{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH7131-1AN20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH7131-1AN20","canonicalUrl":"https://aoctrl.com/siemens/3RH7131-1AN20","factsUrl":"https://aoctrl.com/api/mcp/products/3RH7131-1AN20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS contactor relay, 3RH7131-1AN20, Size S00, 3 NO + 1 NC auxiliary contacts, AC coil, screw-type terminals, IP20 front, snap-on 35 mm DIN rail.","salesMarkdown":"The Siemens SIRIUS 3RH7131-1AN20 is a Size S00 contactor relay with a 31 E contact configuration — 3 normally open and 1 normally closed auxiliary contacts, all rated for PLC-level reliability at 17 V, 5 mA. The AC coil draws 27 VA pick-up and 5.4 VA holding, with a closing power factor of 0.8 and holding power factor of 0.27. Rated operational currents span 6 A at 24 V, 230 V, and 400 V, dropping to 1 A at 690 V and 0.3 A at 220 V. The 45 mm width and 72 mm depth fit a standard S00 footprint — three units occupy roughly 135 mm of rail, leaving room for a 4-pole breaker alongside in a 400 mm wide enclosure. Screw-type terminals accept 2x 0.5 to 4 mm² solid or stranded, or 2x 0.5 to 2.5 mm² ferruled. The 8 mm strip length and spring-cage alternative aren't listed here — this is a screw clamp, so torque the terminal to the value on the nameplate, not feel. The 18 kV surge voltage resistance means this relay withstands the switching transients common in motor control centers without external suppression on the coil — though adding an RC snubber across the coil terminals is still good practice for long wire runs. The DC-13 operating frequency of 1 000 1/h (roughly one operation every 3.6 seconds) suits high-cycle applications like conveyor indexing or packaging machine gates. Contact reliability at 17 V, 5 mA is explicitly rated for PLC input compatibility — the silver-alloy contacts are gold-flashed or treated to avoid oxidation at dry-circuit levels. This means you can wire this relay's NO contacts directly to a 24 VDC PLC input card without worrying about contact wetting current. Shock resistance of 15g for 5 ms sine pulse and 10g for 5 ms rectangular pulse covers most industrial vibration profiles — think crushers, presses, or overhead cranes. The storage temperature range of -25 to +70 °C and operating range of -10 to +55 °C are standard for indoor panel installation; derate if mounted near a heat source like a VFD or braking resistor.","metaTitle":"Siemens SIRIUS 3RH7131-1AN20 Contactor Relay, 3NO+1NC, AC Co","metaDescription":"Siemens SIRIUS 3RH7131-1AN20 contactor relay, Size S00, 3 NO + 1 NC auxiliary contacts, AC coil, screw terminals, IP20 front, current lifecycle stage. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"72 mm","Width":"45 mm","title":"3RH7131-1AN20","Height":"57.5 mm","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","description":"Contactor relay 3NO1NC AC 220V 50/60Hz size S00, screw terminal","During Storage":"-25 ... +70 °C","lifecycle_stage":"current","During Operation":"-10 ... +55 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail","Mounting Position":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface","Size Of Contactor":"S00","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Product Brand Name":"SIRIUS","Product Designation":"Contactor relay","at 24 V rated value":"6 A","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":"6 A","at 50 Hz rated value":"220 V","at 60 Hz rated value":"220 V","at 690 V rated value":"1 A","protection class IP on the front":"IP20","Product Extension Auxiliary Switch":"Yes","Surge Voltage Resistance Rated Value":"18 kV","operating frequency at DC-13 maximum":"1 000 1/h","shock resistance with sine pulse at AC":"15g / 5 ms, 8g / 10 ms","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Contact Reliability Of Auxiliary Contacts":"acceptability for PLC control (17 V, 5 mA)","apparent holding power of magnet coil at AC":"5.4 VA","apparent pick-up power of magnet coil at AC":"27 VA","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"3","Type Of Voltage Of The Control Supply Voltage":"AC","shock resistance at rectangular impulse at AC":"10g / 5 ms, 5g / 10 ms","Inductive Power Factor With Closing Power Of The Coil":"0.8","Identification Number And Letter For Switching Elements":"31 E","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.27","Type Of Electrical Connection For Auxiliary And Control Circuit":"screw-type terminals","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Design Of The Fuse Link For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/5d1f33e53b72ae3619907b14dd50a58a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1533819&mlfb=3RH7131-1AN20"},"ai":{"faq":[{"question":"What are the key dimensions of 3RH7131-1AN20?","answer":"Width is 45 mm, depth is 72 mm, height is 57.5 mm. It mounts on 35 mm DIN rail via screw or snap-on."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH7131-1AN20","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/3RH7131-1AN20 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}}