{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2353-1CU00-0KA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2353-1CU00-0KA0","canonicalUrl":"https://aoctrl.com/siemens/3RH2353-1CU00-0KA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2353-1CU00-0KA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, 3RH2353-1CU00-0KA0, size S00, 5 NO instantaneous contacts, screw and snap-on mounting on 35 mm DIN rail, 117 mm depth, 45 mm width.","salesMarkdown":"## S00 auxiliary contactor with 5 NO The Siemens 3RH2353-1CU00-0KA0 is a SIRIUS auxiliary contactor in size S00, carrying five normally-open instantaneous contacts. It is designed for control-circuit switching — interlocks, signal feedback, and logic-level isolation inside a motor starter or contactor assembly. At 400 V AC it still switches 3 A, so it can break control transformer primaries or small solenoid valves directly. The DC arc extinguishes more slowly than AC, so the current drops sharply above 110 V — a factor to check if this contactor is used in a DC control bus or battery-backed circuit. The degree of pollution is 3, meaning it tolerates conductive dust and condensation typical of industrial enclosures without conformal coating. ## Panel fit and mounting flexibility These are the minimum air gaps to adjacent metalwork or other devices — crowding them reduces the dielectric withstand and can cause tracking under pollution degree 3 conditions. The part carries RoHS compliance with a substance prohibition date of 07/01/2006.","metaTitle":"Siemens 3RH2353-1CU00-0KA0 SIRIUS Auxiliary Contactor, 5 NO","metaDescription":"Siemens SIRIUS auxiliary contactor 3RH2353-1CU00-0KA0, 5 NO contacts, size S00, 117 mm depth. Current production. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"117 mm","Width":"45 mm","at AC":"4 ... 15 ms","at DC":"10 000 1/h","title":"3RH2353-1CU00-0KA0","Height":"57.5 mm","Upwards":"10 mm","Forwards":"10 mm","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","description":"Contactor relay, 5 NO + 3 NC, 240 V AC, 50 / 60 Hz, Size S00, screw terminal, 2 NO + 2 NC basic unit / EN Varistor plugged on","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","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","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 50 Hz rated value":"240 V","at 500 V rated value":"2 A","at 60 Hz rated value":"240 V","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","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 %","apparent holding power of magnet coil at AC":"5.7 VA","apparent pick-up power of magnet coil at AC":"37 VA","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":"AC","contact rating of auxiliary contacts according to UL":"A600 / Q600","Inductive Power Factor With Closing Power Of The Coil":"0.8","Identification Number And Letter For Switching Elements":"53 E","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.25","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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/001caee8571a7bcebeaa6758b7e13e54.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=449697&mlfb=3RH2353-1CU00-0KA0"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2353-1CU00-0KA0","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/3RH2353-1CU00-0KA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}