{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2916-2FA22","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2916-2FA22","canonicalUrl":"https://aoctrl.com/siemens/3RH2916-2FA22","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2916-2FA22","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch block, 2 NO + 2 NC, spring-loaded terminals, 10 A max, snap-on mounting for 3RT2 contactors and 3RH2 contactor relays.","salesMarkdown":"The Siemens 3RH2916-2FA22 is a front-mounted auxiliary switch block in the SIRIUS family, designed to snap onto 3RT2 contactors and 3RH2 contactor relays. It provides 2 normally-open and 2 normally-closed contacts, with the current paths arranged as 1 NO, 1 NC, 1 NC, 1 NO — a sequence that matters when you're wiring interlocking or feedback circuits and need to know which contact opens or closes first. Rated at 10 A maximum, the contacts are specified for both AC and DC switching across a wide voltage range. At 24 V AC the contacts carry 6 A; at 230 V AC they carry 6 A; at 400 V AC they carry 3 A. For DC loads at 24 V the rated current is 10 A, dropping to 0.26 A at 600 V DC. The AC-15 rating at 690 V is 1 A — that's the inductive load rating for solenoid and contactor coils, so this block is suited for pilot-duty switching in control circuits. Mechanical life is 1,000,000 operating cycles typical. Termination is via spring-loaded terminals, accepting 2x (0.5 to 1.5 mm²) with ferrule and 2x (0.5 to 2.5 mm²) without. ## Panel Integration Snap-on mounting directly onto the contactor or relay body — no DIN rail required for the switch block itself, though the base contactor mounts to DIN rail. The 36 mm width, 47.7 mm depth, and 41.5 mm height mean it adds minimal footprint to the contactor assembly. Verify the 3RT2 or 3RH2 base unit's auxiliary slot compatibility; this block occupies the front position. Spring-loaded terminals reduce wiring time compared to screw terminals — no torque driver needed, and the cage accepts solid or ferruled stranded wire. The 2x (20 to 14 AWG) range covers common control wiring sizes.","metaTitle":"Siemens 3RH2916-2FA22 SIRIUS Auxiliary Switch, 2NO+2NC, 10A,","metaDescription":"Siemens 3RH2916-2FA22 SIRIUS auxiliary switch block, 2 NO + 2 NC contacts, rated 10 A maximum. Spring-loaded terminals, snap-on mounting for 3RT2/3RH2 contactors. IP20 front. Avail","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Note":"with 3RH2","Depth":"47.7 mm","Width":"36 mm","title":"3RH2916-2FA22","Height":"41.5 mm","Maximum":"10 A","at 24 V":"6 A","at 60 V":"2 A","at 110 V":"1 A","at 125 V":"6 A","at 220 V":"0.3 A","at 230 V":"6 A","at 250 V":"6 A","at 400 V":"3 A","description":"auxiliary switch, on the front, 2 NO + 2 NC,.3/.4,.1/.2,.1/.2,.3/.4, current path: 1 NO, 1 NC, 1 NC, 1 NO, spring-loaded terminal, for contactors 3RT2 and contactor relays 3RH2","During Storage":"-55 ... +80 °C","Leading Contact":"0","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"snap-on mounting","Lagging Switching":"0","Product Brand Name":"SIRIUS","Suitability For Use":"Contactor relay and power contactor","at 24 V rated value":"10 A","at 60 V rated value":"4.7 A","at 110 V rated value":"3 A","at 220 V rated value":"1.2 A","at 440 V rated value":"0.5 A","at 600 V rated value":"0.26 A","Instantaneous Contact":"2","With Core End Processing":"2x (0.5 ... 1.5 mm²)","Without Core End Processing":"2x (0.5 ... 2.5 mm²)","at AC-15 at 690 V rated value":"1 A","protection class IP on the front":"IP20","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 14)","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Mechanical Service Life (Operating Cycles) Typical":"1 000 000","Type Of Electrical Connection For Auxiliary And Control Circuit":"spring-loaded terminals","insulation voltage with degree of pollution 3 at AC rated value":"690 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/db595b648c6832d78886a61e6a71a153.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=359280&mlfb=3RH2916-2FA22"},"ai":{"faq":[{"question":"What is 3RH2916-2FA22's listed note (with 3RH2) on this component line?","answer":"The note indicates this auxiliary switch is designed for use with 3RH2 contactor relays (and 3RT2 contactors) — it snaps onto the front of those base units."},{"question":"What is 3RH2916-2FA22's listed depth (47.7 mm) on this component line?","answer":"The depth is 47.7 mm, measured from the mounting face to the outermost point of the spring-loaded terminal housing. This is the dimension that projects forward from the contactor body."},{"question":"Will 3RH2916-2FA22 drop into a panel that was specified around 3RH2122-2AV60 without rewiring?","answer":"Both are front-mounted auxiliary blocks for the same SIRIUS contactor platform, so the mechanical fit and snap-on mounting are identical. However, the 3RH2916-2FA22 uses spring-loaded terminals while the 3RH2122-2AV60 may use screw terminals — verify the wiring termination type matches your existing panel's preparation before assuming a drop-in swap."},{"question":"Where can I buy the 3RH2916-2FA22?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial offer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2916-2FA22","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/3RH2916-2FA22 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}}