{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"G3NA420BUTUAC100240","brand":"Omron","brandSlug":"omron","productSlug":"G3NA420BUTUAC100240","canonicalUrl":"https://aoctrl.com/omron/G3NA420BUTUAC100240","factsUrl":"https://aoctrl.com/api/mcp/products/G3NA420BUTUAC100240","rawCanonicalId":null},"summary":{"shortDescription":"Omron G3NA Series, solid-state relay, surface mount, 20 A max output, 200-480 VAC, zero-crossing, photocoupler isolated, screw terminals.","salesMarkdown":"The Omron G3NA420BUTUAC100240 is a single-phase solid-state relay from the G3NA series, rated for 20 A continuous output current with or without a heat sink — the same 20 A limit applies in both cases, so the buyer does not need to derate for an un-heatsunk installation. Output voltage range is 200 to 480 VAC, making it suitable for 230 V, 400 V, or 480 V line supplies common in industrial control panels. Input control is 100 to 120 VAC, which means it can be driven directly from a standard 120 VAC control transformer without an intermediate DC supply. The photocoupler isolation provides galvanic separation between control and load circuits, which simplifies panel wiring and meets basic safety isolation requirements. The finger-safe design means the live terminals are shielded to IP20 touch protection, which reduces shock risk during panel access. ## Deployment context Surface-mounted via screw terminals, the relay is intended for panel or chassis installation — not DIN-rail snap-on. The 1.1 × 1.69 × 2.28 inch footprint (–) fits standard enclosure backplates. A separate heat sink is not included; for loads near 20 A in a warm enclosure, an external heat sink should be added to keep the junction temperature within the -22 to 176 °F operating range (–).","metaTitle":"Omron G3NA420BUTUAC100240 SSR, 20 A, 200-480 VAC, Zero-Cross","metaDescription":"Omron G3NA420BUTUAC100240 solid-state relay, 20 A output, 200-480 VAC, zero-crossing switching. CSA/EN/UL listed. Mature lifecycle. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Solid State Relays"],"specifications":{"Brand":"OMRON","Series":"G3NA Series","Frequency":"50/60 Hz","Heat Sink":"Not Included","Standards":"CSA Certified; EN (TUV); UL Listed","Body Depth":"1.1 in","Body Width":"1.69 in","Body Height":"2.28 in","Finger Safe":"Yes","Current Type":"AC","Input Current":"20 A","Input Voltage":"100 to 120V AC","Output Voltage":"200 to 480V AC","lifecycle_stage":"mature","Electrical Phase":"Single","Relay Mounting Style":"Surface","Switch Configuration":"Form A","Voltage/Current Type":"AC Output","Insulation Resistance":"100 megaohm","Output Switching Mode":"Zero Crossing","Switch Component Type":"Photocoupler","Electrical Connection Type":"Screw","Maximum Operating Temperature":"176 °F","Minimum Operating Temperature":"-22 °F","Maximum Output Current with Heat Sink":"20 A","Maximum Output Current without Heat Sink":"20 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$177.51","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/G3NA420BUTUAC100240/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings of G3NA420BUTUAC100240?","answer":"20 A output current (with or without heat sink), 200–480 VAC output voltage, 100–120 VAC control input, zero-crossing switching, photocoupler isolation, and CSA/EN/UL approvals."},{"question":"Where can I buy G3NA420BUTUAC100240?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Contact us for current pricing and availability."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/omron/G3NA420BUTUAC100240","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/G3NA420BUTUAC100240 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}}