{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TF42-29","brand":"ABB","brandSlug":"abb","productSlug":"TF42-29","canonicalUrl":"https://aoctrl.com/abb/TF42-29","factsUrl":"https://aoctrl.com/api/mcp/products/TF42-29","rawCanonicalId":null},"summary":{"shortDescription":"Eaton A-Line TF42-29 thermal overload relay, 29 A, 3-pole, NEMA type, Trip Class 10.","salesMarkdown":"## What the 29 A rating means for fit The TF42-29 is a thermal bi-metallic overload relay rated 29 A, with an adjustable range of 24 to 29 A. That 29 A figure is the top end of the dial — you size it to the motor full-load current, not the relay's maximum. It is designed for use with Eaton AF Series contactors in the AF9 through AF38 frame sizes. Selectable manual or automatic reset gives the panel builder flexibility: manual reset for unattended or remote installations where an automatic restart after a trip could be a safety hazard, or auto reset for conveyors and pumps where a momentary overload clears itself. ## Integration with the AF contactor Mounts directly to the AF9 through AF38 contactor — no separate bracket or wiring kit needed for the mechanical interlock. The bi-metallic element tracks the motor's thermal curve, so the relay sees the same ambient as the contactor in the panel. Spring-clamp terminals on the relay accept the same wire sizes as the contactor coil terminals, keeping the panel wiring consistent.","metaTitle":"TF42-29 Overload Relay, 29 A, Trip Class 10, for AF Series","metaDescription":"TF42-29 thermal overload relay, 29 A, 3-pole, Trip Class 10. Current lifecycle stage. Sourced to order. Get a quote for TF42-29.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Overload Relays"],"specifications":{"Amps":"29","Type":"NEMA","Poles":"3","title":"TF42-29","Amps Range":"24 - 29","description":"24.0 - 29.0 Amp, IEC, Overload Relay|24.0 - 29.0 Amp, IEC, Overload Relay, Type: Thermal Bi-Metallic, Trip Class 10. Selectable Manual or Automatic Reset. For use with AF Series, AF9 - AF38 Frame Contactors.","Family / Style":"A-Line","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$30.48","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/76b9873ddd72eed8fd30a52ee6f035e5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the TF42-29's listed amp rating?","answer":"The TF42-29 is rated 29 A, with an adjustable range of 24 to 29 A."},{"question":"What contactors does the TF42-29 fit?","answer":"The TF42-29 is designed for use with Eaton AF Series contactors in the AF9 through AF38 frame sizes."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/TF42-29","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/abb/TF42-29 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}}