{"product_id":"schneider-electric-9421lj4-circuit-breaker-operating-mechanism","title":"Schneider Electric 9421LJ4 Circuit Breaker Operating Mechanism","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SCHNEIDER ELECTRIC 9421LJ4 is a door-mounted, variable-depth circuit breaker operating mechanism designed for H\/J frame 250-ampere circuit breakers. Part of the Square D Class 9421 Type L series, it allows safe external operation of the breaker without opening the enclosure. The mechanism uses a 6-inch rotary lever handle connected to the breaker via a long shaft, available in a standard 10.75-inch or long 21.63-inch shaft length. Construction is all-metal and heavy duty, with built-in trip indication so technicians can confirm breaker status at a glance. Licensed electricians and industrial maintenance personnel are the primary installers for this type of accessory.\u003c\/p\u003e\n\u003cp\u003eThis operating mechanism is rated for NEMA 1, 3R, and 12 enclosures, making it suitable for indoor general-purpose, outdoor rainproof, and dust-tight applications. The right-side handle mounting location and long shaft configuration accommodate variable enclosure depths common in industrial and commercial panel installations. It is well suited for motor control centers, distribution panels, and switchgear enclosures where remote breaker operation through a closed door is required by code or safety protocol.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e6-inch rotary lever handle included; no separate handle purchase required\u003c\/li\u003e\n  \u003cli\u003eLong shaft connection accommodates standard 10.75-inch and long 21.63-inch shaft depths\u003c\/li\u003e\n  \u003cli\u003eAll-metal, heavy-duty construction with trip indication for quick status confirmation\u003c\/li\u003e\n  \u003cli\u003ePadlockable in the OFF position with up to three padlocks when enclosure door is open, simultaneously locking the door closed\u003c\/li\u003e\n  \u003cli\u003eCompatible with NEMA 1, 3R, and 12 enclosures for indoor and outdoor rainproof or dust-tight installations\u003c\/li\u003e\n  \u003cli\u003eRight-side handle mounting location suits standard door-mount configurations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with H\/J frame 250-ampere circuit breakers in NEMA 1, 3R, and 12 rated enclosures. Part of the Square D Class 9421 Type L door-mounted variable-depth operating mechanism series.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed electrician in accordance with applicable NEC requirements and the enclosure manufacturer guidelines. De-energize and lock out the circuit before mounting or adjusting the operating mechanism or connecting the shaft to the breaker. Verify shaft length selection matches the actual door-to-breaker depth before final assembly. Do not force the rotary lever if the breaker is in a tripped state; clear the fault and reset the breaker through proper procedure before re-closing.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHandle Type\u003c\/strong\u003e: 6 Inch Rotary Lever\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHandle Included\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBreaker Type\u003c\/strong\u003e: H\/J Frame 250 Ampere\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHandle to Device Connection\u003c\/strong\u003e: Long Shaft\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard Shaft Length\u003c\/strong\u003e: 10.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLong Shaft Length\u003c\/strong\u003e: 21.63 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHandle Mounting Location\u003c\/strong\u003e: Right\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Poles\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnclosure Rating\u003c\/strong\u003e: NEMA 1\/3R\/12\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 20.11 inches L x 10.70 inches W x 10.10 inches H\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Weight\u003c\/strong\u003e: 6.67 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e: Mexico\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty\u003c\/strong\u003e: 18 months\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: SCHNEIDER ELECTRIC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 9421LJ4\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SCHNEIDER ELECTRIC","offers":[{"title":"Default Title","offer_id":51284034158898,"sku":"9421LJ4","price":416.01,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/309279416.jpg?v=1781066732","url":"https:\/\/voomisupply.com\/products\/schneider-electric-9421lj4-circuit-breaker-operating-mechanism","provider":"Voomi Supply","version":"1.0","type":"link"}