{"product_id":"3rh1921-1ea11","title":"3RH1921-1EA11 - 1NO-1NC  Aux. Contact","description":"\u003cp\u003e\u003cstrong\u003e3RH1921-1EA11 - 1NO-1NC  Aux. Contact\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhen you need to add auxiliary contacts to a Siemens contactor, you don’t want to overthink it—you want something that fits right, works every time, and doesn’t slow you down. The Siemens 3RH1921-1EA11 auxiliary switch block does exactly that. Built for the SIRIUS 3RT series contactors, this side-mounted auxiliary switch gives you a simple way to add 1 normally open (NO) and 1 normally closed (NC) contact for signaling or control. It’s a go-to option for handling feedback circuits, interlocks, or status indication in just about any control panel setup. What stands out here is how straightforward it is. The snap-on mounting clicks into place without hassle, and the screw terminals keep wiring secure without fighting with the connection. Once it’s in, it stays put—and more importantly, it keeps working. With a mechanical life rated around 10 million cycles, this isn’t something you’ll be replacing anytime soon. It’s compact, dependable, and designed for real-world use where panels get tight and uptime matters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features and Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1NO + 1NC configuration:\u003c\/strong\u003e Covers most control and signaling needs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade for Siemens 3RT contactors:\u003c\/strong\u003e Clean, proper fit with no guesswork\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSide-mount, snap-on design:\u003c\/strong\u003e Quick install, no extra tools needed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong operating life:\u003c\/strong\u003e Built for high-cycle applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact footprint:\u003c\/strong\u003e Doesn’t eat up panel space\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScrew terminals:\u003c\/strong\u003e Simple, secure wiring connections\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalog Number:\u003c\/strong\u003e 3RH1921-1EA11\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e SIRIUS 3RH19\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContacts:\u003c\/strong\u003e 1 NO + 1 NC (instantaneous)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Insulation Voltage:\u003c\/strong\u003e 500 V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurge Voltage Rating:\u003c\/strong\u003e 6 kV\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAC-12 Current:\u003c\/strong\u003e Up to 10 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAC-15 Current:\u003c\/strong\u003e 6 A (230 V), 3 A (400 V)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDC-13 Current:\u003c\/strong\u003e Up to 6 A (24 V)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical Life:\u003c\/strong\u003e ~10,000,000 operations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Life:\u003c\/strong\u003e ~200,000 operations (AC-15, 230 V)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection Rating:\u003c\/strong\u003e IP20\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Snap-on, side-mounted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Type:\u003c\/strong\u003e Screw terminals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWire Size:\u003c\/strong\u003e 0.5–2.5 mm² (20–14 AWG)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 80 mm x 10 mm x 71 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temp:\u003c\/strong\u003e -25°C to +60°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMaterial Compliance and Certifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRoHS compliant\u003c\/li\u003e\n\u003cli\u003eREACH compliant\u003c\/li\u003e\n\u003cli\u003eMeets IEC 60947 standards\u003c\/li\u003e\n\u003cli\u003eSupports mirror contact function (with compatible contactors)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhere It Works Best\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eControl panels and industrial enclosures\u003c\/li\u003e\n\u003cli\u003eMotor starters and MCCs\u003c\/li\u003e\n\u003cli\u003eAutomation systems\u003c\/li\u003e\n\u003cli\u003eHVAC control setups\u003c\/li\u003e\n\u003cli\u003eConveyor and production equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003cbr\u003e\n\u003cdiv\u003e\n\u003cblockquote\u003e\n\u003cp style=\"font-size: 12px;\"\u003e\u003cem\u003eUse of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer.\u003cstrong\u003e CIRCUIT BREAKER SUPERSTORE®\u003c\/strong\u003e is an independent reseller and is \u003cstrong\u003enot \u003c\/strong\u003ean authorized distributor, affiliate, or representative of any manufacturer. Manufacturer warranties do \u003cstrong\u003enot\u003c\/strong\u003e apply unless expressly stated. All trademarks and registered trademarks are the property of their respective owners.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp style=\"font-size: 12px;\"\u003e\u003cem\u003eSiemens®, I-T-E®, and Murray® are registered trademarks of Siemens AG. Products sold are surplus, used, or refurbished and are \u003cstrong\u003eNOT \u003c\/strong\u003esupplied by Siemens AG or its affiliates.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"SIEMENS","offers":[{"title":"New","offer_id":51699079053611,"sku":"3RH1921-1EA11","price":75.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":51699079086379,"sku":"3RH1921-1EA11 [R]","price":65.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/store.circuitbreakersuperstore.com\/products\/3rh1921-1ea11","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}