{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1323-6BS74-3AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1323-6BS74-3AA0","canonicalUrl":"https://aoctrl.com/siemens/3RK1323-6BS74-3AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1323-6BS74-3AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens reversing starter, solid-state, 3RK1323-6BS74-3AA0, 3 A at AC-3 400 V, 100 kA SCCR, IP65, 4 digital inputs, AS-i bus communication.","salesMarkdown":"The Siemens 3RK1323-6BS74-3AA0 is a solid-state reversing starter designed for motor control in distributed automation architectures. The IP65 enclosure means the entire unit — electronics, I/O connections, and bus interface — is sealed against dust and low-pressure water jets. That makes it a straight drop into washdown zones, outdoor conveyor sections, or food-grade areas where a panel-mounted starter would need a separate enclosure. Communication rides on the AS-i bus, with PROFIBUS DP and PROFINET not supported on this variant. The supply voltage and communication both route through AS-i shaped cables using the cutting/clamping method. For a 400 V three-phase motor, that covers small drives. Operating voltage spans 400 to 500 V. The control supply is 24 V DC nominal (20.4 to 28.8 V range, max 31.6 V). Four digital inputs are onboard, two via M12 sockets. That's enough for limit switches, E-stop feedback, or position sensors local to the starter. The form factor is a reversing starter with dimensions of 130 mm wide, 250 mm high, and 107 mm deep. That's another SKU that won't share a bin with the 3RT contactor series — the 3RT1055-6LA06, 3RT1044-1FB46, and 3RT1054-1AB36 are electromechanical contactors, not solid-state reversing starters with integrated AS-i communication. If your panel was laid out for one of those, this unit won't drop in without rewiring the bus and control connections. ## Integration notes Mounting is via the IP65 enclosure — no DIN rail inside the housing. The unit connects to the AS-i network through the cutting/clamping method on shaped cable, so plan for that cable type in your BOM. The main energy infeed and load-side outgoing feeder both use sockets per ISO 23570, which is a standardized connector interface for distributed motor starters. Device addressing is done through a front addressing socket, not DIP switches under a cover. That's convenient if the starter is mounted in a tight spot — you can address it without pulling the unit off the machine frame. The motor protection is full motor protection, meaning it includes overload and short-circuit protection internally.","metaTitle":"Siemens 3RK1323-6BS74-3AA0 Reversing Starter, 3A AC-3, IP65","metaDescription":"Siemens 3RK1323-6BS74-3AA0 reversing starter, solid-state, 3A at AC-3 400V, 100kA SCCR, IP65, 4 digital inputs, AS-i bus communication. Current production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"Depth":"107 mm","Width":"130 mm","at DC":"24 ... 24 V","Height":"250 mm","Type Of Voltage":"DC","lifecycle_stage":"current","Bus Communication":"Yes","PROFINET protocol":"No","at DC rated value":"20.4 ... 28.8 V","Type Of Assignment":"1","Maximum Permissible":"31.6 V","Minimum Permissible":"26.5 V","protection class IP":"IP65","PROFIBUS DP protocol":"No","at 400 V rated value":"100 kA","Design Of The Product":"reversing starter","For Device Addressing":"front addressing socket","For Main Energy Infeed":"socket according to ISO23570","supply voltage 1 at DC":"30 ... 30 V","Number Of Digital Inputs":"4","Short Circuit Protection":"Yes","For Digital Input Signals":"2","For Digital Output Signals":"0","1 For Digital Input Signals":"M12 socket","2 For Digital Input Signals":"M12 socket","Operating Frequency Minimum":"1 1/h","brake control with 180 V DC":"No","brake control with 400 V AC":"No","For Supply Voltage Line-Side":"via AS-I shaped cables with cutting/clamping method","Type Of The Motor Protection":"full motor protection","at AC-3 at 400 V rated value":"3 A","For Load-Side Outgoing Feeder":"socket according to ISO23570","Operating Voltage Rated Value":"400 ... 500 V","Substance Prohibitance (Date)":"05/01/2012","Digital Inputs Parameterizable":"Yes","For Communication Transmission":"via AS-I shaped cables with cutting/clamping method","Of The Communication Interface":"via AS-I shaped cables with cutting/clamping method","Design Of The Switching Contact":"solid-state","Digital Outputs Parameterizable":"No","For Supply Voltage Transmission":"via AS-I shaped cables with cutting/clamping method","Design Of Short-Circuit Protection":"fuse","Ambient Temperature During Operation":"-20 ... +40 °C","Product Component Motor Brake Output":"No","reference code according to IEC 81346-2":"Q","Number Of Poles For Main Current Circuit":"3","control supply voltage at DC rated value":"20.4 ... 28.8 V","protocol is supported AS-Interface protocol":"Yes","operating power at AC-3 at 400 V rated value":"1 100 W","At The Manufacturer-Specific Device Interface":"M12 socket","Type Of Voltage Of The Control Supply Voltage":"DC","Type Of Electrical Connection For Main Current Circuit":"tab terminals","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"0.3 ... 3 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$878.84","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=48526&mlfb=3RK1323-6BS74-3AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RK1323-6BS74-3AA0/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for this reversing starter?","answer":"The key ratings are 3 A at AC-3 duty at 400 V for motor switching, a 100 kA SCCR at 400 V, operating voltage of 400 to 500 V, and a 24 V DC control supply. It has 4 digital inputs and communicates via AS-i bus."},{"question":"What is the physical size of the 3RK1323-6BS74-3AA0?","answer":"It measures 130 mm wide, 250 mm high, and 107 mm deep in its IP65 enclosure."},{"question":"Does the 3RK1323-6BS74-3AA0 replace a 3RT1055-6LA06 contactor?","answer":"No. The 3RK1323-6BS74-3AA0 is a solid-state reversing starter with integrated AS-i communication and an IP65 enclosure. The 3RT1055-6LA06 is an electromechanical contactor. They are not form-fit-function replacements; a panel designed for the 3RT series would need rewiring for the AS-i bus and different mounting."},{"question":"What compliance documentation is available for this part?","answer":"The evidence records a substance prohibition date of 05/01/2012, indicating RoHS compliance. Standard Siemens documentation for CE, UL, and other certifications should be available through the manufacturer's support portal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1323-6BS74-3AA0","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/3RK1323-6BS74-3AA0 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}}