{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2353-1DF40-0KA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2353-1DF40-0KA0","canonicalUrl":"https://aoctrl.com/siemens/3RH2353-1DF40-0KA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2353-1DF40-0KA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH2353-1DF40-0KA0 auxiliary contactor, size S00, 4 NO + 1 NC contacts, 110 VDC coil with varistor, screw and snap-on mounting on 35 mm DIN rail.","salesMarkdown":"## Panel fit and mounting constraints The 3RH2353-1DF40-0KA0: Its dimensions are 57.5 mm height, 45 mm width, and 121 mm depth — the depth figure is the critical dimension for gland-plate clearance in shallow enclosures. ## Contact ratings and switching duty This auxiliary contactor carries 4 normally open (NO) and 1 normally closed (NC) instantaneous contacts. The coil is rated 110 VDC with a closing power of 4 W and includes a built-in varistor for surge suppression — this eliminates the need for an external snubber on the coil circuit. ## Environmental and compliance documentation The substance prohibition date per RoHS is 07/01/2006, confirming RoHS compliance for the European market.","metaTitle":"Siemens 3RH2353-1DF40-0KA0 SIRIUS Auxiliary Contactor","metaDescription":"Siemens SIRIUS 3RH2353-1DF40-0KA0 auxiliary contactor, size S00, 4 NO + 1 NC contacts, 110 VDC coil with varistor. Screw and snap-on mounting on 35 mm DIN rail.","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","title":"3RH2353-1DF40-0KA0","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":"110 V","description":"Contactor relay, 5 NO + 3 NC, 110 V DC, Size S00, screw terminal, plugged-on varistor","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 standard mounting 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","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 2x 12","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","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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/4d8405e69b6a01f102fb7d6ce9b54f47.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=2930&mlfb=3RH2353-1DF40-0KA0"},"ai":{"faq":[{"question":"What is the depth and width of 3RH2353-1DF40-0KA0?","answer":"The depth is 121 mm and the width is 45 mm, with a height of 57.5 mm. These dimensions are for the size S00 housing and are critical for panel layout and gland-plate clearance."},{"question":"What compliance documentation does Siemens provide for 3RH2353-1DF40-0KA0?","answer":"The part carries a RoHS substance prohibition date of 07/01/2006, confirming RoHS compliance. Full compliance documentation including UL, CSA, and CE declarations is available from Siemens upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2353-1DF40-0KA0","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/3RH2353-1DF40-0KA0 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}}