{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5TT5733-2","brand":"Siemens","brandSlug":"siemens","productSlug":"5TT5733-2","canonicalUrl":"https://aoctrl.com/siemens/5TT5733-2","factsUrl":"https://aoctrl.com/api/mcp/products/5TT5733-2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON insta contactor, 4 NC contacts, 24 A at 230/400 V AC, 24 V AC/DC coil, IP20, 2 width units.","salesMarkdown":"The Siemens SENTRON 5TT5733-2 is an insta contactor — a compact, DIN-rail-mount switching device designed for lighting and resistive loads in commercial and industrial panels. It carries 4 normally-closed (NC) contacts and zero normally-open (NO) contacts, so its job is to break a circuit when the coil is energized and close it when the coil drops out. That makes it a natural fit for fail-safe or emergency-off circuits where the load must be disconnected on loss of control power. Rated operating current is 24 A at AC, and the coil pulls in on 24 V AC/DC. The main contacts are rated for 230 V nominal with a maximum of 440 V. That 24 A rating at 230 V handles a 5.5 kW resistive load comfortably; the 440 V ceiling means it can also switch 400 V line-to-line circuits in a three-phase panel, though the 24 A rating applies at the rated voltage — derate for higher voltages per the thermal curve. The 5TT5733-2 occupies 2 width units (36 mm) on a 35 mm DIN rail per DIN EN 50022. That shallow install depth leaves room behind the DIN rail for wiring troughs or busbars — a detail that matters when you're packing contactors into a crowded enclosure. The function code Q per DIN EN 61346-2 and DIN EN 81346-2 tells the panel designer this device is a switching function, not a protection or control element, which helps with consistent terminal marking across the build.","metaTitle":"Siemens SENTRON 5TT5733-2 Insta Contactor, 24 A, 4 NC","metaDescription":"Siemens SENTRON 5TT5733-2 insta contactor, 4 NC contacts, 24 A at 230/400 V AC, 24 V AC/DC coil, IP20, 2 width units. In current production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"71 mm","Width":"36 mm","Height":"90 mm","Maximum":"440 V","Minimum":"440 V","Rated Value":"230 V","lifecycle_stage":"current","Installation depth":"64 mm","Product brand name":"SENTRON","Product designation":"Insta contactor","Protection class IP":"IP20","at DC / rated value":"24 V","Number of NC contacts":"4","Number of NO contacts":"0","Number of width units":"2","Rated Value / Maximum":"24 V","acc. to DIN EN 61346-2":"Q","acc. to DIN EN 81346-2":"Q","Operating current / rated value":"24 A","Operating current / at AC / rated value":"24 A","Type of voltage / of the operating voltage":"AC","Switching capacity active power / with filament lamp load":"1 500 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=14373&mlfb=5TT5733-2","alternativesUrl":"https://aoctrl.com/api/mcp/products/5TT5733-2/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings I need to check for fit?","answer":"The 5TT5733-2 is a 4 NC contactor rated 24 A at 230/400 V AC with a 24 V AC/DC coil. The 4 NC configuration means it opens the circuit when the coil is energized — verify your control logic expects that behavior. The 24 A rating is the continuous current; it also carries a 1500 W filament lamp load switching capacity."},{"question":"Will the 5TT5733-2 drop into a panel built around a Siemens 3RT7025 contactor?","answer":"No. The 3RT7025 is a 3-pole motor contactor in size S0 (45 mm wide) with screw terminals and a different mounting footprint. The 5TT5733-2 is a 2-width-unit (36 mm) insta contactor with 4 NC contacts — it is not a form-fit replacement for a motor contactor. The function and contact arrangement are different; rewiring would be required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5TT5733-2","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/5TT5733-2 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}}