Master Switch Single Phase0 pages

DATACENTRE

E-MEDICAL

INDUSTRY

TRANSPORT

Master
Switch
STS Single-phase
1:1 32-63-120 A

Plug & Play
installation

HIGHLIGHTS

•t Operating flexibility
•t Load protection
•t Complete diagnostics
•t Hot Swap function

Master Switch Single-phase (MMS) is part of
the Master Switch range and offers solutions
suitable for protecting single-phase loads
with different power ratings. MMS is
available in three sizes - 32, 63 and 120 A
- and is therefore able to satisfy various
requirements for the protection of singlephase loads.

Flexibility of use
All MMS versions are designed with criteria
that facilitate on-site installation as well as
diagnostics, control and maintenance
operations. All models are equipped with a
manual bypass and the hot swap function
allows for rapid corrective interventions by
non-specialised personnel in the event of
faults.

Load protection
With MMS transfer switch loads are
protected against critical environmental
situations and mains power interference.
Microprocessor control and the use of
thyristor static switches ensure continuous
monitoring of the power supply sources and
reduced switching times between the two
sources in the event of a fault.

The constant monitoring of the output
current allows for the rapid identification of
any short circuit currents in the consumers,
preventing short circuits from propagating
to other loads.
MMS is equipped with thermal-magnetic
protection for the two sources, ensuring
rapid intervention in the event of faults and
integrated back feed protection.
MMS ensures switching times between the
two power sources of less that a quarter of a
cycle, both in the event of manual switching
and in the event automatic switching
triggered by a fault in the power source.

Complete diagnostics
All MMS versions are equipped with
32-character LCD displays and control
panels with multi-function keys. This allows
for rapid and intuitive monitoring of supply
readings, switch status and environmental
conditions. MMS is equipped with three
standard programmable dry contacts, an
input for emergency shutdown, a 232 serial
connection and a slot for housing the
expansion board, thus ensuring complete
availability of interface solutions for remote
control and monitoring.