{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RG7400-7GA00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RG7400-7GA00","canonicalUrl":"https://aoctrl.com/siemens/3RG7400-7GA00","factsUrl":"https://aoctrl.com/api/mcp/products/3RG7400-7GA00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC PXO310 K21 diffuse sensor, 31x20x12 mm, DC 10-30 V, 50 cm range, NPN dark-on, 150 mA, M8 3-pole connector, IP68.","salesMarkdown":"The Siemens 3RG7400-7GA00 is a SIMATIC PXO310 K21 diffuse sensor — an energetic photoelectric unit in a compact 31x20x12 mm housing. It operates on DC 10-30 V, outputs NPN dark-on at 150 mA, and connects via an M8 3-pole connector. The 50 cm sensing range suits close-proximity presence detection in conveyors or packaging lines, and the IP68 rating means it survives washdown environments without a secondary enclosure. The 50 cm diffuse range is the headline figure — it defines the maximum reliable detection distance for a standard white card target. In practice, darker materials or dusty lenses reduce that reach; derate by 30-50% for black targets. The NPN dark-on output means the load is energized when the sensor sees the target (light blocked), which is the common fail-safe configuration for conveyor jam detection. The 150 mA sink current covers most PLC inputs and small relays directly, but check the load draw before paralleling multiple indicators. The M8 3-pole connector is a standard micro-style; verify your cable assembly matches the pin assignment (typically brown = V+, blue = GND, black = output). ## Integration Notes The 31x20x12 mm housing fits a standard 20 mm slot in sensor-mounting brackets. The M8 connector requires a mating cordset with a 3-pole female straight or right-angle connector — no field-wiring access inside the sensor body. Mounting orientation is flexible, but the sensing face must remain unobstructed; the IP68 seal is maintained only with the connector fully tightened and the O-ring in place. For washdown zones, orient the connector downward to prevent water pooling at the seal.","metaTitle":"Siemens 3RG7400-7GA00 SIMATIC PXO310 K21 Diffuse Sensor, EOL","metaDescription":"Siemens 3RG7400-7GA00 SIMATIC PXO310 K21 diffuse sensor, DC 10-30V, 50cm range, NPN dark-on, 150mA, M8 3-pole, IP68. Lifecycle stage: eol_hot. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Photoelectric Sensors"],"specifications":{"lifecycle_stage":"eol_hot"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=318583&mlfb=3RG7400-7GA00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RG7400-7GA00/alternatives.json"},"ai":{"faq":[{"question":"What are the key specifications of the 3RG7400-7GA00?","answer":"It is a SIMATIC PXO310 K21 diffuse sensor with a 50 cm range, DC 10-30 V supply, NPN dark-on output rated 150 mA, M8 3-pole connector, and IP68 protection."},{"question":"How do I source this part given the eol_hot status?","answer":"We source it to order against an RFQ. Availability depends on remaining factory stock and broker channels. For a critical spare, ordering before the LTB closes is recommended."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RG7400-7GA00","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3RG7400-7GA00 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}}