{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"D4GSN1R","brand":"Omron","brandSlug":"omron","productSlug":"D4GSN1R","canonicalUrl":"https://aoctrl.com/omron/D4GSN1R","factsUrl":"https://aoctrl.com/api/mcp/products/D4GSN1R","rawCanonicalId":null},"summary":{"shortDescription":"Omron D4GS-N safety-door switch, 1NC/1NO contact configuration, IP67, 240 V AC / 250 V DC, mechanical lock, 1 m cable, 30 x 17 x 85 mm.","salesMarkdown":"## What the D4GSN1R is and what the contact configuration means The D4GSN1R is a forced断开 (positive-opening) safety-door switch from Omron's D4GS-N series — the 1NC/1NO contact pair means the normally-closed contact opens under mechanical force when the guard opens, breaking the safety circuit before access is possible, while the normally-open contact signals the door position to the PLC or safety controller. This is the fundamental safety architecture: the NC contact is not reliant on spring return but on the actuator's positive drive, which is what makes it compliant for safety-circuit use under IEC 60947-5-1. The mechanical lock holds the guard shut until the machine's安全 cycle completes, so the interlock cannot be bypassed by holding the door partially closed. ## Electrical ratings and what the voltage and current ceiling drives The switch carries a 240 V AC and 250 V DC switching voltage rating, with a 750 mA AC and 270 mA DC current limit. These are not power-handling figures — the contact is designed to interrupt low-power safety circuits, typically 24 VDC control coils, pilot lights, or PLC inputs, not motor loads directly. For a guard-door monitoring circuit running at 24 VDC, the 270 mA DC rating gives comfortable headroom above the typical 50–100 mA pull of a safety relay coil. The 240 VAC rating covers AC-powered safety control panels that use 120/230 V contactor coils; the 750 mA AC rating is sufficient for those coil inrush currents without contact welding. ## Endurance and what 100k electric cycles means for guard-door duty The electric service life is listed at 100,000 cycles and the mechanical at 1,000,000 cycles. The gap between them is typical for a safety switch: the contact wear mechanism (arcing, contact bounce, material transfer) governs the electrical endurance, while the actuator and lock mechanism governs the much longer mechanical life. In a guard-door application where the door is opened and closed every shift, 100,000 cycles translates to roughly 15 years at 15 cycles per operating day — a normal machine life before the switch should be replaced preventively, even if the contacts still function. Budget this replacement interval during scheduled maintenance shutdowns, not as an emergency repair. ## IP67, the pre-terminated cable, and what the 30 x 17 x 85 mm body drives in panel fit IP67 means the switch body and optics withstand temporary immersion — the cable gland is the wet-end seal, so confirm the 1 m cable routing stays above the flood plane in the installation. The pre-terminated 1 m cable eliminates the field termination step and is a deliberate panel-design choice: it routes directly into a field junction box or the safety relay without a separate terminal block, saving a connection point that could be a failure source. At 30 mm deep, 17 mm wide, and 85 mm tall, the switch is compact enough to fit a standard 40 mm EN enclosure channel — check that the actuator entry point aligns with the guard door mechanism before committing to the 1 m cable length, since a 1 m run may need a cable carrier or conduit if the routing path is not direct.","metaTitle":"Omron D4GSN1R Safety Door Switch, IP67, 1NC/1NO","metaDescription":"Omron D4GSN1R safety-door switch, 1NC/1NO contacts, IP67, 240 V AC / 250 V DC, 1 m cable. Mature product — quoted to order on RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Limit Switches"],"specifications":{"Depth":"30 mm","Width":"17 mm","title":"D4GSN1R","Height":"85 mm","Series":"D4GS-N","Lock Type":"Mechanical","Switch Type":"Safety-Door Switch","description":"Safety Door Switch, 1NC / 1NO, IP67, Cable, 1 m","Actuator Type":"Interlocking Operator","lifecycle_stage":"mature","Termination Type":"Cable, 1 m","Protection Rating":"IP67","Contact Configuration":"1NC;1NO","Switching Current - AC":"750 mA","Switching Current - DC":"270 mA","Switching Voltage - AC":"240 V","Switching Voltage - DC":"250 V","Service Life - Electric":"100000 Cycles","Number of Head Directions":"1","Service Life - Mechanical":"1 Million Cycles"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$60.96 – $119.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/5ed04770fc9f1bf78c21cdaf516eccb1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the D4GSN1R's listed depth and width on this Limit Switches line?","answer":"The listed dimensions are 30 mm depth, 17 mm width, and 85 mm height — compact enough to fit a standard 40 mm EN enclosure channel."},{"question":"How do I get current pricing and availability for the D4GSN1R?","answer":"The D4GSN1R is sourced through independent distribution — RFQ to confirm current pricing, lead time, and lot traceability against your BOM quantity."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/D4GSN1R","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/D4GSN1R when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}