{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RN2010-1CW30","brand":"Siemens","brandSlug":"siemens","productSlug":"3RN2010-1CW30","canonicalUrl":"https://aoctrl.com/siemens/3RN2010-1CW30","factsUrl":"https://aoctrl.com/api/mcp/products/3RN2010-1CW30","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RN2 thermistor motor protection relay, 3RN2010-1CW30, 24-240 V AC/DC supply, 17.5 mm wide, IP20, LED display.","salesMarkdown":"The Siemens 3RN2010-1CW30 is a SIRIUS 3RN2 thermistor motor protection relay — a compact evaluation unit that works with PTC thermistor sensors embedded in motor windings. It's designed to trip when the motor exceeds safe temperature, protecting against overload or cooling failure. The supply is rated 24-240 V AC/DC (50/60 Hz), so it fits both standard control voltages without needing a separate power supply. Output contacts are rated 1 A at 24 V, 0.2 A at 125 V, and 0.1 A at 250 V — these are dry switching levels for signaling to a PLC or contactor coil, not for direct motor loads. The unit auto-resets after the fault clears, which keeps a line restart automatic unless you wire the reset externally. There's no error memory, so a momentary power loss clears the trip state. It snaps onto 35 mm DIN rail (screw and snap-on) and measures 17.5 mm wide × 100 mm high × 90 mm deep — one standard module width. ## Wiring & Mounting Notes Terminals accept solid wire 20-12 AWG (1x or 2x 20-14 AWG for solid) and stranded 20-12 AWG. No clearance needed above, below, or to the sides (0 mm each direction), so you can pack modules tight on the rail. The LED display gives a quick visual on trip status without a multimeter.","metaTitle":"Siemens 3RN2010-1CW30 SIRIUS Thermistor Motor Protection Rel","metaDescription":"3RN2010-1CW30 SIRIUS thermistor motor protection relay from Siemens. Rated 24-240 V AC/DC supply, compact 17.5 mm wide, IP20, LED display. Current production — RFQ for your BOM lin","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Process / Temperature Controllers"],"specifications":{"Depth":"90 mm","Solid":"20 ... 12","Width":"17.5 mm","Height":"100 mm","Upwards":"0 mm","at 24 V":"1 A","Forwards":"0 mm","Stranded":"20 ... 12","at 125 V":"0.2 A","at 240 V":"0.15 ms","at 250 V":"0.1 A","Backwards":"0 mm","Downwards":"0 mm","auto-RESET":"Yes","At The Side":"0 mm","Rated Value":"24 ... 240 V","Error Memory":"No","Initial Value":"0.85","During Storage":"-40 ... +85 °C","External Reset":"No","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-40 ... +85 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail","Full-Scale Value":"1.1","Product Category":"SIRIUS 3RN2 thermistor motor protection","Product Function":"thermistor motor protection","Mounting Position":"any","Product Brand Name":"SIRIUS","Between The Outputs":"Yes","Degree Of Pollution":"3","Product Designation":"Thermistor motor protection relay","at AWG cables solid":"1x (20 ... 12), 2x (20 ... 14)","display version LED":"Yes","protection class IP":"IP20","at 50 Hz rated value":"24 ... 240 V","at 60 Hz rated value":"24 ... 240 V","Design Of The Product":"Compact evaluation unit, suitable for bimetallic switch","Between Input And Output":"Yes","Relative Metering Precision":"9 %","Substance Prohibitance (Date)":"05/28/2009","Type Of Electrical Connection":"screw-type terminals","Dynamic Open-Circuit Detection":"No","Material Of Switching Contacts":"AgSnO2","Operating Frequency Rated Value":"50 ... 60 Hz","For Auxiliary And Control Circuit":"screw-type terminals","Design Of The Electrical Isolation":"galvanic isolation","Relative Humidity During Operation":"70 %","Surge Voltage Resistance Rated Value":"4 kV","due to burst according to IEC 61000-4-4":"2 kV (power ports) / 1 kV (signal ports)","reference code according to IEC 81346-2":"K","Finely Stranded With Core End Processing":"0.5 ... 4 mm²","Tightening Torque With Screw-Type Terminals":"0.6 ... 0.8 N·m","number of CO contacts for auxiliary contacts":"0","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","shock resistance according to IEC 60068-2-27":"11g / 15 ms","Between The Voltage Supply And Other Circuits":"Yes","Type Of Voltage Of The Control Supply Voltage":"AC/DC","vibration resistance according to IEC 60068-2-6":"10 ... 55 Hz: 0.35 mm","Mechanical Service Life (Operating Cycles) Typical":"10 000 000","electrostatic discharge according to IEC 61000-4-2":"6 kV contact discharge / 8 kV air discharge","Buffering Time In The Event Of Power Failure Minimum":"40 ms","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Thermal Current Of The Switching Element With Contacts Maximum":"5 A","continuous current of the DIAZED fuse link of the output relay":"6 A","Product Component Removable Terminal For Auxiliary And Control Circuit":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/3RN2010-1CW30/alternatives.json"},"ai":{"faq":[{"question":"What wire sizes does it accept?","answer":"Solid wire 20-12 AWG (1x) or 20-14 AWG (2x), and stranded 20-12 AWG. Use the right ferrule for stranded to avoid loose strands under the screw."},{"question":"Does it auto-reset after a trip?","answer":"Yes, it has auto-reset enabled by default. There's no external reset input, so a power cycle or clearing the fault will reset it automatically."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RN2010-1CW30","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/3RN2010-1CW30 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}}