{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2535-3XF40-0LA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2535-3XF40-0LA2","canonicalUrl":"https://aoctrl.com/siemens/3RT2535-3XF40-0LA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2535-3XF40-0LA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT2535-3XF40-0LA2, S2 size, DC coil 110 V, spring-type terminals, screw and snap-on mounting on 35 mm DIN rail.","salesMarkdown":"## Integrator's first read Its DC coil is rated at 110 V, with a spring-type terminal connection for the magnet coil — no screw torque to verify on that circuit, just strip and insert. ## DC switching capacity — what the ratings mean The contactor's DC switching capacity is specified per voltage level, not as a single maximum current. At 24 V it handles 10 A; at 48 V and 60 V, 2 A; at 110 V, 1 A; at 220 V, 0.3 A; at 400 V, 3 A; at 600 V, 0.1 A. These are the make/break ratings for DC loads — resistive or slightly inductive — and they drop sharply above 24 V because DC arcs sustain longer than AC. For AC-4 duty (switching motor loads with inrush), the maximum switching frequency is 300 operations per hour. Main contacts are configured as 3 normally open (3 NO) for the power circuit, plus one auxiliary switch (1 NO/1 NC) for feedback or interlocking. The inrush current peak for the coil is 1.5 A. ## Panel layout and wiring Dimensions: 75 mm wide, 114 mm high, 130 mm deep. These are the minimum free air gaps around the contactor for arc flash and heat dissipation — factor them into your DIN-rail layout. Terminals accept solid or stranded conductors: 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) per clamp. The spring-type coil terminal is the same gauge range — no ferrule required but recommended for stranded wire to avoid fraying. The lifecycle stage for 3RT2535-3XF40-0LA2 is listed as current production. No phase-out or last-time-buy notice is attached to this order code.","metaTitle":"Siemens SIRIUS 3RT2535-3XF40-0LA2 Power Contactor, DC Coil 1","metaDescription":"Siemens SIRIUS 3RT2535-3XF40-0LA2 power contactor, DC coil 110 V, spring-type terminals, S2 size. Rated for AC-4 switching at 300 1/h. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"130 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Width":"75 mm","at DC":"30 ... 55 ms","Height":"114 mm","Upwards":"10 mm","Forwards":"10 mm","Downwards":"10 mm","Arcing Time":"10 ... 20 ms","At The Side":"6 mm","Rated Value":"110 V","Initial Value":"0.7","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Spring-type terminals","Type Of Voltage":"DC","at AC-4 maximum":"300 1/h","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-40 ... +70 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 50022","Full-Scale Value":"1.25","For Main Contacts":"18 ... 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":"S2","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Inrush Current Peak":"1.5 A","Product Designation":"Power contactor","at 24 V rated value":"10 A","at 48 V rated value":"2 A","at 60 V rated value":"2 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 125 V rated value":"0.9 A","at 220 V rated value":"0.3 A","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 440 V rated value":"1 A","at 500 V rated value":"2 A","at 600 V rated value":"0.1 A","at 690 V rated value":"1 A","Design Of The Product":"With extended operating range","Instantaneous Contact":"1","Side-By-Side Mounting":"Yes","For Auxiliary Contacts":"20 ... 14","For Main Current Circuit":"screw-type terminals","Locked-Rotor Current Peak":"0.8 A","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"6 kV","at AC-3 rated value maximum":"400 V","at maximum AC-1 rated value":"16 mm²","at AC-4 at 400 V rated value":"35 A","Substance Prohibitance (Date)":"10/01/2009","Design Of The Surge Suppressor":"with varistor","Duration Of Inrush Current Peak":"50 µs","Locked-Rotor Current Mean Value":"0.45 A","Duration Of Locked-Rotor Current":"230 ms","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"spring-loaded terminals","Function Module For Communication":"No","Product Function Bus Communication":"No","With Type Of Assignment 2 Required":"gG: 63A (690V, 100kA)","closing power of magnet coil at DC":"23 W","holding power of magnet coil at DC":"1 W","At Contactor For Auxiliary Contacts":"Spring-type terminals","With Type Of Coordination 1 Required":"gG: 125 A (690 V, 100 kA)","operational current at AC-12 maximum":"10 A","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","number of NC contacts for main contacts":"2","number of NO contacts for main contacts":"2","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Number Of Poles For Main Current Circuit":"4","Product Function Short Circuit Protection":"No","mirror contact according to IEC 60947-4-1":"Yes","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","Type Of Voltage Of The Control Supply Voltage":"DC","contact rating of auxiliary contacts according to UL":"A600 / P600","Of Main Circuit With Degree Of Pollution 3 Rated Value":"690 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Of Auxiliary Circuit With Degree Of Pollution 3 Rated Value":"690 V","For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (500 V, 1 kA)","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1035109&mlfb=3RT2535-3XF40-0LA2","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2535-3XF40-0LA2/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to 3RT2535-3XF40-0LA2?","answer":"The 3RT2535-1AB00 and 3RT2535-1AD00 are the same S2 frame size and main contact configuration, but their coil voltages differ — 1AB00 is 24 V AC, 1AD00 is 110 V AC. The 3RT2535-3XF40-0LA2 uses a 110 V DC coil with spring-type terminals, so a swap requires verifying the control circuit voltage and terminal type."},{"question":"What is the depth of 3RT2535-3XF40-0LA2?","answer":"The depth is 130 mm."},{"question":"What conductor cross-sections does the 3RT2535-3XF40-0LA2 accept?","answer":"Solid or stranded: 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) per clamp."},{"question":"Where can I buy 3RT2535-3XF40-0LA2 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2535-3XF40-0LA2","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/3RT2535-3XF40-0LA2 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}}