{"product_id":"siemens-3rh1921-1ha13-auxiliary-contact-block","title":"Siemens 3RH1921-1HA13 Auxiliary Contact Block","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SIEMENS 3RH1921-1HA13 is an auxiliary contact block designed to expand the switching capability of compatible contactors and relay assemblies. This accessory module mounts directly to the base contactor and provides additional contact positions for control circuit signaling, interlocking, and status feedback functions. At 0.139 pounds and compact dimensions of 2.008 inches by 1.772 inches by 2.520 inches, the unit fits into tight panel spaces without requiring additional rail space. Licensed electricians and industrial control technicians install this type of component during panel builds, motor control center assemblies, and equipment retrofit projects.\u003c\/p\u003e\n\u003cp\u003eAuxiliary contact blocks of this type are used in commercial and industrial electrical installations where the main contactor's built-in contacts are insufficient for the control scheme. Common applications include motor starters, HVAC equipment control panels, pump control circuits, and automated machinery. The block provides discrete signal contacts that feed PLCs, relay logic, or indicator circuits alongside the primary load-switching function of the base contactor.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCompact form factor at 2.008 x 1.772 x 2.520 inches for space-constrained enclosures\u003c\/li\u003e\n  \u003cli\u003eLightweight construction at 0.139 pounds\u003c\/li\u003e\n  \u003cli\u003eSnap-on mounting style for direct attachment to compatible Siemens contactor bodies\u003c\/li\u003e\n  \u003cli\u003eProvides supplemental contacts for control circuit interlocking and status signaling\u003c\/li\u003e\n  \u003cli\u003eSold individually as a single unit per pack\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style auxiliary contact block for use with compatible Siemens contactor and relay platforms. Consult the Siemens product documentation for confirmed base contactor fitment before installation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed electrician in accordance with NEC requirements and local jurisdiction codes. De-energize and lock out the panel or motor control center before attaching or removing any contact block. Verify that the auxiliary block orientation and contact arrangement match the control schematic before restoring power. Do not force the snap-on mounting clip, as misalignment can damage the contact bridge inside the block.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions (L x W x H)\u003c\/strong\u003e: 2.008 inches x 1.772 inches x 2.520 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.139 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity per Pack\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC\u003c\/strong\u003e: 75455475828\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SIEMENS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 3RH1921-1HA13\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SIEMENS","offers":[{"title":"Default Title","offer_id":51383879008562,"sku":"3RH1921-1HA13","price":61.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/312675280.jpg?v=1782610396","url":"https:\/\/voomisupply.com\/products\/siemens-3rh1921-1ha13-auxiliary-contact-block","provider":"Voomi Supply","version":"1.0","type":"link"}