Three-Breaker Maintenance Bypass Switch; 208VAC, 125 A, 22kAIC; Wallmount; includes Bypass Input Breaker, Maintenance Isolation Breaker, and Maintenance Bypass Breaker, kirk-key locks, lockable front panel. 30"W x 36"H x 10"D; 110 lbs. For Use with E91 30kVA and all M90 Family 30kVA UPS - 90880-C208322ECA125A12502MB