{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2926-3AB31","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2926-3AB31","canonicalUrl":"https://aoctrl.com/siemens/3RT2926-3AB31","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2926-3AB31","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2926-3AB31 mechanical latch, 24 V AC/DC, for 3RT202/3RT232/3RT252 S0 contactors, screw-type terminals, IP20 front.","salesMarkdown":"The Siemens 3RT2926-3AB31 is a mechanical latch designed to hold a contactor closed without sustained coil power — useful for maintaining a circuit state during a control-voltage dropout or for applications where the contactor must stay engaged after a momentary signal. It fits SIRIUS S0 frame contactors: the 3RT202, 3RT232, and 3RT252 series. The latch clips onto the contactor front via the fastening method, adding 22 mm width to the assembly. ## Coil voltage and tolerance window Coil power draw is 4 W typical on DC and 4 VA typical on AC — low enough that a standard 24 VDC power supply or a small control transformer can drive it without derating. ## Wiring and environmental limits AWG equivalents are 2x 14 or 1x 12. The latch has no auxiliary contacts — it only provides the mechanical holding function. Mounting position is any orientation.","metaTitle":"Siemens 3RT2926-3AB31 Mechanical Latch, 24 V AC/DC","metaDescription":"Siemens 3RT2926-3AB31 mechanical latch for SIRIUS S0 contactors. 24 V AC/DC coil, screw terminals, IP20 front. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"84.3 mm","Solid":"2x (0.5 ... 2.5 mm²), 1x 4 mm²","Width":"22 mm","title":"3RT2926-3AB31","Height":"48.4 mm","at 50 Hz":"0.85 ... 1.1","at 60 Hz":"0.85 ... 1.1","description":"mechanical latch, 24 V AC/DC, for contactors 3RT202, 3RT232, 3RT252","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","Initial Value":"0.85","During Storage":"-50 ... +80 °C","Leading Contact":"0","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"clip-on","Full-Scale Value":"1.1","Lagging Switching":"0","Mounting Position":"any","Size Of Contactor":"S0","Solid Or Stranded":"0.5 ... 4 mm²","Product Brand Name":"SIRIUS","Product Designation":"mechanical latch","at 50 Hz rated value":"24 V","at 60 Hz rated value":"24 V","Instantaneous Contact":"0","Substance Prohibitance (Date)":"10/01/2009","protection class IP on the front":"IP20","Surge Voltage Resistance Rated Value":"4 kV","at AWG cables for auxiliary contacts":"2x 14, 1x 12","Finely Stranded With Core End Processing":"2x (0.5 ... 2.5 mm²), 1x 2.5 mm²","control supply voltage 1 at DC rated value":"24 V","power loss [W] of magnet coil at DC typical":"4 W","number of NC contacts for auxiliary contacts":"0","number of NO contacts for auxiliary contacts":"0","Type Of Voltage Of The Control Supply Voltage":"AC/DC","power loss [V∙A] of magnet coil at AC typical":"4 VA","Type Of Electrical Connection For Auxiliary And Control Circuit":"screw-type terminals","insulation voltage with degree of pollution 3 at AC rated value":"300 V","AWG number as coded connectable conductor cross section for auxiliary contacts":"14 ... 12"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$38.10","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c06216d048db3f19c4cbfacb487d926d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=409313&mlfb=3RT2926-3AB31"},"ai":{"faq":[{"question":"Is the Siemens 3RT2926-3AB31 compatible with 3RT202 contactors?","answer":"Yes, the 3RT2926-3AB31 is explicitly listed for use with 3RT202, 3RT232, and 3RT252 SIRIUS S0 frame contactors. It clips onto the front of the contactor."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2926-3AB31","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/3RT2926-3AB31 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}