Download document () of 20
Clear selection
Download selection
United States Select your location
Submit form in new Tab
We make what matters work*
Submit form in new Tab
Digital
Services
Markets
170961867
Industry-first collaboration
Learn how we’ve joined forces with Siemens Energy to fast-track data center construction and reduce deployment timelines by up to two years.
Support
1010067800
Part number search >
Search for catalog numbers
Company
Eaton Experience Center Shanghai, China
Explore our Global Experience Locations
MyEaton

Favorites

Manage favorites

Circuit breakers

MDBS-4Ph Series

Ideal for a wide range of AC or AC-DC applications, such as generator sets, rail, and marine applications, the MDBS-4Ph Series makes AC power distribution more compact, flexible, and easy to install - saving valuable space while reducing labor and material costs. Power is supplied to circuit breakers by using Eaton's innovative bus system rather than by individual wiring or complicated buswork.

Contact sales

Core features

  • Pre-engineered compact power distribution bus system design saves installation time.
  • The number, type (ac vs dc), and location of loads can be easily changed by adjusting the busbar components, allowing users to achieve maximum flexibility and a compact design with minimum engineering and labor time.
  • Pluggable breakers for allow for quick connection and ability to disconnect.
  • Products are built to order according to specifications and can be provided with any number of positions to accommodate any application needs.
  • The power terminal can be attached at any location on the bus system allowing for more even power distribution and greater safety.
  • The use of optimized terminal connection blocks internal to the module drastically reduces the amount of physical space needed.
  • Mounting brackets on the top and bottom allow for front or rear mounting.
Specifications

Available options

  • 3-Phase AC system or AC/DC system
  • Several mounting configurations
  • Front or rear connections
  • Auxiliary alarm switch
  • Customize your load requirements
Download Links

Manufactured in Canada:
GH Series
GJ Series
GJ1P Series
C Series

Manufactured in Morocco:
JS Series
ALR Series (AMR with illuminated handle)
ADR Series (DIN Rail Mount 17.5mm)
ADS Series (DIN Rail Mount 19.02mm)
1U Slim Line Series
KD Series
RBR Series (Remote Breaker Reset)
MDBS (Modular Bas Bar system)
CPS (Customized Power Solutions)

Manufactured in Canada and Morocco:
AMR Series
AM1P Series

Eaton is an intelligent power management company dedicated to improving the quality of life and protecting the environment for people everywhere. We are guided by our commitment to do business right, to operate sustainably and to help our customers manage power ─ today and well into the future. By capitalizing on the global growth trends of electrification and digitalization, we’re accelerating the planet’s transition to renewable energy and helping to solve the world’s most urgent power management challenges.
Company
Quick links
© 2026 Eaton. All Rights Reserved.