{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB2113-4PB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB2113-4PB0","canonicalUrl":"https://aoctrl.com/siemens/3RB2113-4PB0","factsUrl":"https://aoctrl.com/api/mcp/products/3RB2113-4PB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state overload relay, 3RB2113-4PB0, adjustable trip class 5E/10E/20E/30E, contactor mounting, IP20 front, ATEX Ex II (2) GD.","salesMarkdown":"The Siemens 3RB2113-4PB0 is a SIRIUS solid-state overload relay — no bimetals, no heater elements, just a semiconductor-based trip that tracks true motor heating. The trip class is field-adjustable between CLASS 5E, 10E, 20E and 30E, so you can dial it in for standard motor start (10E) or a high-inertia load that needs the 30E curve to ride through the start without nuisance tripping. That means it tucks tight into a crowded panel where every millimeter counts. The IP20 front protection keeps fingers and tools out of the terminal area, but the body is open to the panel — standard for contactor-mounted overloads inside a cabinet. Main circuit terminals are screw-type, accepting solid conductors from 0.5 to 4 mm² (or 2x 0.5 to 2.5 mm²). Finely stranded wire with ferrule takes 0.5 to 2.5 mm² (2x 0.5 to 1.5 mm²). AWG equivalents for the main contacts are 2x 18 to 14 AWG. Strip length and torque follow standard Siemens terminal practice — no special tooling needed. ## EMC and surge robustness The relay withstands burst transients per IEC 61000-4-4 at 2 kV on power ports and 1 kV on signal ports (severity level 3). That puts it well within the immunity requirements for industrial environments with contactors and drives switching nearby.","metaTitle":"Siemens 3RB2113-4PB0 SIRIUS Solid-State Overload Relay, Adju","metaDescription":"Siemens 3RB2113-4PB0 SIRIUS solid-state overload relay. Adjustable trip class 5E-30E, contactor mounting, IP20 front, ATEX Ex II (2) GD. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Overload Relays"],"specifications":{"Depth":"73 mm","Solid":"0.5 ... 4 mm², 2x (0.5 ... 2.5 mm²)","Width":"45 mm","Height":"64 mm","Maximum":"2 000 m","Upwards":"0 mm","at 24 V":"2 A","at 60 V":"0.55 A","Forwards":"0 mm","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","On The Front":"IP20","Mounting type":"Contactor mounting","During Storage":"-40 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-40 ... +80 °C","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 Auxiliary Contacts":"0","For Main Current Circuit":"screw-type terminals","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"0.05 W","Relative humidity during operation":"100 %","due to burst acc. to IEC 61000-4-4":"2 kV (power ports), 1 kV (signal ports) corresponds to degree of severity 3","at AWG conductors for main contacts":"2x (18 ... 14)","Surge voltage resistance rated value":"6 kV","Reference code acc. to DIN EN 81346-2":"F","at AC in hot operating state per pole":"0.02 W","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","at AWG conductors for auxiliary contacts":"2x (20 ... 14)","For Auxiliary And Control Current Circuit":"screw-type terminals","Number of NC contacts for auxiliary contacts":"1","Number of NO contacts for auxiliary contacts":"1","with degree of pollution 3 at AC rated value":"690 V","Electrostatic discharge acc. to IEC 61000-4-2":"6 kV contact discharge / 8 kV air discharge","Size of contactor can be combined company-specific":"S00","due to conductor-earth surge acc. to IEC 61000-4-5":"2 kV (line to earth) corresponds to degree of severity 3","Removable Terminal For Auxiliary And Control Circuit":"Yes","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 6 A","Adjustable pick-up value current of the current-dependent overload release":"1 ... 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=70860&mlfb=3RB2113-4PB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RB2113-4PB0/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to 3RB2113-4PB0?","answer":"The closest functional peer is the Siemens 3RU2116-1FC1, a bimetallic overload relay in the same SIRIUS family. The 3RB2113-4PB0 is solid-state with adjustable trip class; the 3RU2116-1FC1 uses a thermal bimetal with fixed class 10A. They share the same contactor-mounting footprint and terminal arrangement, so a panel wired for one can accept the other without rewiring — but the trip curve behavior is different, so verify coordination with your motor and starter."},{"question":"Where can I buy 3RB2113-4PB0?","answer":"This part is sourced and quoted to order against an RFQ through our independent distribution network. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment."},{"question":"What compliance documentation does Siemens provide for 3RB2113-4PB0?","answer":"The relay carries ATEX certification PTB 06 ATEX 3001 Ex II (2) GD for gas and dust atmospheres. It also meets IEC 61000-4-4 burst immunity at severity level 3 and is rated for 6 kV surge voltage. Standard Siemens declarations of conformity (CE, UKCA) and the ATEX certificate are available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB2113-4PB0","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/3RB2113-4PB0 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}}