{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB2383-4AA1","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB2383-4AA1","canonicalUrl":"https://aoctrl.com/siemens/3RB2383-4AA1","factsUrl":"https://aoctrl.com/api/mcp/products/3RB2383-4AA1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3RB2383-4AA1 — now in phase-out and being discontinued. Supplied from remaining channel stock; full specifications, lifecycle and same-series options are below.","salesMarkdown":"## Overview The Siemens 3RB2383-4AA1 is a 3-pole evaluation unit for full motor protection, designed for stand-alone installation across contactor sizes S00 through S12. It offers adjustable trip classes 5, 10, 20, and 30, and uses screw-type terminals for the auxiliary circuit. Rated for a switching current of 630 A, the unit provides bistable (latching) operation, meaning it holds its trip state even after a power loss — useful for fault indication on unattended machinery. This evaluation unit monitors motor current and trips on overload, short-circuit, or phase imbalance. The adjustable trip class (5, 10, 20, or 30) sets the thermal memory curve — class 10 for standard motor start, class 20 or 30 for high-inertia loads like fans or crushers. The 3-pole design covers three-phase motors up to the 630 A switching current rating. ## Applications The 3RB2383-4AA1 is used in motor control centers, pump panels, conveyor drives, and HVAC equipment where a standalone overload relay with adjustable trip class is needed. Its bistable trip memory makes it suitable for remote or unmanned sites where fault persistence must be visible after a power cycle. Compatible with contactor sizes S00 through S12, it fits into existing Siemens motor starter assemblies or as a direct replacement in retrofit panels.","metaTitle":"Siemens 3RB2383-4AA1 Evaluation Unit, 3-pole, Class 5-30","metaDescription":"Siemens 3RB2383-4AA1 evaluation unit for full motor protection, 3-pole, adjustable trip class 5-30, stand-alone installation, IP20, 230 g.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Overload Relays"],"specifications":{"Depth":"95 mm","Width":"45 mm","Height":"111 mm","Upwards":"0 mm","at 24 V":"2 A","at 60 V":"0.55 A","Forwards":"0 mm","Per Pole":"0.17 W","at 110 V":"0.3 A","at 120 V":"6 A","at 125 V":"0.3 A","at 220 V":"0.2 A","at 230 V":"3 A","Backwards":"0 mm","Downwards":"0 mm","Trip Class":"CLASS 5, 10, 20 and 30 adjustable","At The Side":"6 mm","During Storage":"-40 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-40 ... +80 °C","Fastening Method":"stand-alone installation","Mounting Position":"any","Product Brand Name":"SIRIUS","Product Designation":"solid-state overload relay","at 50 Hz rated value":"24 ... 240 V","at 60 Hz rated value":"24 ... 240 V","Size Of Overload Relay":"S00 ... S12","Substance Prohibitance (Date)":"07/01/2006","Operational Current Rated Value":"630 A","For Auxiliary And Control Circuit":"screw-type terminals","Relative Humidity During Operation":"100 %","Surge Voltage Resistance Rated Value":"4 kV","at AWG cables for auxiliary contacts":"2x (24 ... 16)","reference code according to IEC 81346-2":"F","Finely Stranded With Core End Processing":"0.5 ... 2.5 mm², 2x (0.5 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"3","number of NC contacts for auxiliary contacts":"2","number of NO contacts for auxiliary contacts":"2","Size Of Contactor Can Be Combined Company-Specific":"S00 ... S12","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 6 A","insulation voltage with degree of pollution 3 at AC rated value":"300 V","Product Component Removable Terminal For Auxiliary And Control Circuit":"Yes","power loss [W] for rated value of the current at AC in hot operating state":"0.5 W","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"0.3 ... 630 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$203.20","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3a9f56b23d7662b6bd09831b91a901fd.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=404713&mlfb=3RB2383-4AA1"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB2383-4AA1","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/3RB2383-4AA1 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:41:02.429Z","lastPublished":"2026-07-20T14:41:02.429Z","indexable":true}}