{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"H3YN-4 AC24","brand":"Omron","brandSlug":"omron","productSlug":"H3YN-4-AC24","canonicalUrl":"https://aoctrl.com/omron/H3YN-4-AC24","factsUrl":"https://aoctrl.com/api/mcp/products/H3YN-4%20AC24","rawCanonicalId":null},"summary":{"shortDescription":"Omron H3YN series electronic timer, 4PDT (4 Form C), 24 VAC supply, 0.1 sec to 10 min programmable delay, 3 A at 250 VAC contact rating, plug-in socket mount.","salesMarkdown":"## 4PDT mechanical timer, 0.1 sec to 10 min window The Omron H3YN-4 AC24 is a multi-function mechanical-relay timer in the H3YN series, giving a buyer four form-C contact sets in one plug-in package — useful when a single timer has to drive independent circuits from one timing source, like a coil plus an indicator plus an interlock. The 4PDT (4 Form C) layout keeps wiring centralised on one base rather than chaining two DPDT timers together. Delay runs from 0.1 sec to 10 min on a hand-dial adjustment, which covers the bulk of panel-builder timing duties — star-delta staging, purge delays, conveyor dwell, and pulse-stretching — without forcing the integrator out to a separate longer-range model. Timing is initiated by input voltage, so the timer starts the moment the coil is energised rather than waiting for a separate trigger contact. ## Coil, contacts, and the 250 VAC ceiling Coil voltage is fixed at 24 VAC — that pins the part to a 24 VAC control transformer or PSU, and excludes 24 VDC or 120 VAC installations from a drop-in swap. The 3 A at 250 VAC contact rating on each of the four poles governs what the timer can switch directly; for higher-current motor or heater loads the output should feed an interposing contactor rather than carrying the load itself. Socketable plug-in mounting is the practical hook for the field — the timer drops onto an 8-pin octal or compatible base, so a failed unit on the line is a two-minute swap with the hand dial and DIP switches pre-set on the replacement. The 0.1 sec lower bound is what makes the same part usable as a short pulse generator, not just a long on-delay. ## Production status and the BOM decision The H3YN-4 AC24 carries an Active product status with a mature lifecycle stage, meaning the part is still on the manufacturer's book but is no longer the newest generation — a common pattern where Omron continues to ship an established timer because the installed base and socket pinout are locked into existing panel designs. For a new panel, this is a fit-and-forget line item; for a maintenance BOM, it is a long-tail spare that is still orderable.","metaTitle":"Omron H3YN-4 AC24 Timer, 4PDT, 24VAC, 0.1s–10min","metaDescription":"Omron H3YN-4 AC24 multi-function timer, 4PDT (4 Form C), 24 VAC coil, 0.1 sec–10 min delay, 3 A at 250 VAC. Quoted to order against the BOM.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Electronic Timers & Counters"],"specifications":{"title":"H3YN-4 AC24","Series":"H3YN","Circuit":"4PDT (4 Form C)","Package":"Bulk","Function":"Programmable (Multi-Function)","Delay Time":"0.1 Sec ~ 10 Min","Relay Type":"Mechanical Relay","description":"RELAY TIME DELAY 10MIN 3A 250V","Mounting Type":"Socketable","lifecycle_stage":"mature","Voltage - Supply":"24VAC","Termination Style":"Plug In","Timing Initiate Method":"Input Voltage","Contact Rating @ Voltage":"3A @ 250VAC","Timing Adjustment Method":"Hand Dial"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$35.18","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ab453f2ee4720058dea0ae45b9df2217.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is H3YN-4 AC24 used for in a panel?","answer":"The H3YN-4 AC24 is a plug-in multi-function mechanical timer with a 4PDT (4 Form C) contact set, intended for on-delay, interval, and pulse-generation duties in 24 VAC control circuits. With a 0.1 sec to 10 min programmable range and 3 A at 250 VAC contacts, it drives signal-level relays, contactor coils, and indicator lamps directly, and slots into an octal-style socket for fast field replacement."},{"question":"What series and circuit configuration does H3YN-4 AC24 belong to?","answer":"It belongs to the Omron H3YN series and carries a 4PDT (4 Form C) circuit, giving four independent changeover contacts switched by a single mechanical relay mechanism. That four-pole layout is the defining reason to pick this code over a DPDT or SPDT timer in the same family when more than two switched outputs are needed from one timing source."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/H3YN-4-AC24","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/H3YN-4-AC24 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}}