Eaton 1MTBE400R Main Terminal Box - EUSERC Approved
Part Number: 1MTBE400R
Quick Summary
Eaton main terminal box 1MTBE400R provides high‑current terminations for underground three‑wire, single‑phase service. Some layouts force extra pull boxes, driving up cost and footprint; this enclosure consolidates solution space without compromising access. UL Listed, EUSERC Approved, and a NEMA 3R enclosure ensure robust performance in harsh outdoor and underground environments. By combining metering readiness with a compact footprint, this box delivers faster installations, improved reliability, and lower total installed cost for utility and commercial projects.
Product Information
Extended Description
1MTBE400R Eaton: Eaton main terminal box, Utility pull box, 400A, Aluminum, NEMA 3R, Underground, Three-wire, Single-phase, Compression Lugs, 120/240V
Product Name
Eaton main terminal box
Catalog Number
1MTBE400R
UPC
782113965413
Product Length/Depth
25.875 in
Product Height
61 in
Product Width
11.875 in
Product Weight
113 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Compliances
EUSERC Approved
Certifications
UL Listed
Catalog Notes
Meets EUSERC electrical requirements and eliminates the need to add additional pull box section.
Type
EUSERC
Amperage Rating
400A
Bus material
Aluminum
Feed type
Top/bottom
Phase
Single-phase
Voltage rating
120/240 V
Wire size
Crimp lug landing pads (no lugs included)
Utility approvals
ID : Idaho Power OR : Idaho Power WA : Seattle City Light AK : Anchorage Municipal Light & Power NV : NV Energy CA : City of Los Angeles - DWP (LADWP) AZ : Southern California Edison CA : Southern California Edison CA : Pacific Gas and Electric (PG&E) CA : Sacramento Municipal Utility District (SMUD) WI : WE Energies / Wisconsin Public Service (WPS) HI : Hawaiian Electric WA : Puget Sound Energy WA : Tacoma Public Utilities
Enclosure
NEMA 3R
Number of wires
3
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 1MTBE400R
Feature: 400A aluminum bus enables robust, low‑resistance power distribution for single‑phase 120/240V circuits. Business impact: reduces voltage drop and heat buildup, improving longevity and efficiency in service equipment. Application: ideal for underground service enclosures and metering applications. Feature: NEMA 3R enclosure adds weather resistance for outdoor and underground installations. Business impact: minimizes corrosion risk and downtime, supporting longer asset life. Application: suitable for exterior service entrances in varied climates. Feature: Top/bottom feed with three wires supports flexible wiring and straightforward field termination. Business impact: lowers installation time and wiring errors. Application: streamlined integration in utility pull boxes and main service boxes. Feature: Compression lugs with crimp lug landing pads (lugs not included) enable secure terminations. Business impact: enhances safety and code compliance while allowing customer‑specific lug selection. Application: heavy current distribution and underground feeders. Feature: EUSERC approved and UL Listed provide regulatory alignment and utility acceptance. Business impact: simplifies project approvals and reduces risk of noncompliance. Application: metering and utility‑fed installations across multiple jurisdictions. Feature: Warranty and policy support (1 year from installation or 18 months from shipment) reduces lifecycle risk. Business impact: lowers maintenance surprises and supports asset management planning. Application: long‑term reliability for critical service enclosures.
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FAQs
Plan for a top or bottom feed configuration and ensure alignment with 120/240V single-phase circuits. The enclosure accommodates 400A with aluminum bus and crimp lug landing pads (lugs not included). Factor in underground routing, EUSERC compliance, and the weight of 113 lb when selecting supports and lifting points.
The 1MTBE400R is rated for 400A with a 120/240V single-phase supply. It uses an aluminum bus and supports three wires with top/bottom feed. Enclosure is NEMA 3R and UL Listed, designed for underground and outdoor exposure while maintaining reliability under demanding service conditions.
Best suited for underground utility metering and service enclosures where a pull box is traditionally required. It eliminates the need for an additional pull box section per EUSERC requirements, consolidates wiring access, and supports metering products in commercial and light industrial installations with robust weather resistance.
The 1MTBE400R is UL Listed and EUSERC Approved, housed in a NEMA 3R enclosure. These certifications confirm electrical safety, utility acceptance, and suitability for outdoor or underground environments, facilitating project approvals and compliance with utility specifications across multiple jurisdictions.
The enclosure provides a long‑term, rugged solution with a one‑year warranty (or eighteen months from shipment) per Eaton policy, reducing maintenance risk. Its consolidation of pull box functionality lowers footprint and labor costs, while UL/EUSERC compliance minimizes inspection delays, delivering faster project completion and lower total cost of ownership for underground service installations.