{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB2383-4AC1","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB2383-4AC1","canonicalUrl":"https://aoctrl.com/siemens/3RB2383-4AC1","factsUrl":"https://aoctrl.com/api/mcp/products/3RB2383-4AC1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state overload relay, 3RB2383-4AC1, 630 A rated operational current, adjustable trip classes 5/10/20/30, 3-pole, spring-loaded auxiliary terminals, size S00...S12.","salesMarkdown":"The Siemens 3RB2383-4AC1 is a SIRIUS solid-state overload relay rated for 630 A operational current — that is the continuous motor full-load current it can protect, not a short-time withstand. The adjustable trip class (CLASS 5, 10, 20 and 30) lets you match the thermal memory to the motor's starting profile: Class 5 for submersible pumps or low-inertia loads that accelerate quickly, Class 20 or 30 for high-inertia fans or crushers that need a longer start without nuisance tripping. The 3-pole main circuit and 2 NO + 2 NC auxiliary contacts (spring-loaded terminals for the control circuit) cover the standard motor feeder wiring scheme — one NC in the contactor coil loop, one for a remote fault signal. Mounts in any position — stand-alone installation, not clip-on to a contactor. The 45 mm width and 95 mm depth fit a standard 45 mm DIN-rail pitch; the 111 mm height leaves clearance under a typical 200 mm enclosure depth. Side clearance of 6 mm to adjacent devices is specified. Surge voltage resistance rated at 4 kV (IEC 60947-1 overvoltage category III).","metaTitle":"Siemens 3RB2383-4AC1 SIRIUS Solid-State Overload Relay, 630","metaDescription":"Siemens 3RB2383-4AC1 SIRIUS solid-state overload relay, 630 A rated current, adjustable trip class 5/10/20/30. Current lifecycle stage. Available to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Overload Relays"],"specifications":{"Depth":"95 mm","Width":"45 mm","title":"3RB2383-4AC1","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","description":"Evaluation unit for full motor protection (bistable) Size S00...S12, class 5...30 Stand-alone installation Main circuit: -- Auxiliary circuit: Spring-type terminal Manual-Automatic-Reset","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":"spring-loaded 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":"2x (0.25 ... 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":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f4c7ad751a04537dc3dec39df746bb44.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=176959&mlfb=3RB2383-4AC1"},"ai":{"faq":[{"question":"What is the rated operational current of 3RB2383-4AC1?","answer":"630 A continuous motor full-load current."},{"question":"What trip classes are available on this overload relay?","answer":"Adjustable to CLASS 5, 10, 20, or 30."},{"question":"Where can I buy the 3RB2383-4AC1?","answer":"Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB2383-4AC1","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/3RB2383-4AC1 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}}