Description

Eaton 1MTB800RC 800A Main Terminal Box – NEMA 3R Utility Pull Box

The Eaton 1MTB800RC Main Terminal Box is a heavy-duty 800A utility pull box designed for residential, commercial, and light commercial electrical service applications. Engineered for utility-approved installations, this robust enclosure provides a reliable connection point for high-capacity electrical distribution systems while offering superior durability and weather resistance for outdoor installations.

Designed for underground service entrances and utility metering applications, the 1MTB800RC features copper bus construction, a NEMA 3R enclosure, and support for large conductor sizes, making it an ideal solution for high-amperage single-phase electrical systems.

High-Capacity 800A Service Rating

• 800A continuous current rating
• Designed for large residential and commercial electrical services
• Supports high-load electrical distribution systems
• Utility-approved design for demanding applications

Utility Pull Box Design

The 1MTB800RC is engineered for utility service entrance installations requiring a secure and accessible connection point.

Benefits include:

• Simplified utility service connections
• Reliable conductor termination
• Suitable for underground service applications
• Supports utility metering infrastructure

Durable Copper Bus Construction

• Copper bus material for superior conductivity
• Reduced resistance and heat generation
• Long service life
• Reliable performance under heavy electrical loads

NEMA 3R Outdoor Enclosure

Built to withstand outdoor environmental conditions.

• NEMA 3R-rated enclosure
• Weather-resistant construction
• Suitable for outdoor utility installations
• Protection against rain and environmental exposure

Single-Phase 120/240V Configuration

• Single-phase operation
• 120/240V service rating
• Three-wire system configuration
• Designed for utility service entrance applications

Flexible Conductor Capacity

• Supports (4) 250–500 kcmil conductors
• Top and bottom feed capability
• Accommodates large service entrance conductors
• Suitable for high-capacity electrical installations

Commercial-Grade Construction

• Utility-approved design
• Heavy-duty steel enclosure
• Built for long-term reliability
• Suitable for demanding utility and commercial environments

Product Specifications

• Amperage Rating: 800A
• Voltage Rating: 120/240V
• Phase: Single-Phase
• Number of Wires: 3
• Bus Material: Copper
• Feed Type: Top/Bottom
• Wire Size: (4) 250–500 kcmil
• Enclosure Rating: NEMA 3R
• Product Weight: 145 lbs.

Dimensions

• Height: 47.7 in.
• Width: 20.17 in.
• Depth: 11.19 in.

Utility Approvals

Approved for use with select utility providers including:

• Dominion Energy
• NorthWestern Energy

Please verify current utility approval requirements prior to project installation.

Ideal Applications

• Utility service entrances
• Commercial electrical services
• Multifamily residential developments
• Industrial facilities
• Metering and distribution infrastructure
• Underground electrical service installations

SKU

1MTB800RC

Why Choose the Eaton 1MTB800RC?

The Eaton 1MTB800RC combines an 800A service rating, copper bus construction, NEMA 3R weather protection, and utility-approved performance into a dependable service entrance solution. Designed for demanding commercial and utility applications, it provides reliable electrical distribution and long-term durability in outdoor environments.

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