Master Switch Three-Phase0 pages

DATACENTRE

E-MEDICAL

TRANSPORT

EMERGENCY

Master
Switch
STS Three-phase
3:3 100-600 A

Service
1st start

HIGHLIGHTS

•t High reliability
•t Hot Replacement
function
•t 3- or 4-pole version
•tAdvanced
communications

Installing a Master Switch static transfer
switch provides additional resilience and
protection from the disruption that can
be caused by the failure of a single power
source.
The result is the absolute protection of
industrial utilities and critical information
technology against power supply and load
faults.

Operating principle
Master Switch guarantees a source of
redundant power, allowing the load to
be switched between to alternative and
independent power sources.
Switching can be automatic (when a
supply source falls outside of acceptable

tolerances) or manually done by an operator
from the front panel or remotely.

Protection against power supply
faults
If one of the two power sources falls outside
tolerance levels, Master Switch will transfer
the consumers to the second power source
(switching is instantaneous if the two sources
are in phase).

Protection against environmental
disturbances
Overloads and load faults
In the event of an overload, the user can
decide the level of intervention of the
internal protection devices in order to block