Main lug load centers can be used as a home's main panel or sub panel depending upon your preferences. All ABB load centers are rated up to 60 degree/75 degree centrigrade and is suitable for use with service entrance equipment when installed in accordance with electrical code. The TPL412R is made of thermoplastic and features spaces for 4, 1" breakers, a 125A main ampere rating, and an outdoor suitable enclosure.