The Schneider LV848165 is a rear bottom connection accessory from the MasterPact range, sized for 4-pole fixed drawout breakers. The 115 mm connection pitch matches the standard rear terminal spacing on MasterPact drawout chassis, and the downside position routes cables vertically out the back of the enclosure. This is the fixed-mount version of the rear connection — it bolts directly to the breaker, not a drawout cradle.
Standard lead times apply through the distribution channel. If you're filling a BOM line for a MasterPact install, this is a direct order-code item, no substitution worries.