{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB2113-4RD0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB2113-4RD0","canonicalUrl":"https://aoctrl.com/siemens/3RB2113-4RD0","factsUrl":"https://aoctrl.com/api/mcp/products/3RB2113-4RD0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state overload relay, 3RB2113-4RD0, 3-pole, screw-type main terminals, spring-loaded aux, ATEX Ex II (2) GD, adjustable trip classes 5E/10E/20E/30E.","salesMarkdown":"The Siemens SIRIUS 3RB2113-4RD0 is a 3-pole solid-state overload relay for motor protection in hazardous and industrial environments. It carries PTB 06 ATEX 3001 Ex II (2) GD certification, per IEC 60079, confirming it for Zone 1 gas and Zone 21 dust atmospheres when installed in the appropriate enclosure. This is not a field device — it mounts directly to a contactor via the contactor mounting fastening method, so the Ex marking applies to the relay itself as a component inside a certified assembly. Trip class is field-adjustable across CLASS 5E, 10E, 20E, and 30E, letting you match the thermal curve to the motor start profile — 5E for fast-acting protection on short-start loads, 30E for high-inertia starts like fans or centrifuges. The solid-state sensing eliminates the mechanical fatigue of bimetal relays, which matters in high-cycle or vibration-prone applications. Fastening method is contactor mounting — it clips directly onto the matching SIRIUS contactor, no DIN rail bracket required. Width is 45 mm, height 64 mm, depth 73 mm. Solid and finely stranded conductors with core end processing are accepted at 2x (0.25... 1.5 mm²) for the auxiliary contacts. For AWG, the auxiliary contacts accept 2x (24... 16). The main circuit conductor range is not detailed here, but the screw terminals are sized for typical motor-circuit wire gauges. ## Electrical ratings and environmental tolerance Auxiliary contact ratings are given per voltage: 2 A at 24 V, 4 A at 120 V, 3 A at 230 V. The NC contact count is 1; there are no CO contacts. EMC immunity includes 2 kV burst on power ports and 1 kV on signal ports per IEC 61000-4-4, severity degree 3 — sufficient for industrial panel environments with contactor switching and drive noise. Relative humidity during operation up to 100 % — no derating required for condensing conditions. Shock resistance is 15 g for 11 ms. Power dissipation per pole is 0.02 W, negligible in a contactor stack.","metaTitle":"Siemens 3RB2113-4RD0 SIRIUS solid-state overload relay, ATEX","metaDescription":"Siemens SIRIUS 3RB2113-4RD0 solid-state overload relay, 3 poles, adjustable trip class 5E-30E, ATEX Ex II (2) GD, 45mm wide. Current production. Sourced to order via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Overload Relays"],"specifications":{"Depth":"73 mm","Solid":"2x (0.25 ... 1.5 mm²)","Width":"45 mm","Height":"64 mm","Upwards":"0 mm","at 24 V":"2 A","at 60 V":"0.55 A","Forwards":"0 mm","Per Pole":"0.02 W","at 110 V":"0.3 A","at 120 V":"4 A","at 125 V":"0.3 A","at 220 V":"0.11 A","at 230 V":"3 A","Backwards":"0 mm","Downwards":"0 mm","Trip Class":"CLASS 5E, 10E, 20E and 30E 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":"Contactor mounting","Shock Resistance":"15g / 11 ms","Mounting Position":"any","Product Brand Name":"SIRIUS","Type Of Protection":"PTB 06 ATEX 3001 Ex II (2) GD","Product Designation":"solid-state overload relay","For Main Current Circuit":"screw-type terminals","Substance Prohibitance (Date)":"07/01/2006","For Auxiliary And Control Circuit":"spring-loaded terminals","Relative Humidity During Operation":"100 %","Surge Voltage Resistance Rated Value":"6 kV","for AWG cables for auxiliary contacts":"2x (24 ... 16)","due to burst according to IEC 61000-4-4":"2 kV (power ports), 1 kV (signal ports) corresponds to degree of severity 3","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 CO contacts for auxiliary contacts":"0","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","Size Of Contactor Can Be Combined Company-Specific":"S00","electrostatic discharge according to IEC 61000-4-2":"6 kV contact discharge / 8 kV air discharge","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":"690 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":"0.05 W","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"0.1 ... 0.4 A"}},"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=296398&mlfb=3RB2113-4RD0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RB2113-4RD0/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does this relay carry?","answer":"It carries ATEX certification PTB 06 ATEX 3001 Ex II (2) GD. RoHS compliance is indicated by a substance prohibitance date of 07/01/2006. The reference code per IEC 81346-2 is F."},{"question":"What are the key dimensions for panel layout?","answer":"Width 45 mm, height 64 mm, depth 73 mm. Mounting position any. Upwards, forwards, backwards, and downwards clearance all 0 mm — it sits flush against the contactor face."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB2113-4RD0","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/3RB2113-4RD0 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}}