{"product_id":"square-d-9999so5-contactor-auxiliary-contact","title":"Square D 9999SO5 Contactor Auxiliary Contact","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SQUARE D 9999SO5 is a contactor auxiliary contact designed for use with overload relay assemblies in motor control and load switching applications. Auxiliary contacts expand the signal and control circuit capability of a contactor without interfering with the main power contacts. This accessory mounts directly to compatible contactor or overload relay bodies, giving control panels an additional monitored contact point for interlocking, status indication, or circuit logic. Electricians and control panel technicians typically install this part as part of a motor starter build or a panel retrofit. The compact form factor keeps installation straightforward in tight enclosures.\u003c\/p\u003e\n\u003cp\u003eThis auxiliary contact is suited for commercial and industrial motor control installations where contractors require supplementary contact blocks on overload relay assemblies. Common applications include motor starters, reversing contactors, and combination starter assemblies found in mechanical rooms, pump stations, and industrial process panels. It is installed during new panel builds or as a replacement contact block when an existing auxiliary contact fails or is damaged during service.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eAuxiliary contact configuration adds supplementary control circuit contact points to compatible overload relay assemblies\u003c\/li\u003e\n  \u003cli\u003eCompact dimensions of 3.1 inches length by 2.3 inches width by 1.4 inches height allow installation in tight enclosure layouts\u003c\/li\u003e\n  \u003cli\u003eLightweight construction at 0.1 pounds minimizes added load to the contactor assembly\u003c\/li\u003e\n  \u003cli\u003eDirect-mount accessory design integrates with the contactor or overload relay body without additional hardware\u003c\/li\u003e\n  \u003cli\u003ePackaged as a single unit for precise replacement or single-position panel builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement auxiliary contact for use with overload relay assemblies in compatible contactor configurations.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed electrician. De-energize and lock out the control panel per NFPA 70E and NEC guidelines before handling any contactor or relay components. The auxiliary contact block snaps or bolts onto the contactor or overload relay body according to the assembly design — consult the specific contactor manufacturer documentation for mounting orientation and attachment method. Verify contact alignment and secure attachment before re-energizing the panel.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAccessory Type\u003c\/strong\u003e: Auxiliary Contact\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFor Use With\u003c\/strong\u003e: Overload Relay\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 3.1 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 2.3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 1.4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: SQUARE D\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 9999SO5\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SCHNEIDER ELECTRIC","offers":[{"title":"Default Title","offer_id":51542872883506,"sku":"9999SO5","price":167.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/9fa83627a2dffc1e198ac0dc0277ab60.jpg?v=1785909489","url":"https:\/\/voomisupply.com\/products\/square-d-9999so5-contactor-auxiliary-contact","provider":"Voomi Supply","version":"1.0","type":"link"}