{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB2025-1SB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB2025-1SB0","canonicalUrl":"https://aoctrl.com/siemens/3RB2025-1SB0","factsUrl":"https://aoctrl.com/api/mcp/products/3RB2025-1SB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state overload relay, 3RB2025-1SB0, Class 10E trip, contactor-mount, screw terminals, ATEX Ex II (2) GD, IP20 front.","salesMarkdown":"The Siemens 3RB2025-1SB0 is a SIRIUS solid-state overload relay with Class 10E trip curve. It mounts directly onto a contactor (contactor mounting), saving DIN-rail space in the panel and keeping the power loop short. Trip class CLASS 10E allows a 10-second overload before tripping. The auxiliary contact ratings cover the control circuit: 2 A at 24 V, 4 A at 120 V, 3 A at 230 V — enough to signal a PLC input or drop out a holding contactor. Mounts on a contactor — clips on without extra brackets. Screw-type terminals on the main circuit accept 0.5 to 4 mm² solid or 2× (0.5 to 2.5 mm²) stranded — standard panel wire sizes, no special ferrules needed. Mounting position is any, which helps when the panel layout is tight and you need to rotate the assembly. Shock rated at 15g / 11 ms, so it survives panel shipping and vibration on a machine frame. ATEX approval: PTB 06 ATEX 3001 Ex II (2) GD. EMC immunity: 2 kV burst on power ports, 1 kV on signal ports per IEC 61000-4-4 severity level 3 — adequate for industrial environments with contactor switching and drive noise.","metaTitle":"Siemens 3RB2025-1SB0 SIRIUS Solid-State Overload Relay, Clas","metaDescription":"Siemens 3RB2025-1SB0 SIRIUS solid-state overload relay, Class 10E trip, contactor-mount, 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":"75 mm","Solid":"0.5 ... 4 mm², 2x (0.5 ... 2.5 mm²)","Width":"45 mm","Height":"73 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 10E","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 (14 ... 10)","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","With Degree Of Pollution 3 Rated Value":"690 V","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","Electrostatic discharge acc. to IEC 61000-4-2":"6 kV contact discharge / 8 kV air discharge","Size of contactor can be combined company-specific":"S0","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":"3 ... 12 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=92189&mlfb=3RB2025-1SB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RB2025-1SB0/alternatives.json"},"ai":{"faq":[{"question":"What is 3RB2025-1SB0's listed depth?","answer":"75 mm — that's the dimension from the mounting surface to the front of the housing."},{"question":"What wire sizes does the 3RB2025-1SB0 accept?","answer":"Solid conductors from 0.5 to 4 mm², or two conductors from 0.5 to 2.5 mm² each, on the main circuit screw terminals."},{"question":"What compliance documentation does Siemens provide for 3RB2025-1SB0?","answer":"The part carries ATEX certification PTB 06 ATEX 3001 Ex II (2) GD for use in associated apparatus with gas/dust hazardous zones, plus EMC immunity per IEC 61000-4-4 severity level 3."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB2025-1SB0","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/3RB2025-1SB0 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}}