Square D 200A 25K Main Breaker 42 Space Plug-in Branch 3PH 4W Load Center (Less Cover). Use Only Authentic 10K or 22K Branch Breakers Sold Separately. For Surface Mt Cover Use QOC342MQS, for Flush Mt Cover Use QOC342MQF. If Grounding Bar is Required, Order PK23GTA. Load centers and covers are NEW SURPLUS stock and are CLEARANCE PRICED. Subject to on hand quantities only.