{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MY4H24DC","brand":"Omron","brandSlug":"omron","productSlug":"MY4H24DC","canonicalUrl":"https://aoctrl.com/omron/MY4H24DC","factsUrl":"https://aoctrl.com/api/mcp/products/MY4H24DC","rawCanonicalId":null},"summary":{"shortDescription":"Omron MY series general-purpose relay, 4CO, 24 VDC coil, 3 A switching at 250 VAC, plug-in socket mount, 21.5 × 36 × 28 mm.","salesMarkdown":"## What the MY4H24DC actually switches Au + Ag alloy contact material keeps the low-level signal path stable when the relay carries dry-circuit or analog-loop loads alongside its rated 330 VA switching capacity at 250 VAC or 125 VDC. ## Socket-mount envelope and panel fit At 21.5 mm wide × 36 mm tall × 28 mm deep the MY4H24DC drops into the standard MY-series octal/11-pin socket pattern, so existing panel layouts built around the series accept it without drilling or DIN-rail rework. Socket-mount via plug-in terminal means the coil and contact wiring land on the base socket while the relay itself remains field-replaceable — pull the relay, swap, re-seat; the wiring never has to come off. ## Coil and contact ratings — the decision numbers The 24 VDC coil matches the standard PLC output and 24 V control-rail bus directly, so the relay can be driven from a transistor output without an interposing relay or a separate power supply. The 3 A switching current at 250 VAC is the headline limit for AC inductive loads; the same 3 A holds at 125 VDC on the DC side, with the 330 VA figure governing low-power AC switching where the load is resistive or lightly inductive. Derate for any motor or solenoid duty — the 3 A rating is general-purpose, not motor-rated, and that distinction is what protects the Au + Ag contact set from premature welding under inrush.","metaTitle":"Omron MY4H24DC General Purpose Relay, 4CO, 24 VDC, 3 A","metaDescription":"Omron MY4H24DC MY-series industrial relay, 4CO contact set, 24 VDC coil, 3 A / 330 VA switching, plug-in socket mount. Quoted to order against the BOM.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["General Purpose Relays"],"specifications":{"Width":"21.5 mm","title":"MY4H24DC","Height":"36 mm","Length":"28 mm","Series":"MY","Coil Type":"DC","description":"Industrial Relay 4CO DC 24V 3A Plug-In Terminal MY","Mounting Type":"Socket Mount","lifecycle_stage":"mature","Contact Material":"Au + Ag Alloy","Termination Type":"Plug-In Terminal","Coil Voltage - DC":"24 V","Switching Current":"3 A","Switching Capacity":"330 VA","Contact Configuration":"4CO","Switching Voltage - AC":"250 V","Switching Voltage - DC":"125 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$40.64","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/5fe376aad9732f8ab75c99912760aec3.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What are the key ratings I need to confirm fit for MY4H24DC?","answer":"The decision numbers are the 24 VDC coil, the 4CO contact configuration, the 3 A switching current at 250 VAC / 125 VDC, the 330 VA switching capacity, and the 21.5 × 36 × 28 mm socket-mount envelope — together they define whether an existing MY-series socket layout accepts the relay and whether the load sits inside the general-purpose duty envelope."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/MY4H24DC","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/MY4H24DC 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}}