Ensure reliable power distribution with the Eaton | Cutler Hammer 1MTB1200R Terminal Box. Designed for 1200 Amp service, this main terminal box is suitable for both aerial and underground applications. Its NEMA 3R enclosure provides protection for your electrical system, making it a robust choice for meter centers. This aftermarket replacement part is engineered for drawout connections, offering versatility in your setup..The Eaton | Cutler Hammer 1MTB1200R is a 1200 Amp main terminal box designed for single-phase, three-wire systems operating at 120/240V. It features an aluminum bus material and a NEMA 3R enclosure suitable for top or bottom feed types. The box accommodates wire sizes of (4) 250-500 kcmil and has a UL listing. Its dimensions are 11.19 inches in depth, 47.7 inches in height, and 20.17 inches in width, with a weight of 150 lb.Check for a Sub-component: If you are looking for a switch or breaker *inside* that terminal box, please provide the model number of that specific component. | Classification: Circuit Breaker meter center | Feed type: Top/bottom | Group: Meter Center | Listed: 1/29/2026 | Outdoor Rated?: Outdoor Rated (NEMA 3R or 4X) | Phase/Wire: 1-Phase, 3-Wire | Technical Requirements: If you are looking for a replacement or an equivalent, please confirm the following so I can search for a compatible alternative: