{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5TT5853-2","brand":"Siemens","brandSlug":"siemens","productSlug":"5TT5853-2","canonicalUrl":"https://aoctrl.com/siemens/5TT5853-2","factsUrl":"https://aoctrl.com/api/mcp/products/5TT5853-2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON Insta contactor, 5TT5853-2, 4 NC contacts, 440 V AC, 63 A, 24 V AC control coil, IP20, 3 modular width units.","salesMarkdown":"The Siemens 5TT5853-2 is a SENTRON Insta contactor — a panel-mount switching device designed to handle lighting and resistive loads, not motor starting. It carries 4 normally-closed (NC) contacts and zero normally-open (NO) contacts, so its job is to break a circuit on command, not make one. The contactor is rated for 440 V AC at 63 A and switches incandescent lamp loads up to 5000 W. The control coil is 24 V AC, not DC — a common trip point for anyone wiring it into a 24 VAC control transformer circuit. The 4 NC contact arrangement means this contactor stays closed when de-energized — it's a fail-closed device. In a safety circuit or emergency-stop chain that requires the load to remain connected until the coil is deliberately powered, that matters. The 24 V AC coil is non-negotiable: wire it with 24 V DC and it won't pull in reliably. The manufacturer explicitly notes that spacers must be provided between units to ensure heat dissipation. Plan for at least one empty MW slot between this and the next heat-producing device.","metaTitle":"Siemens 5TT5853-2 SENTRON Insta Contactor, 4 NC, 440V 63A","metaDescription":"Siemens SENTRON Insta contactor 5TT5853-2 with 4 NC contacts, rated 440V 63A, 24V AC coil. IP20, 3 MW, active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"71 mm","Width":"54 mm","Height":"90 mm","Maximum":"440 V","Minimum":"440 V","Rated Value":"24 V","lifecycle_stage":"current","Installation Depth":"0 mm","Product Brand Name":"SENTRON","Product Designation":"Insta contactor","Rated Value Maximum":"24 V","protection class IP":"IP20","Design Of The Product":"4 NC contacts","number of NC contacts":"4","number of NO contacts":"0","Installation Or Assembly Note":"provision must be made for spacers to ensure heat dissipation","Number Of Modular Width Units":"3","Type Of Voltage Of The Operating Voltage":"AC","Product Extension Installable Supplementary Devices":"Yes","Type Of Voltage Of The Operating Voltage For Actuation":"AC","Switching Capacity Active Power With Incandescent Lamp Load":"5 000 W","power loss [W] for rated value of the current at AC in hot operating state per pole":"8 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/77aad07bc07ae324080c07fa1450f6e8.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=219841&mlfb=5TT5853-2","alternativesUrl":"https://aoctrl.com/api/mcp/products/5TT5853-2/alternatives.json"},"ai":{"faq":[{"question":"What is 5TT5853-2's panel footprint?","answer":"The contactor measures 54 mm wide (3 modular width units), 71 mm deep, and 90 mm high. It mounts on a standard DIN rail. The manufacturer requires spacers between units for heat dissipation — do not pack them tight."},{"question":"What is the control voltage for 5TT5853-2?","answer":"The control coil is rated 24 V AC only. Supplying 24 V DC will not reliably pull the contactor in — verify your control transformer output before wiring."},{"question":"Where can I buy 5TT5853-2?","answer":"The 5TT5853-2 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5TT5853-2","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/5TT5853-2 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}}