{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1016-1VB42","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1016-1VB42","canonicalUrl":"https://aoctrl.com/siemens/3RT1016-1VB42","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1016-1VB42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT1016-1VB42, Size S00, 24 VDC coil with integrated diode suppression, 45 mm wide, IP20, screw terminals.","salesMarkdown":"The DC coil is rated at 24 V and pulls a constant 1.4 W whether closing or holding, which simplifies the power supply sizing. An integrated diode handles surge suppression right on the coil, so you don't need to add an external flyback diode across the coil terminals. ## Ratings that matter for the motor circuit For AC-3 duty — the standard for squirrel-cage motor starting — this contactor is rated to switch 4.5 kW at 500 V and 5.5 kW at 690 V. That's the number that decides whether it handles your motor load without welding contacts. The auxiliary contact ratings are given at several voltage levels: 10 A at 24 V, 6 A at 230 V, and 3 A at 400 V. That covers pilot duty for PLC inputs or relay coils downstream. With Type of Coordination 2, the recommended fuse is a gL/gG 20 A; for Type 1 coordination, a 35 A fuse is specified. That keeps the contactor from welding under a short-circuit fault when the upstream breaker clears it. ## Mechanical fit and environment The contactor body is 45 mm wide, 57.5 mm tall, and 72 mm deep — a compact footprint that fits tightly on a 35 mm DIN rail. The enclosure carries IP20 on the front and at the terminals — that's finger-safe but not sealed, so it belongs inside a panel, not out in a washdown zone. Wire sizes accepted: solid or stranded from 0.5 to 4 mm² on the main contacts, with AWG equivalents of 2x (20–16), 2x (18–14), or 1x 12. That handles standard motor leads up to about 4–5.5 kW.","metaTitle":"Siemens SIRIUS 3RT1016-1VB42 Power Contactor, 24 VDC, Size S","metaDescription":"Siemens SIRIUS 3RT1016-1VB42 power contactor, 24 VDC coil, Size S00, 45 mm wide, IP20. Active production. Available to order. Rated for AC-3 motor switching up to 5.5 kW at 690 V.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"72 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"45 mm","Height":"57.5 mm","Rated Value":"24 V","On The Front":"IP20","Initial Value":"0.85","Of The Terminal":"IP20","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Full-Scale Value":"1.85","Size Of Contactor":"S00","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","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":"30 000 000","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 500 V rated value":"4.5 kW","at 690 V rated value":"5.5 kW","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-2 at 400 V rated value":"4 kW","at AC-4 at 400 V rated value":"8.5 A","Substance Prohibitance (Date)":"01.07.2006 00:00:00","Design Of The Surge Suppressor":"with diode","at AWG cables for main contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","For Auxiliary And Control Circuit":"screw-type terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 20 A","closing power of magnet coil at DC":"1.4 W","holding power of magnet coil at DC":"1.4 W","reference code acc. to IEC 81346-2":"Q","With Type Of Coordination 1 Required":"fuse gL/gG: 35 A","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","operational current at AC-12 maximum":"10 A","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","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Type Of Voltage Of The Control Supply Voltage":"DC","Required Spacing For Grounded Parts At The Side":"6 mm","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","number of NC contacts for auxiliary contacts instantaneous contact":"1","number of NO contacts for auxiliary contacts instantaneous contact":"0"}},"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=434337&mlfb=3RT1016-1VB42","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1016-1VB42/alternatives.json"},"ai":{"faq":[{"question":"Will 3RT1016-1VB42 drop into a panel that was specified around 3RT1016-1BB42 without rewiring?","answer":"The 3RT1016-1VB42 shares the same Size S00 frame and 45 mm width as the 3RT1016-1BB42, so the mechanical footprint and DIN-rail mounting are identical. The main difference is the coil: the -1VB42 uses a 24 VDC coil with integrated diode suppression, while the -1BB42 uses a 24 VAC coil. If the panel was wired for AC coil control, you'd need to swap the coil supply to DC — the terminals and wiring space are the same."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1016-1VB42","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/3RT1016-1VB42 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}}