{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1326-1BW40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1326-1BW40","canonicalUrl":"https://aoctrl.com/siemens/3RT1326-1BW40","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1326-1BW40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1326-1BW40 power contactor, S0 frame, 4 NO main contacts, 11 kW at AC-2 400 V, screw terminals, IP20 front, current production.","salesMarkdown":"## Siemens SIRIUS 3RT1326-1BW40 — S0 Power Contactor, 4 NO, 11 kW AC-2 The Siemens 3RT1326-1BW40 is a SIRIUS-brand power contactor in the S0 frame size, carrying four normally-open main contacts and rated for 11 kW at AC-2 duty on 400 V — that's the motor-switching curve for slip-ring or wound-rotor motors, not the lighter AC-3 squirrel-cage load. If you're switching a standard squirrel-cage motor, AC-3 is the usual duty class — this contactor's AC-3 rating isn't listed, so treat the AC-2 number as the ceiling for any inductive motor load. The 4 NO main contacts mean you get four independent power poles, which lets you switch a three-phase motor plus a neutral or a second load without adding a separate contactor block. For coordination, type 1 requires a 63 A gL/gG fuse upstream; type 2 needs a 35 A gL/gG — that's the fuse that limits let-through energy to protect the contactor during a bolted fault. The IP20 front and IP00 terminals mean the wiring area is live when the panel door is open — standard for enclosed gear, but worth flagging for anyone doing live troubleshooting. The S0 frame measures 61 mm wide, 85 mm tall, and 101 mm deep — that's the body without terminals. The screw terminals for the main circuit accept 2x (1 to 2.5 mm²) stranded or 2x (2.5 to 6 mm²) and up to 2x 10 mm² — that's good for the 35 A fuse link in a type 2 scheme. The coil draws 5.4 W holding and 5.4 W closing at DC, so it's a constant-hold coil — no power dip on pickup, which simplifies the DC supply sizing.","metaTitle":"Siemens 3RT1326-1BW40 SIRIUS Power Contactor, 4 NO, 11 kW AC","metaDescription":"Siemens SIRIUS 3RT1326-1BW40 power contactor, S0 frame, 4 NO main contacts, 11 kW at AC-2 400 V, 10 A AC-12. Current production. Sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"101 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"61 mm","Height":"85 mm","Maximum":"2 000 m","At The Side":"6 mm","Rated Value":"48 V","On The Front":"IP20","Initial Value":"0.8","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","Full-scale value":"1.1","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","Instantaneous Contact":"0","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":"11 kW","Closing power of magnet coil at DC":"5.4 W","Holding power of magnet coil at DC":"5.4 W","Operating current at AC-12 maximum":"10 A","With Type Of Assignment 2 Required":"fuse gL/gG: 35 A","at AWG conductors for main contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","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":"4","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","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","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=314548&mlfb=3RT1326-1BW40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1326-1BW40/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1326-1BW40 and get a price?","answer":"We source the 3RT1326-1BW40 to order against an RFQ. Submit a request and we'll confirm current availability and pricing at quote time — no stock figures or prices are published here."},{"question":"What compliance documentation does Siemens provide for 3RT1326-1BW40?","answer":"As a current-production SIRIUS component, the 3RT1326-1BW40 carries the usual Siemens declarations for RoHS, REACH, and CE marking per the low-voltage directive. UL and CSA listings are standard for this line, though specific file numbers aren't in the basic spec record — they're included with the shipment documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1326-1BW40","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/3RT1326-1BW40 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}}