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ZIEHL industrie-elektronik, 74523 Schwäbisch Hall, Germany, +49 791 504-0, info@ziehl.de, www.ziehl.de
AC-Electronic Current Transformer STWA1SH
2 A, with transistor-output
STWA1SH
Electronic Current Trans-
former with
fixed switching point
Dimension illustrations
The STWA1SH has an integrated
electronic with transistor-output.
The switching point is 2 A. Above
app. 2 A the output transistor is
switched on below app. 1.5 A it
is o.
The conductor is simply pushed
through the transformer.Multiple
loops reduce the switching point
corres pondingly, for instance to
0.5 A with four loops. A supply
voltage is not required.
Application: The STWA1SH is
used where current ow is to be
detected, with the exact value
of the current either known from
the power consumption of the
connected consumer or does not
matter for the evaluation.
For simultaneous evaluation of the current ow in several
conductors the STWA 1 S device can be connected in
series (AND circuit, pay attention to the voltage drop) or
in parallel (OR circuit, pay attention to the leak current).
isolated transistor-output max. DC 40 V/40 mA
output can be directly connected to the digital input
of a PLC
integrated diode for reverse voltage protection
electrical connection via screwless pluggable
terminals
no supply voltage required
DIN-rail-mount or with screws
plug-in current transformer (Ø 11 mm)
max. overload 100 A continously, 300 A / 10 s
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Switching point at Tu = 25°C
Hysteresis
Repeat accuracy
Temperature dependence
Overload cap. continous / 10s
Output voltage/current max.
Voltage drop (ON)
Leak current (OFF)
Switch-on /switch-o delay
Nominal frequency
operating range
error
Rated ambient temperature
range
Housing
Dimensions (h x w x d)
Diameter for conductor
Weight
AC 2 A +20/-40%
approx. 6%
± 5%
0...55°C: <0,5%/K (-20...0°C: <2,5%/K)
100 A / 300 A
DC 40 V / 40 mA
max. 3 V
max. 0,6 mA
app. 50 / 200 ms
50 Hz
30...70 Hz
≤ 1%/Hz
-20...+55 °C
Design H
50 x 36 x 56 mm
11 mm
app. 90 g
1 Housing
2 Clip for DIN-rail (removeable)
3 Terminal (pluggable)
4 Wall-mounting (M4)
2016-12-07
Electronic-Current-Transformer
Part number: S225550
