6 / 12
6
Safety is enhanced by the through-
the-door design that provides for three
breaker positions with the door
closed: connect, test, and disconnect.
■
Connect
■
Test
■
Disconnect
Viewable through-the-window
electrical accessories are
identically sized, yet keyed for
error-free mounting.
The auxiliary switch is an internal
accessory that provides remote
electrical indication of the breaker
status.
An electric motor automatically
charges the closing springs. In
absence of control power, the
springs can be manually charged.
Magnum modular
design allows customers
to mount accessories in
the field.
A common family of accessories for all frame sizes
We designed Magnum accessories to fit all frame sizes,
thus reducing inventory parts and the possible confusion
that can exist when various accessory sizes are required
for individual breaker frames.
Magnum through-the-window accessories are installed in
the right front of the breaker. The unique windows in the
breaker cover enable accessories to be quickly identified
by name and rating. Additional internal accessories
include an auxiliary switch, over-current trip switch
(
alarm), and electrical motor operator.
Accessories are plug-in units that snap in place, providing
for easy mounting and wiring to save both installation
time and cost. This feature facilitates accessory changes
by the installer or user personnel, eliminating the need
for manufacturer modification or outside service
companies.
Modular accessories are keyed for fast error-free
mounting in the field. For example, the spring release
unit can only be mounted in the centre cavity.
Convenient secondary contact placement facilitates
wiring and maintenance
Secondary wiring points are located in the top front
portion of each cell. A separate door can be used to
cover the contacts so an operator can safely access
them without opening the breaker compartment door.
Customer contact points are dedicated to the customer’s
interface, totally free and isolated from factory
connections.
The secondary terminals have standard finger-proof
hinged covers, providing safety by protecting against
accidental contact with live secondary contacts.
Covers are hinged for making connections and include a
small access hole for circuit testing using a probe. Each
secondary contact point is dedicated to a specific
function, allowing standardised wiring diagrams and true
electrical interchangeability of common size breakers.
Standard wiring points help improve quality while
reducing maintenance and inspection time for end
customers.