{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1024-1CP04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1024-1CP04","canonicalUrl":"https://aoctrl.com/siemens/3RT1024-1CP04","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1024-1CP04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1024-1CP04, S0 frame power contactor, screw terminals, varistor, 7.5 kW at 500/690 V, 45 mm wide.","salesMarkdown":"## SIRIUS S0 power contactor, screw terminals, varistor suppression The Siemens 3RT1024-1CP04 is a SIRIUS S0-frame power contactor for motor switching in control panels, with screw-type main circuit terminals and a built-in varistor surge suppressor. Rated motor output reaches 7.5 kW at both 500 V and 690 V, with an AC-4 switching current of 12.5 A at 400 V — this is the reversing or inching duty rating, not the continuous AC-3 figure, so it governs frequent jogging applications. Type 1 coordination allows a 63 A gL/gG fuse. The varistor integrated across the coil suppresses voltage spikes during de-energization, reducing stress on the control circuit. Auxiliary contact ratings are specified per voltage: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 0.3 A at 220 V — the DC switching curve drops sharply above 60 V (2 A at 60 V, 1 A at 110 V). Use these numbers for pilot duty and PLC input circuits, not the main contact ratings. ## Environmental and physical fit Dimensions are 88 mm height, 45 mm width, and 140 mm depth — the depth is the critical clearance behind the DIN rail for wiring and arc chamber ventilation. Side-by-side mounting is allowed without derating if ambient stays within limits.","metaTitle":"Siemens 3RT1024-1CP04 SIRIUS Power Contactor, S0, 7.5 kW at","metaDescription":"Siemens SIRIUS 3RT1024-1CP04 power contactor, S0 frame, screw terminals, varistor surge suppression, 7.5 kW at 500/690 V, current production. RFQ for BOM line.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"140 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"45 mm","Height":"88 mm","Maximum":"2 000 m","at 50 Hz":"0.8 ... 1.1","At The Side":"6 mm","On The Front":"IP20","1 Rated Value":"50 Hz","Mounting type":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Of The Terminal":"IP00","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Size of contactor":"S0","Product brand name":"SIRIUS","Degree of pollution":"3","Product designation":"power contactor","at 24 V rated value":"10 A","at 60 V rated value":"2 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 220 V rated value":"0.3 A","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 50 Hz rated value":"230 V","at 500 V rated value":"7.5 kW","at 690 V rated value":"7.5 kW","Instantaneous Contact":"2","Side-by-side mounting":"Yes","For Main Current Circuit":"screw-type terminals","Single Or Multi-Stranded":"2x (1 ... 2,5 mm²), 2x (2,5 ... 6 mm²), max. 2x 10 mm²","at AC-2 at 400 V rated value":"5.5 kW","at AC-4 at 400 V rated value":"12.5 A","Design of the surge suppressor":"with varistor","Operating current at AC-12 maximum":"10 A","With Type Of Assignment 2 Required":"fuse gL/gG: 25 A","at AWG conductors for main contacts":"2x (16 ... 12), 2x (14 ... 10), 1x 8","With Type Of Coordination 1 Required":"fuse gL/gG: 63 A","Reference code acc. to DIN EN 81346-2":"Q","Number of NC contacts for main contacts":"0","Number of NO contacts for main contacts":"3","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":"3","at AWG conductors for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"screw-type terminals","at ambient temperature 40 °C rated value":"40 A","Apparent holding power of magnet coil at AC":"7.8 V·A","Apparent pick-up power of magnet coil at AC":"61 V·A","Type of voltage of the control supply voltage":"AC","Inductive power factor with closing power of the coil":"0.82","Inductive power factor with the holding power of the coil":"0.24","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","Of The Contactor With Added Electronics-Compatible 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=436966&mlfb=3RT1024-1CP04","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1024-1CP04/alternatives.json"},"ai":{"faq":[{"question":"What are the main power ratings for this contactor?","answer":"It delivers 7.5 kW at 500 V and 7.5 kW at 690 V. The AC-4 switching current is 12.5 A at 400 V, covering reversing and inching duty."},{"question":"What type of surge suppression does it have?","answer":"A varistor is built in across the coil as the surge suppressor, handling voltage spikes during coil de-energization."},{"question":"What are the terminal wire ranges for the main circuit?","answer":"Screw terminals accept solid/stranded: 2x (0.5...1.5 mm²), 2x (0.75...2.5 mm²), max 2x (0.75...4 mm²). AWG equivalents: 2x (16...12), 2x (14...10), 1x 8."},{"question":"What is the depth of this contactor?","answer":"Depth is 140 mm, which is the dimension behind the DIN rail for wiring and arc chamber clearance."},{"question":"Does this contactor replace 3RT1017-1AP01 without rewiring?","answer":"Both are SIRIUS S0-frame contactors with the same 45 mm width and DIN-rail mounting, so the mechanical footprint is identical. However, the 3RT1024-1CP04 includes a built-in varistor and has different coil ratings, so verify the control voltage and surge suppression match your panel design before substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1024-1CP04","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/3RT1024-1CP04 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}}