{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"H3DK-M2A DC12","brand":"Omron","brandSlug":"omron","productSlug":"H3DK-M2A-DC12","canonicalUrl":"https://aoctrl.com/omron/H3DK-M2A-DC12","factsUrl":"https://aoctrl.com/api/mcp/products/H3DK-M2A%20DC12","rawCanonicalId":null},"summary":{"shortDescription":"Omron H3DK-M series H3DK-M2A DC12 programmable multi-function timer, DPDT (2 Form C), 12 VDC supply, 5 A 250 VAC mechanical relay output, 0.1 s to 1200 h delay, DIN rail mount.","salesMarkdown":"## What's in the box and what it does The Omron H3DK-M2A DC12 is a programmable multi-function timer from the H3DK-M series, housed in a DIN-rail-mount box with screw terminals — drops onto a standard 35 mm rail and accepts solid or ferruled conductors on the field side (cites:,). Timing ranges from 0.1 second out to 1200 hours on a single dial — a wide enough window that the same unit covers sub-second pulse-shaping, conveyor dwell, and multi-day process schedules (cites:). Multi-function programming means one SKU handles on-delay, off-delay, interval, and other modes set via the front-face screwdriver slot — useful when a panel-builder wants one timer line item in the BOM rather than four part numbers (cites:,). ## Output contacts and switching duty The DPDT (2 Form C) mechanical relay is rated 5 A at 250 VAC per pole — comfortably covers coil switching on contactors up to that frame and direct lamp/auxiliary loads at panel scale (cites:,). Timing is initiated by the input voltage itself — no separate trigger terminal — which simplifies the wiring: feed 12 VDC to the supply terminals and the timer starts on its configured mode (cites:,). Mechanical relay contacts give a dry, voltage-free switching element; pair with an interposing relay if the downstream load is DC or if higher inrush is expected, since electromechanical contacts wear on hot inrush rather than steady state (cites:,). ## Fitting it into the panel DIN-rail mounting and a compact box package means the timer sits alongside other 22.5 mm or 45 mm wide modular devices — confirm the panel cutout footprint matches the H3DK-M family face dimensions before pulling the existing timer out, since neighbouring timer families look similar from the front but differ in depth and terminal pitch (cites:,). Screwdriver-slot adjustment on the front dial is intentional — tamper-resistant enough that operators won't drift the setting, but easy for the night-shift tech with a flat blade to re-range during a callout (cites:).","metaTitle":"Omron H3DK-M2A DC12 Timer, DPDT, 12VDC, 5A","metaDescription":"Omron H3DK-M2A DC12 H3DK-M multi-function timer, DPDT 5A 250VAC mechanical relay, 0.1s to 1200h delay, 12VDC supply, DIN rail. 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":"H3DK-M2A DC12","Series":"H3DK-M","Circuit":"DPDT (2 Form C)","Package":"Box","Function":"Programmable (Multi-Function)","Delay Time":"0.1 Sec ~ 1200 Hrs","Relay Type":"Mechanical Relay","description":"RELAY TIME DELAY 1200HRS 5A 250V","Mounting Type":"DIN Rail","lifecycle_stage":"mature","Voltage - Supply":"12VDC","Termination Style":"Screw Terminal","Timing Initiate Method":"Input Voltage","Contact Rating @ Voltage":"5A @ 250VAC","Timing Adjustment Method":"Screwdriver Slot"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$48.13 – $132.63","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/18dde34b8cd9146d8645793ee4d4d560.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the circuit configuration of H3DK-M2A DC12?","answer":"DPDT (2 Form C) mechanical relay — two changeover contacts, both rated 5 A at 250 VAC (cites:,). Two poles lets a single timer drive two independent loads or switch a load and a signal in parallel, without a second timing device (cites:)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/H3DK-M2A-DC12","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/H3DK-M2A-DC12 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}}