{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2353-1DE40-0KA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2353-1DE40-0KA0","canonicalUrl":"https://aoctrl.com/siemens/3RH2353-1DE40-0KA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2353-1DE40-0KA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, size S00, 3RH2353-1DE40-0KA0, 5 N/O instantaneous contacts, 24 VDC coil with integrated varistor, screw and snap-on 35 mm DIN rail mounting, 121 mm depth × 45 mm width × 57.5 mm height.","salesMarkdown":"The coil pulls in on 24 VDC with a closing power of 4 W, and the integrated varistor suppresses the inductive kick — no external snubber needed across the coil terminals. ## Switching capacity and contact ratings The contacts are rated for the full range of control voltages you'd expect in a panel: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V. At 60 V the rating drops to 4.7 A; at 220 V it's 1.2 A. The arcing time sits between 10 and 15 ms, and the mechanical life is a typical 10 million operations. That's a contact block built for high-cycle applications like conveyor interlocking or valve sequencing. The size S00 footprint — 45 mm wide, 57.5 mm tall, 121 mm deep — fits the compact slot in a motor starter combination or control panel. Relative humidity minimum 10 %. RoHS compliance date of July 1, 2006 is on record. The varistor surge suppressor is built into the design, so the part meets the usual CE and UL requirements for auxiliary contactors in this class.","metaTitle":"Siemens 3RH2353-1DE40-0KA0 SIRIUS Auxiliary Contactor, 5 N/O","metaDescription":"Siemens SIRIUS 3RH2353-1DE40-0KA0 auxiliary contactor, size S00, 5 instantaneous N/O contacts, 24 VDC coil with varistor, screw and snap-on 35 mm DIN rail mounting, current product","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"121 mm","Width":"45 mm","at AC":"10 000 1/h","at DC":"7 ... 13 ms","Height":"57.5 mm","Upwards":"10 mm","Forwards":"10 mm","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","Rated Value":"60 V","Initial Value":"0.8","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail","Full-Scale Value":"1.1","Mounting Position":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface","Size Of Contactor":"S00","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Product Brand Name":"SIRIUS","Degree Of Pollution":"3","Product Designation":"Auxiliary contactor","at 24 V rated value":"10 A","at 60 V rated value":"4.7 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"3 A","at 220 V rated value":"1.2 A","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 440 V rated value":"0.5 A","at 500 V rated value":"2 A","at 600 V rated value":"0.26 A","at 690 V rated value":"1 A","Instantaneous Contact":"5","Relative Humidity Minimum":"10 %","Substance Prohibitance (Date)":"07/01/2006","Design Of The Surge Suppressor":"with varistor","Product Extension Auxiliary Switch":"No","closing power of magnet coil at DC":"4 W","holding power of magnet coil at DC":"4 W","Surge Voltage Resistance Rated Value":"6 kV","operating frequency at DC-12 maximum":"1 000 1/h","operating frequency at DC-13 maximum":"1 000 1/h","operational current at AC-12 maximum":"10 A","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 2x 12","reference code according to IEC 81346-2":"K","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","with low demand rate according to SN 31920":"40 %","with high demand rate according to SN 31920":"73 %","number of NC contacts for auxiliary contacts":"3","number of NO contacts for auxiliary contacts":"5","Type Of Voltage Of The Control Supply Voltage":"DC","contact rating of auxiliary contacts according to UL":"A600 / Q600","Identification Number And Letter For Switching Elements":"53 E","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Type Of Electrical Connection For Auxiliary And Control Circuit":"screw-type terminals","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Design Of The Fuse Link For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","design of the miniature circuit breaker for short-circuit protection of the auxiliary circuit up to 230 V":"C characteristic: 6 A; 0.4 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/b676c2beaf5cc24d483d0d695e3d40e0.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=19725&mlfb=3RH2353-1DE40-0KA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH2353-1DE40-0KA0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2353-1DE40-0KA0","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/3RH2353-1DE40-0KA0 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}}