1MTB800R - Eaton Main Terminal Box

The Eaton Main Terminal Box serves as a reliable utility pull box for underground electrical service applications. Rated at 800A, this terminal box is built with a durable aluminum construction and designed for outdoor use with a NEMA 3R enclosure. Supporting a three-wire, single-phase 120/240V system, it accommodates up to four 250–500 kcmil conductors, offering ample capacity for heavy-duty residential or light commercial service entrances. Ideal for underground installations, this utility box ensures safe, organized, and efficient cable termination and distribution.

Key Features:

• Product Type: Main Terminal Box / Utility Pull Box
• Amperage Rating: 800A
• Voltage Rating: 120/240V
• Phase Configuration: Single-Phase, Three-Wire
• Conductor Capacity: (4) 250–500 Kcmil
• Material: Aluminum for strength and corrosion resistance
• NEMA Rating: NEMA 3R (Outdoor/Underground use)
• Application: Utility pull box for underground service installations

This Eaton Main Terminal Box is engineered for secure and efficient power distribution, providing a dependable solution for high-amperage underground utility connections.

Documents:

Catalogs
Residential and Light Commercial, Metering Products, Volume 1 Tab 4

Specifications and datasheets
Eaton Specification Sheet - 1MTB800R