{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK1323-5CS44-3AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK1323-5CS44-3AA0","canonicalUrl":"https://aoctrl.com/siemens/3RK1323-5CS44-3AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RK1323-5CS44-3AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens reversing starter, 3RK1323-5CS44-3AA0, 9 A AC-3 at 400 V, 100 kA SCCR, IP65, DC 24 V, AS-Interface.","salesMarkdown":"## Reversing starter with AS-Interface, IP65, 9 A AC-3 The Siemens 3RK1323-5CS44-3AA0 is a reversing starter designed for motor control in distributed automation architectures. It carries a 9 A rated operational current in AC-3 duty at 400 V, meaning it directly switches a 3-phase induction motor up to that current — roughly 4 kW at 400 V — in forward/reverse applications. Supply is 24 V DC nominal, with a rated range of 20.4 to 28.8 V DC and an absolute maximum of 31.6 V DC. The operating voltage for the motor circuit is 400 to 500 V AC. The enclosure is rated IP65, so the unit is suitable for washdown environments or outdoor installation in a cabinet — no additional enclosure needed for dust or hose-directed water. ## AS-Interface communication and I/O This reversing starter communicates via AS-Interface (AS-i) shaped cables using the cutting/clamping method for both data transmission and supply voltage. It has 4 digital inputs, each terminated via M12 sockets, and 2 of those inputs are dedicated to digital input signals. There are no digital outputs on this variant. The inputs are parameterizable. Device addressing is done via a front addressing socket. The main energy infeed and load-side outgoing feeder use sockets per ISO 23570. This standardized connector interface means the unit mates with pre-wired harnesses or distribution boxes that follow that standard — no custom cabling for the power path. ## Motor protection and switching Motor protection is solid-state, so the overload curve is electronic rather than bimetallic — no thermal memory drift, and the trip class is typically adjustable via parameterization. The switching contact is mechanical, meaning the power path uses a conventional electromechanical contactor, not a semiconductor output. The minimum operating frequency is 1 cycle per hour, which is a design constraint for applications requiring infrequent reversals.","metaTitle":"Siemens 3RK1323-5CS44-3AA0 Reversing Starter, 9 A AC-3, IP65","metaDescription":"Siemens 3RK1323-5CS44-3AA0 reversing starter. 9 A AC-3 at 400 V, 100 kA SCCR, IP65. DC 24 V supply. Current production. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"Depth":"91 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":"solid-state","at AC-3 at 400 V rated value":"9 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":"mechanical","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":"4 000 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":"2.4 ... 9 A"}},"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=444588&mlfb=3RK1323-5CS44-3AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RK1323-5CS44-3AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the IP rating and enclosure type?","answer":"The protection class is IP65, meaning it is dust-tight and protected against water jets. It is a reversing starter designed for distributed mounting without a separate enclosure."},{"question":"What communication protocol does this reversing starter use?","answer":"It communicates via AS-Interface (AS-i) using shaped cables with the cutting/clamping method for both data and supply voltage. It does not support PROFIBUS DP or PROFINET."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK1323-5CS44-3AA0","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/3RK1323-5CS44-3AA0 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}}