Specifications A3-07
FUNCTION
This unit is designed to monitor the
sinusoidal alternating current in a
three-phase line; (form factor 1,11)
direct insertion up to 5A; by means of
three external CTs for higher values.
Both set points have the same current
range.
USE
With two MAX set points, the device is
used to monitor a three-phase load
(typically a motor) for performing a first
and second alarm or for double polarity
motors etc. With SP2 set as “min”, the
device performs a ”window” control
such as for fans, pumps etc., where it
is required to have both overload and
underload protection.
Features A3-07
AMPEROMETRIC INPUTS
I1: 14-16
I2: 18-20 (built-in CT)
I3: 22-24
Nominal current value 5A
permanent overload 200%.
For external CT see fig. 4 and TAB. A.
OUTPUT
2 changeover contacts
5A(NO) 3A(NC) - 230 Vac resistive
load.
R1
6-7 NO
Device not
supplied or in
alarm
6-5 NC
R2 9-10 NO
9-8 NC
SUPPLY
2VA 50-60 Hz Tolerance: ±10%
Pin 12-13 24Vac, 115 Vac, 230Vac or
24 Vdc (no polarity).
CASE: For DIN rail
70x75x110 mm
E 405B: transparent front cover for
tight closure (on request)
WORKING TEMPERATURE: 0÷70°C
WEIGHT: kg 0,500
COLOUR: grey similar to RAL 35
