3RT, 3RH, 3TB, 3TC, 3TH, 3TK Contactors for Special Applications
3TC Contactors for Switching DC Voltage
1- and 2-pole, 32 ... 400 A
■
Overview
3TC4 and 3TC5
EN 60947-4-1 (VDE 0660 Part 102)
The contactors are finger-safe according to EN 50274.
Terminal covers may have to be fitted onto the connecting bars,
depending on the configuration with other devices.
The DC motor ratings given in the tables are applicable to the
DC-3 and DC-5 utilization categories with two-pole switching of
the load or with the two conducting paths of the contactor
connected in series.
One contactor conducting path can switch full power up to
220 V. The ratings for higher voltages are available on request.
3TC7
EN 60947-4-1 (VDE 0660 Part 102).
The contactors are suitable for use in any climate. They are
suitable for switching and controlling DC motors as well as all
other DC loads. The electromagnetic excitation is designed for
a particularly wide coil operating range.
It is between 0.7 or 0.8 to 1.2
U
s
.
3TC74 contactors can be used at up to 750V/400A and 50 Hz in
AC-1 operation.
■
Application
The contactors are suitable for switching and controlling DC
motors as well as all other DC circuits.
A version with an especially large operating range is available
for use in electrically driven vehicles and in switchgear with
significant fluctuations in the operating voltage (see page 3/74).
Siemens LV 1 · 2006
3/75
3
SIEMENS [ Siemens Semiconductor Group ]
