Specifications

February 2007
16-22
For more information visit: www.eaton.com CA08101001E
Transfer Switches
16
Transfer Switch Equipment
Magnum Floor-Standing Transfer Switches
Power and Transformer Panels
Unmatched Performance
and Versatility
The Eaton family of Magnum transfer
switches offers unmatched performance,
versatility, and value for standby power
applications. At the heart of these
designs is the Magnum switch with
the following features:
Superior Main Contact Structure
All Eaton Magnum Transfer Switches
meet or exceed the standards set forth
in UL 1008 and UL 489 with high with-
stand, totally enclosed Magnum
switches. No other transfer switch
manufacturer has met the rigid testing
requirements of this combination of
standards. Completely enclosed con-
tacts add a measure of safety and reli-
ability. It also ensures the integrity of
the contact assemblies and minimizes
the need for periodic maintenance of
the contacts, reducing downtime and
maintenance time.
Fast, Powerful and Safe Switching
Mechanism
The mechanism utilizes a high speed
≤ than 3-cycle stored energy switching
mechanism. This mechanism can be
operated manually under a FULL LOAD.
Ease of Coordination and Application —
Short Time Withstand
The use of electronic trips has allowed
performance curve shaping to facili-
tate proper system coordination. The
most significant is the “short time”
rated trip unit.
These trip settings may be set for
what are considered extremely high
currents for much longer durations
than the 3-cycle withstand test required
under UL 1008. To facilitate improved
coordination, Eaton Magnum transfer
switches have been tested and are
provided with 30-cycle, extended
withstand ratings.
Magnum Switch Features
Magnum Insulated Case Switch
■ UL 489 and UL 1008 listed. 4000
and 5000 amperes available as
UL 891 only.
■ 65 – 100 kA standard withstand
ratings.
■ 30-cycle, extended withstand ratings.
■ ≤ than 3-cycle closing speed.
■ Electrically operated.
■ True 4-pole switched neutral
availability.
■ Totally enclosed contact assembly.
■ 3A/3B auxiliary contacts for customer
connection (each Magnum switch).
Optional Integral Overcurrent
Protection Capability
Optional Digitrip
TM
Magnum Trip Unit
Service Entrance
For service entrance and other applica-
tions, Digitrip solid-state trip units can
be integrated into the power switching
section. This eliminates the need for
separate upstream protective devices,
saving cost and space. Available with
various combinations of Long, Short
Time, Instantaneous, Ground Fault
Protection, and Communications.
Interlocking for Open Transition Applications
Mechanical Cable Interlock
The open transition type Magnum
Transfer Switches feature both
mechanical (cable) and electrical
interlocking to prevent paralleling of
sources.
Multi-Tap Voltage Selector
Voltage Selection Terminals
Allows the transfer switch to be readily
applied on most system voltages
worldwide by connecting to the proper
terminals. Available system voltages
include 120, 208, 220, 230, 240, 380,
401, 415, 480, or 600 Vac, 50 or 60 Hz.
Contact Wear Indicators
Contact Wear
Inspection Area
(Ledge Not Visible
Under Contacts)
Contact Wear
Indicator —
Contacts Closed
and in Good
Condition
Contact Wear
Inspection Area
(Ledge Now
Becoming Visible
Under Contacts)
Contact Wear
Indicator —
Contacts Closed
and Wear is
Indicated
Side-to-Side
Ledge