{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RN2010-1CA30","brand":"Siemens","brandSlug":"siemens","productSlug":"3RN2010-1CA30","canonicalUrl":"https://aoctrl.com/siemens/3RN2010-1CA30","factsUrl":"https://aoctrl.com/api/mcp/products/3RN2010-1CA30","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RN2010-1CA30 thermistor motor protection relay, 24 V AC/DC, 1 A at 24 V output, auto-reset, LED, screw and snap-on 35 mm DIN rail, IP20.","salesMarkdown":"The Siemens 3RN2010-1CA30 is a SIRIUS 3RN2 thermistor motor protection relay — a compact evaluation unit designed for bimetallic switch sensors. It runs on a 24 V AC/DC supply and its output switches 1 A at 24 V, which is enough to drive a downstream contactor coil or PLC input directly. Auto-reset is enabled out of the box, so it clears the fault latch once the motor cools below the PTC threshold; no external reset button needed. ## Mounting and fit The 17.5 mm width (one module) means it takes up a single slot in a terminal-block-style rail assembly. Clearance around the housing: 0 mm upwards, forwards, backwards, downwards, and at the side — it can sit flush against other devices or the panel wall with no extra air gap. ## Output and reset behaviour The output is rated 1 A at 24 V, 0.2 A at 125 V, and 0.1 A at 250 V — so keep the load within those limits, especially if you're switching an AC contactor coil at line voltage. Galvanic isolation between the output and the input is confirmed, and also between the two output channels if you're using the dual-channel variant. The LED on the front gives a visual trip indication, which helps during commissioning or fault-finding without needing a meter.","metaTitle":"Siemens 3RN2010-1CA30 SIRIUS Thermistor Motor Protection Rel","metaDescription":"Siemens SIRIUS 3RN2010-1CA30 thermistor motor protection relay. 24 V AC/DC supply, 1 A at 24 V output, auto-reset, LED indication. Current production. DIN rail mount. IP20.","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 250 V":"0.1 A","Backwards":"0 mm","Downwards":"0 mm","auto-RESET":"Yes","At The Side":"0 mm","Rated Value":"24 ... 24 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","display version LED":"Yes","protection class IP":"IP20","at 50 Hz rated value":"24 ... 24 V","at 60 Hz rated value":"24 ... 24 V","for AWG cables solid":"1x (20 ... 12), 2x (20 ... 14)","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":"No","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/3RN2010-1CA30/alternatives.json"},"ai":{"faq":[{"question":"Will the 3RN2010-1CA30 drop into a panel designed for a 3RT1015-1BB42 contactor?","answer":"Not as a direct swap — the 3RN2010-1CA30 is a thermistor motor protection relay, while the 3RT1015-1BB42 is a contactor. They serve different functions. The 3RN2010-1CA30 would typically be wired to monitor motor PTC thermistors and its output drives a contactor coil (like the 3RT series) to disconnect the motor on overheat. It fits the same 35 mm DIN rail and shares the 17.5 mm module width, so it can sit adjacent to the contactor in the panel."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RN2010-1CA30","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/3RN2010-1CA30 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}}