equipment."},{"question":"What are the key electrical ratings?","answer":"The contacts are SPDT momentary action, rated 5 A at 250 V AC (resistive) and 4 A at 30 V DC. The AC rating is the one to watch for most motor control or solenoid circuits; the DC rating is for low-voltage control logic."},{"question":"Does it come with a cable or a connector?","answer":"It comes with a 16.4 ft (5 m) SJT(O) cable attached, so it's ready to wire directly into the panel or junction box. No separate connector or pigtail needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/omron/D4C1720","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/D4C1720 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}}