{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"G7Z-4A-20Z-R DC24V","brand":"Omron","brandSlug":"omron","productSlug":"G7Z-4A-20Z-R-DC24V","canonicalUrl":"https://aoctrl.com/omron/G7Z-4A-20Z-R-DC24V","factsUrl":"https://aoctrl.com/api/mcp/products/G7Z-4A-20Z-R%20DC24V","rawCanonicalId":null},"summary":{"shortDescription":"Omron G7Z series power relay, G7Z-4A-20Z-R DC24V, 24 VDC coil, 4PST-NO + DPST-NO auxiliary contacts, 40 A switching, screw terminals.","salesMarkdown":"## What the 40 A rating means on this relay The G7Z-4A-20Z-R DC24V: The main NO contacts are rated 40 A resistive at 440 VAC, which means this relay can switch motor loads and heaters directly in a panel without needing an intermediate contactor for moderate currents. The inductive rating drops to 22 A at the same voltage — that's the real-world ceiling for motor or solenoid loads, and the number to use for sizing in a pump or conveyor circuit. Auxiliary contact block adds DPST-NO with 1 A max switching — enough to signal a PLC input or latch a holding circuit, but not for power. The minimum load on the main contacts is 2 A at 24 VDC; below that, the silver alloy may not wet reliably, so don't use this for dry-signal switching. The auxiliary block handles down to 1 mA at 5 VDC, which does cover low-level logic feedback. ## Terminal hardware and panel fit Coil terminals are M3.5 screws; main contact terminals are M5.0 — these are substantial lugs for 40 A wiring, and the M5 size means you're landing 8 AWG or similar without a crimp ring if the terminal accepts bare wire. The auxiliary block uses M3.5 screws, matching typical control wiring. All screw terminals, so no special crimp tool needed on site. Power consumption is about 3.7 W for the coil — factor that into the panel thermal budget if you're packing multiple relays in a sealed enclosure. ## Lifecycle and sourcing for this G7Z relay RoHS compliant per the listing.","metaTitle":"Omron G7Z-4A-20Z-R DC24V Power Relay, 4PST-NO, 40 A","metaDescription":"Omron G7Z-4A-20Z-R DC24V power relay, 24 VDC coil, 4PST-NO + DPST-NO auxiliary, 40 A switching, screw terminals. Mature lifecycle, RoHS compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Machine Safety Accessories"],"specifications":{"title":"G7Z-4A-20Z-R DC24V","Terminal":"Screw (Coil: M3.5, Contact: M5.0)|Auxiliary Contact Block: Screw (M3.5)","description":"G7Z|Cost-efficient solution for switching power to motors and other types of equipment","Coil voltage":"24 VDC","Minimum Load":"2 A@24 VDC|Auxiliary Contact Block: 1mA @5 VDC","RoHS compliant":"Yes","lifecycle_stage":"mature","Power consumption":"Approx. 3.7 W","Contact arrangement":"4PST-NO, Auxiliary Contact Block: DPST-NO","Operating temperature":"-25 to 60°C","Max. switching current":"NO: 40A Auxiliary Contact Block: 1A","Rated load (inductive)":"NO: 22A@440VAC Auxiliary Contact Block: 0.5A@440VAC","Rated load (resistive)":"NO: 40A@440VAC, 5A@110VDC Auxiliary Contact Block: 1A@440VAC, 0.5A@110VDC","Max. switching power(inductive)":"NO: 9,680 VA Auxiliary Contact Block: 220 VA","Max. switching power(resistive)":"NO: 17,600 VA, 550 with Auxiliary Contact Block: 440 VA, 55 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/0fd43188bbd9050d9ed646c743a06f22.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the G7Z-4A-20Z-R DC24V rated for in inductive motor switching?","answer":"The main NO contacts are rated 22 A at 440 VAC for inductive loads — that's the figure to use for motor duty, not the 40 A resistive rating. The auxiliary block handles 0.5 A at 440 VAC inductive."},{"question":"Can the G7Z-4A-20Z-R DC24V switch low-level signals or dry contacts?","answer":"No — the main contacts have a minimum load of 2 A at 24 VDC, so they won't reliably switch dry logic signals. The auxiliary contact block does go down to 1 mA at 5 VDC, which covers PLC feedback or status indication."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/G7Z-4A-20Z-R-DC24V","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/G7Z-4A-20Z-R-DC24V 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}}