Square D Homeline 40-circuit main breaker load center value pack. Plug-on Neutral ready, features a plated aluminum bus,that is tested and listed only for Homeline circuit breakers. 100 amp main breaker included. Also includes (2) 20 amp single-pole (HOM120) circuit breakers, (1) 30 amp double-pole (HOM230) circuit breaker, and cover. UL (Underwriter's Laboratories) listed for residential and commercial power distribution. Engineered for fast installation and wire savings. WARNING: This product can expose you to chemicals including lead which is known to the State of California to cause cancer and which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov -