Specifications
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Incoming Power
CENTERLINE 2100 Motor Control Centers are designed for use on three-phase, three-wire or four-wire, Wye connected
power systems, rated 600V or less, 50 or 60 Hz, with a solidly grounded neutral. CENTERLINE 2100 Motor Control Centers
are also suitable for the following power system configurations, however, some units and options may not be available:
• 3-phase, 3-wire, Wye systems rated 600V/347V or less, with impedance grounded neutral
• 3-phase, 3-wire, ungrounded Delta systems, rated 600V or less
Power Bus and Ground Bus
The CENTERLINE 2100 MCC features the
time-proven Allen-Bradley CENTERLINE power bus
system. The horizontal power bus is mounted near
the vertical center of the structure providing
optimum heat dissipation, power distribution and
ease of maintenance and installation.
The vertical power bus allows power distribution
both above and below the center-mounted
horizontal bus, effectively doubling the capacity in
each section. This feature also helps allow a
virtually unrestricted unit arrangement.
Horizontal and vertical power buses are fastened
together with a two bolt assembly. This two-bolt
connection helps minimize the likelihood of ‘hot
spots’. The factory-made horizontal to vertical
power bus connection is tightened by a
computerized torquing system.
The power bus system is supported, braced and
isolated by a bus support molded of high
strength, non-tracking glass polyester material.
Horizontal Power Bus
The horizontal power bus is available as follows:
• 600…800 A - aluminum with tin plating
• 600…3000 A - copper with tin plating or copper with silver plating
The horizontal power bus is continuous in each shipping block and mounted near the vertical center of the structure
providing optimum heat distribution, power distribution and ease of maintenance and splicing. The horizontal power bus
is mounted on-edge in a vertical plane providing maximum strength to withstand magnetic forces present during fault
conditions. It is mounted in recessed channels of the bus support to protect against accumulation of dust and tracking
between phases.
Horizontal Power Bus
Two-bolt Assembly
Vertical Power Bus