{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1056-6AP38-0PA5","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1056-6AP38-0PA5","canonicalUrl":"https://aoctrl.com/siemens/3RT1056-6AP38-0PA5","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1056-6AP38-0PA5","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1056-6AP38-0PA5 power contactor, size S6, 220-240 VAC 50/60 Hz coil, screw-type coil terminals, screw fixing, 172 x 120 x 170 mm.","salesMarkdown":"The main power circuit accepts stranded conductors from 25 to 120 mm², while the auxiliary circuit handles solid or stranded wire from 0.5 to 4 mm² depending on the termination count. Mounting is by screw fixing, with the contactor sized at 172 mm high, 120 mm wide, and 170 mm deep. The S6 frame size indicates a contactor rated for higher motor currents typical of medium-to-large induction motors in the 30-75 kW range on 400 VAC three-phase, though the exact AC-3 rating is not listed here. The switching frequency varies by duty: up to 800 operations per hour in AC-1 resistive duty, 750 ops/h in AC-3 motor starting, and 130 ops/h in AC-4 plugging/reversing. Operating time is 40-60 ms on both AC and DC coil supplies, with an arcing time of 10-15 ms. The auxiliary switch (built-in) carries 10 A at 24 V, 2 A at 48 V or 60 V, and 1 A at 110 V. These are the ratings for the auxiliary contacts feeding PLC inputs or status lamps — stay within these limits to avoid contact welding. In a non-ventilated panel near a drive or transformer, the upper ambient limit of 60 °C is the binding constraint — derate switching frequency above 40 °C per the thermal curve. The closest peer is the 3RT1056-6AP36-0UA0, which shares the S6 frame but differs in coil voltage or auxiliary configuration. The -6AP38-0PA5 drops in without rewiring the coil circuit if the panel was wired for 220-240 VAC.","metaTitle":"Siemens 3RT1056-6AP38-0PA5 SIRIUS Power Contactor, 220-240 V","metaDescription":"Siemens SIRIUS 3RT1056-6AP38-0PA5 power contactor, size S6, 220-240 VAC 50/60 Hz coil, screw terminals, 170 mm depth. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"170 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"120 mm","at AC":"40 ... 60 ms","at DC":"40 ... 60 ms","title":"3RT1056-6AP38-0PA5","Height":"172 mm","Upwards":"10 mm","Forwards":"20 mm","Stranded":"25 ... 120 mm²","at 50 Hz":"0.8","at 60 Hz":"0.8","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"10 mm","Rated Value":"220 ... 240 V","description":"Power contactor, AC-3 185 A, 90 kW / 400 V AC (50-60 Hz) / DC operation 220-240 V UC Auxiliary contacts 2 NO + 2 NC solid-state-compatible, 3-pole, Size S6, Busbar connections Drive: conventional","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","Number Of Holes":"1","at AC-1 maximum":"800 1/h","at AC-2 maximum":"300 1/h","at AC-3 maximum":"750 1/h","at AC-4 maximum":"130 1/h","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-25 ... +60 °C","Fastening Method":"screw fixing","Full-Scale Value":"1.1","at AC-3e maximum":"750 1/h","Diameter Of Holes":"9 mm","Mounting Position":"with vertical mounting surface +/-90° rotatable, with vertical mounting surface +/- 22.5° tiltable to the front and back","Size Of Contactor":"S6","Solid Or Stranded":"2x (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²), max. 2x (0,75 ... 4 mm²)","Product Brand Name":"SIRIUS","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":"30 hp","at 400 V rated value":"3 A","at 440 V rated value":"1.4 A","at 480 V rated value":"180 A","at 50 Hz rated value":"220 ... 240 V","at 500 V rated value":"2 A","at 60 Hz rated value":"220 ... 240 V","at 600 V rated value":"192 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","at 1000 V rated value":"90 kW","For Auxiliary Contacts":"18 ... 14","Width Of Connection Bar":"17 mm","For Main Current Circuit":"Connection bar","at 200/208 V rated value":"60 hp","at 220/230 V rated value":"75 hp","at 460/480 V rated value":"150 hp","at 575/600 V rated value":"200 hp","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"8 kV","Thickness Of Connection Bar":"3 mm","at AC-3 rated value maximum":"1 000 V","at AC in hot operating state":"39 W","at AC-3e rated value maximum":"1 000 V","at AC-4 at 400 V rated value":"160 A","safety-related switching OFF":"Yes","Substance Prohibitance (Date)":"05/01/2012","Design Of The Surge Suppressor":"with varistor","Of Auxiliary Circuit Rated Value":"6 kV","at AC-5a up to 690 V rated value":"189 A","at AC-5b up to 400 V rated value":"153 A","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 315 A (690 V, 100 kA), aM: 200 A (690 V, 50 kA), BS88: 315 A (415 V, 50 kA)","Without Load Current Share Typical":"5.2 W","closing power of magnet coil at DC":"360 W","holding power of magnet coil at DC":"5.2 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","With Type Of Coordination 1 Required":"gG: 355 A (690 V, 100 kA)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"13 W","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","number of NO contacts for main contacts":"3","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":"3","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","mirror contact according to IEC 60947-4-1":"Yes","Type Of Voltage Of The Control Supply Voltage":"AC/DC","Limited To 1 S Switching At Zero Current Maximum":"2 900 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"2 084 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"1 480 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"968 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"801 A; Use minimum cross-section acc. to AC-1 rated value","contact rating of auxiliary contacts according to UL":"A600 / Q600","Of Main Circuit With Degree Of Pollution 3 Rated Value":"1 000 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":"500 V","For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (500 V, 1 kA)","minimum cross-section in main circuit at maximum AC-1 rated value":"95 mm²","number of NC contacts for auxiliary contacts instantaneous contact":"2","number of NO contacts for auxiliary contacts instantaneous contact":"2","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/48191814343ef1de12d436857500061f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=160884&mlfb=3RT1056-6AP38-0PA5"},"ai":{"faq":[{"question":"What are the physical dimensions of this contactor?","answer":"The 3RT1056-6AP38-0PA5 measures 172 mm high, 120 mm wide, and 170 mm deep. Mounting is by screw fixing with flexible orientation options."},{"question":"What wire sizes does the main circuit accept?","answer":"The main power circuit accepts stranded conductors from 25 to 120 mm². The auxiliary circuit accepts solid or stranded wire from 0.5 to 4 mm² depending on the number of conductors per terminal."},{"question":"Will the 3RT1056-6AP38-0PA5 drop into a panel specified for the 3RT1056-6AP36-0UA0?","answer":"Both share the S6 frame size and screw-fixing mounting, so the physical footprint is identical. The key difference is the coil voltage: the -6AP38-0PA5 is 220-240 VAC, so if the panel was wired for that voltage, it drops in without rewiring the coil circuit. Check auxiliary contact wiring."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1056-6AP38-0PA5","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/3RT1056-6AP38-0PA5 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}