Brochure/Catalogue
VARITECTOR SPC
Pluggable surge protection for the
measurement and control industry
VARITECTOR SPC
Weidmüller's VARITECTOR SPC
pluggable surge protection is
remarkable for its combination of
extremely high protective functionality
and compact dimensions. It is suited
for use in measurement and control
circuits. The size is made possible by
the seletion of INSTA dimensions, with
a width of 17.8 mm (1TE).
Two versions are available:
• VSPC: a surge protector
with no monitoring function
• VSPC R: a surge protector
with monitoring function
The base components are plugged in
to form a direct earthing contact via
the mounting rail. This saves you time
when making the connection. The
VARITECTOR SPC series is optimally
designed for compact installations
in process automation, industrial
automation and building automation.
The two-stage surge-protection base
components are equipped with gas
discharge tubes, suppressor diodes
(TVS) and decoupling components.
Individual protective components
(such as gas-lled spark gaps, varistors
and suppressor diodes) supplement
this product line. IEC 62305 requires
that a periodic inspection of surge
protection products be conducted.
The functionality of all VARITECTOR
SPC modules can be tested using
testing equipment (such as the V-TEST
Basic) that is available separately. The
VARITECTOR SPC R modules also
feature an internal monitoring function.
The green LED signals when the
protection function is ready.
The red LED signals an error.
VARITECTOR SPC
Up to ten modules can be wired
together in succession. The modules
alert an evaluative module (the
VSPC CONTROL UNIT) in the event
of an err
or. VARITECTOR SPC series
surge protection is available with rated
voltages of 5 V, 12 V, 24 V, 48 V and
60 V. The product's voltage level is
colour-coded on the pluggable arrester.
An earthing contact is established by
snapping onto an earthed TS 35 rail.
The TS 35 must be earthed in order to
ensure safe power discharging via the
terminals of up to 20 kA (8/20 μs) and
2.5 kA (10/350 μs). The rail must be
screwed onto the earthed mounting
plate for reasons of EMC. In order to
optimise the protective function, a
PE-contact connection should be made
over the VSPC module every 60 cm for
equipotential bonding. The pluggable
protective element can be pulled out
during operations without interrupting
the measurement circuit. A testing
instrument, available as a Weidmüller
accessory, allows you to test the
protective element in compliance with
the IEC 62305-3 directive.
The accessory also includes a simple
mec
hanism for applying the wire shield.
Overview of model types
A VARITECTOR SPC (VSPC) consists
of a pluggable component and a
separate base component
(VSPC BASE).
Explanation of terms:
CL = current loop / analogue signals
SL = symmetric loop - for binary signals
VSPC 2CL
VSPC 2CL (CL = current loop) is a
two-stage protective combination with
a gas discharge tube and a suppressor
diode located between the current
paths. This VSPC 2CL limits the surge
voltage within two analogue signal
circuits (such as for current loops).
This pluggable component can be
inserted into the base (VSPC BASE
2CL). The base (VSPC BASE FG 2CL) is
used when working with signal circuits
which are not earthed. The VSPC 2CL
HF is used in order to avoid inuencing
high-frequency signal circuits (this
also includes the VSPC RS485 and
the VSPC UK0). This protective
combination is also inserted into the
base mentioned above.
Monitoring function
The VSPC 2CL R products feature
monitor and alert functions. As well
as the alert function, there are two
channels available for current loops in a
single housing. The special VSPC BASE
2CL R and SPC BASE 2CL FG R bases
B
B.10 2028840000
Lightning and surge protection
for control and instrumentation signals