Eaton Combines Drawout Molded-Case Circuit Breakers with Switchboards, Panelboards to Maximize Uptime in Critical Environments

Date: June 29, 2012

PITTSBURGH … Diversified industrial manufacturer Eaton Corporation today announced the introduction of a new circuit breaker maintenance solution that provides completely front-accessible and front-connected equipment with ease of maintenance, enhancing productivity and operational uptime while minimizing the total footprint of distribution equipment. The new    two- and three-pole molded-case circuit breakers (MCCBs) come in a mechanical drawout design in panelboards and switchboards.

The Eaton drawout MCCB switchboard and drawout MCCB panelboard may be substituted for nearly any traditional application, but have been specifically designed to meet the needs of mission critical industries that desire maximum uptime to protect critical loads, data integrity, and operational continuity.

“The new drawout MCCB compatible distribution equipment will give businesses confidence that their mission critical operations will experience lower downtime, decreased physical footprint and simplified maintenance,” said Clayton Tychkowsky, senior vice president and general manager, Commercial Distribution and Control Assemblies Division, Eaton Corporation.

On both units, drawout feeder MCCBs are available in two- and three-pole offerings from 20 Amps (A) to 600A. Breakers on the drawout MCCB units are inserted and removed via a mechanical removal system similar to other drawout designs associated with switchgear; however, these breakers are horizontally mounted in a traditional panelboard group mounted manner, providing greater density and reduced space.

The MCCBs are designed with a drawout cassette that has two distinct parts. The cassette “base” is specially designed so that the lineside connections to the panelboard or switchboard’s vertical bus and the loadside connection to the feeder conductors can be permanent. The “drawout” cassette allows the breaker and any breaker accessory connections to be removed.

The drawout cassette incorporates a viewing window allowing personnel to visually inspect the breaker status and includes a position indicator on the base cassette. An external racking port allows access to the racking mechanism to draw out the breaker, while handles attached to the deadfront help easily remove the breaker. A pigtail wiring harness, factory-wired from the breaker accessory ports, contains a pull-apart terminal block that attaches the permanently mounted female terminal block located on the base cassette.

To learn more about the new drawout MCCB products, please visit

Eaton’s electrical business is a global leader in power distribution, power quality, control and automation, power monitoring, and energy management products and services. Eaton is positioned through its global electrical product series to answer today’s most critical electrical power management challenges.

Eaton Corporation is a diversified power management company with more than 100 years of experience providing energy-efficient solutions that help our customers effectively manage electrical, hydraulic and mechanical power. With 2011 sales of $16.0 billion, Eaton is a global technology leader in electrical components, systems and services for power quality, distribution and control; hydraulics components, systems and services for industrial and mobile equipment; aerospace fuel, hydraulics and pneumatic systems for commercial and military use; and truck and automotive drivetrain and powertrain systems for performance, fuel economy and safety. Eaton has approximately 72,000 employees and sells products to customers in more than 150 countries. For more information, visit

Mark Horner
(412) 893-3590