Eaton main terminal box 3MTB2000RCRIS - UL Listed
Part Number: 3MTB2000RCRIS
Quick Summary
Eaton main terminal box is a rugged 2000A riser enclosure designed to support large, multi-wire power distribution in industrial facilities. This solution addresses the common pain points of expanding feeders: tight spaces, complex routing, and environmental exposure. With UL Listed safety certification and a NEMA 3R enclosure, it is built to withstand outdoor and semi-outdoor installation while maintaining accessible terminations. The design supports four conductors in a three-phase, 120/208 V system and uses copper bus for low resistance and reliable fault performance. By combining robust construction with straightforward installation and serviceability, it helps reduce commissioning time, improve safety compliance, and lower total cost of ownership, especially in facilities planning aggressive capacity upgrades.
Product Information
Extended Description
3MTB2000RCRIS Eaton: Eaton main terminal box, Riser box, 2000A, Copper, NEMA 3R, Overhead/underground, Four-wire, Three-phase, 120/208V, #2 AWG-750 kcmil
Product Name
Eaton main terminal box
Catalog Number
3MTB2000RCRIS
UPC
786689014971
Product Length/Depth
17.39 in
Product Height
60.58 in
Product Width
32.88 in
Product Weight
250 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.
Certifications
UL Listed
Type
Riser box
Amperage Rating
2000A
Bus material
Copper
Feed type
Top/bottom
Phase
Three-phase
Voltage rating
120/208 V
Wire size
#2 AWG-750 kcmil
Enclosure
NEMA 3R
Number of wires
4
Feature: 2000 A amperage rating enables large feeders and scalable distribution. Business impact: supports critical loads and reduces the need for mid-project equipment swaps, improving uptime and capacity planning. Application: ideal for data centers, manufacturing lines, and processing plants with high power demands. Feature: copper bus material minimizes resistance and voltage drop. Business impact: improves fault current handling and efficiency, lowering energy losses and thermal stress. Application: long cable runs and high-current connections in three-phase 120/208 V systems. Feature: NEMA 3R enclosure provides weather resistance. Business impact: enables outdoor and semi-outdoor installations with compliant shielding against moisture and corrosion. Application: outdoor plant rooms and riser applications where reliability is essential. Feature: top/bottom feed and four-wire configuration. Business impact: simplifies wiring schemes and future expansions, reducing install time and error potential. Application: overhead and underground feeder layouts in industrial facilities. Feature: UL Listed certification. Business impact: eases regulatory approvals and supplier risk management, supporting compliance audits. Application: safety-critical electrical assemblies and code-compliant installations.
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FAQs
Plan for a four-wire, three-phase feeder with 120/208 V, top and bottom entry, and copper bus rated for 2000 A. The 250 lb unit requires secure mounting and adequate clearance for service access, wiring, and future expansion. Ensure a sturdy support surface to accommodate 17.39 in depth, 60.58 in height, and 32.88 in width, plus room for conduit routing and terminations.
A 2000 A rating enables assignment of large feeders or multiple distribution circuits. Design protections with appropriate upstream devices per NEC/NRTL guidelines to ensure coordination and minimize nuisance trips. The copper bus improves fault current capability and reduces voltage drop, supporting safer, faster fault clearance and easier selectivity during faults.
Yes. The 3MTB2000RCRIS is designed as a riser box with a NEMA 3R enclosure, suitable for outdoor and harsh environments. It supports overhead and underground installations with four-wire, three-phase copper bus conductors (#2 AWG to 750 kcmil) and top/bottom feed, enabling versatile, code-compliant power distribution in demanding facilities.
The product is UL Listed, which supports safety compliance for industrial enclosures and electrical assemblies. Verify installation per NEC/NFPA 70 and local codes, ensure proper grounding and labeling, and confirm the enclosure’s environmental suitability matches site conditions. Document the warranty terms and Kepp coverage aligned with Eaton’s policy during audits.
The rugged, UL-listed enclosure with copper bus minimizes resistance, improving efficiency and reducing heat-related losses. A 1-year warranty from installation or 18 months from shipment lowers risk during commissioning. The robust design reduces maintenance downtime and field rework, delivering faster expansions, easier servicing, and a favorable return on investment in capacity-upgrade projects.