Description
The Eaton 3MTB600R is a main terminal box designed to provide a secure connection point for incoming utility power in commercial and multi-unit electrical distribution systems. Eaton part number 3MTB600R supports up to 600 A service and accommodates three-phase 120/208 V electrical installations. Its weather-resistant construction and flexible feed configuration allow reliable integration into outdoor metering and service entrance assemblies.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Eaton |
| Category |
Power Distribution |
| Part Number |
3MTB600R |
| Subcategory |
Main Terminal Box |
| Product Type |
Main terminal box |
| Amperage Rating |
600 A |
| Voltage Rating |
120/208 V |
| Phase |
Three-phase |
| Feed Type |
Top or bottom feed |
| Bus Material |
Aluminum |
| Wire Size |
(2) 250–500 kcmil |
| Number of Wires |
4 |
| Enclosure Rating |
NEMA 3R |
| Utility Approvals |
Consumers Energy, Dominion, DTE Energy, WE Energies, Hawaiian Electric, NorthWestern Energy, PEPCO, Baltimore Gas & Electric |
| Compression Lug Kit |
3MTB600CLK (optional) |
| Certifications |
UL Listed |
| Product Dimensions (L × W × H) |
6.5 × 13.5 × 53.94 in |
| Warranty |
Eaton Selling Policy 25-000 |
| Weight |
47.5 lb |
Information About 3MTB600R
The 3MTB600R is a main terminal box manufactured by Eaton for use in metering and service entrance equipment in commercial and multi-residential electrical systems. Designed with an aluminum bus structure, the unit provides dependable current distribution for up to 600 A circuits in three-phase applications. It supports both top and bottom feed configurations and accommodates large conductor sizes for high-capacity service installations. The enclosure is rated NEMA 3R for outdoor use, offering protection against rain and environmental exposure while maintaining safe electrical connections.
Key Features:
- 600 Amp Service Capacity: Designed to support high-current electrical service connections in commercial and multi-unit installations.
- Three-Phase Power Support: Compatible with three-phase 120/208 V distribution systems commonly used in buildings and facilities.
- Aluminum Bus Construction: Provides durable current-carrying capability with efficient conductivity.
- Top or Bottom Feed Options: Flexible installation allows incoming service conductors from multiple directions.
- NEMA 3R Outdoor Enclosure: Weather-resistant design protects internal components from rain and environmental exposure.
- Large Conductor Compatibility: Supports conductor sizes from 250–500 kcmil for high-capacity service wiring.
- Utility Approved Design: Accepted by multiple North American utilities for service entrance installations.
- Compression Lug Kit Compatibility: Optional lug landing kit (3MTB600CLK) available for compression lug terminations.
The 3MTB600R delivers the reliability and precision required for secure power distribution connections in commercial and multi-tenant electrical service systems.
