{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1016-1BB44","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1016-1BB44","canonicalUrl":"https://aoctrl.com/siemens/3RT1016-1BB44","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1016-1BB44","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S00 power contactor, 3RT1016-1BB44, 24 V DC coil, screw terminals, 45 mm width, IP20 front.","salesMarkdown":"## SIRIUS S00 power contactor, 24 V DC coil — what fits the BOM line It pulls 3.3 W on pick-up and holds at 3.3 W, so the DC supply doesn't need a big inrush allowance; a simple 24 VDC PSU sized for the holding load of several contactors works fine. Size S00 means it's compact: 45 mm wide, 57.5 mm tall, 111 mm deep. That's a standard 45 mm slot on a DIN rail — no special panel layout needed. The main circuit uses screw-type terminals that accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²) — also 1x 12 AWG. That covers the common motor feeder sizes up to about 4 mm² without needing bootlace ferrules, though ferruled stranded is fine. The front is IP20, side-by-side mounting is allowed, and the side clearance is 6 mm. ## Motor ratings and coordination — what the AC numbers mean for the load For motor switching, the AC-3 rating at 400 V is 4.5 kW, and at 690 V it's 5.5 kW. In AC-4 (reversing or inching) at 400 V it's rated 8.5 A, so if you're doing plugging or jogging, that's the current limit to watch. For coordination, with Type 2 coordination required, the fuse is gL/gG 20 A; with Type 1 coordination required, it's gL/gG 35 A. The operating current at AC-12 (resistive) is max 10 A. So this contactor lives in the 4–10 A motor range — not for big drives, but fine for small conveyors, pumps, fans, and compressors up to 5.5 kW. If you're comparing to the 3RT1016-1BB42 (same S00 frame, same coil voltage), the difference is in the auxiliary contact configuration — the 1BB44 carries 2 instantaneous contacts. That's enough for a standard three-wire start/stop circuit with a seal-in and a status feedback. The 1BB42 has a different auxiliary count; check your control schematic before swapping. Same footprint, same terminals, same rail — it's the aux contacts that decide fit. ## Panel integration — DIN rail, terminal wiring, and environment The 45 mm width matches standard 45 mm slot spacing; you can mount them side-by-side with 6 mm side clearance. Coil pick-up is 0.85 x rated voltage (20.4 V for a 24 V coil) and drop-out is 1.1 x rated voltage (26.4 V). That's the standard Siemens DC coil curve — it holds in at 85% and drops out above nominal. The DC coil doesn't hum, and the 3.3 W holding power means minimal heat in the panel.","metaTitle":"Siemens 3RT1016-1BB44 SIRIUS S00 Power Contactor, 24 V DC Co","metaDescription":"Siemens 3RT1016-1BB44 SIRIUS S00 power contactor, 24 V DC coil, 3.3 W holding power, screw terminals, 45 mm wide, IP20. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"111 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","Maximum":"2 000 m","At The Side":"6 mm","Rated Value":"24 V","On The Front":"IP20","Initial Value":"0.85","Mounting type":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Of The Terminal":"IP20","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Full-scale value":"1.1","Size of contactor":"S00","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","Instantaneous Contact":"2","Side-by-side mounting":"Yes","For Main Current Circuit":"screw-type terminals","Single Or Multi-Stranded":"2x (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²), max. 2x (0,75 ... 4 mm²)","at AC-2 at 400 V rated value":"4 kW","at AC-4 at 400 V rated value":"8.5 A","Closing power of magnet coil at DC":"3.3 W","Holding power of magnet coil at DC":"3.3 W","Operating current at AC-12 maximum":"10 A","With Type Of Assignment 2 Required":"fuse gL/gG: 20 A","at AWG conductors for main contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","With Type Of Coordination 1 Required":"fuse gL/gG: 35 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":"22 A","Type of voltage of the control supply voltage":"DC","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=139519&mlfb=3RT1016-1BB44","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1016-1BB44/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3RT1016-1BB44?","answer":"Submit an RFQ against this order code. Pricing and stock are confirmed at quote time through independent distribution — no live numbers on this page, but the quote will reflect the current market."},{"question":"What's the difference between 3RT1016-1BB44 and 3RT1016-1BB42?","answer":"Both are S00 size, 24 V DC coil contactors with the same footprint and terminal layout. The 1BB44 has 2 instantaneous auxiliary contacts; the 1BB42 has a different auxiliary count. Same rail, same wiring — check your control schematic for the aux contact count before substituting."},{"question":"What wire sizes does the 3RT1016-1BB44 accept?","answer":"Screw terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), max 2x (0.75 to 4 mm²), and 1x 12 AWG. Solid or ferruled stranded both work."},{"question":"What compliance documentation does Siemens provide for 3RT1016-1BB44?","answer":"The reference code per DIN EN 81346-2 is Q. Standard Siemens SIRIUS documentation includes the declaration of conformity, CE marking, and UL/CSA certifications — request the specific compliance pack with your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1016-1BB44","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/3RT1016-1BB44 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}}