Type:45150
Current Relay Current Relay Current Relay
The unit is designed to monitor an AC or DC current taken by a load. When the supply is switched on
the green “supply on” LED will illuminate. As the current being monitored reaches the level set on the
front of the unit, the relay will change state after the set time delay. If the monitored current falls below
the set level minus the hysteresis, the relay changes state instantly. When Y1 and M are linked
together, the unit remains latched until the link or supply is removed. The unit incorporates an
adjustable on delay to ignore motor start up currents.
INSTALLATION AND SETTING
BEFORE INSTALLATION, ISOLATE THE SUPPLY.Connect the
supply as shown in the diagram below. Connect the monitored input
across ‘M’ and ‘Y2’, ‘Y3’ or ‘Y4’ depending on the required range in line
(series) with the load. Apply power and the green ‘supply on’ LED should
illuminate. If the current is below the set level, the relay will be deenergised (red ‘relay’ LED extinguished) if the switch is in the ‘N’ (normal)
position or energised (red LED illuminated) in the ‘I’ position. If this does
not occur check the wiring to the unit. Set the required ‘% level’, ‘%
hysteresis’, ‘fault delay’ and ‘on delay’ using the front mounted adjustments.
If the latching facility is required, connect a link or normally closed push
button across terminals ‘Y1’ and ‘M’
CONNECTION DIAGRAM
TECHNICAL SPECIFICATION
Supply Voltage Un: 24V, 110V, 230V AC 48 – 63Hz
(Galvanic isolation by transformer)
Supply Variation: 85 – 115% of Un
Isolation: Overvoltage cat. III (IEC 664)
Power
Consumption: 3VA maximum
Monitored Current: Y2: 5 – 100mA AC/DC (± 10%)
1.5A continuous O/L, 5A for 1 sec
Y3: 0.05 – 1A AC/DC (± 10%)
6A continuous O/L, 17A for 1 sec
Y4: 0.5 – 10A AC/DC (± 10%)
15A continuous O/L, 55A for 1 sec
Hysteresis: 5 to 50%
Time Delay (t): 0.1 to 3 seconds (± 20%)
(from fault)
On Delay (tON) 0.1 to 10 seconds (± 20%)
(@ power on)
Reset Time ≈ 200mS
Temperature
Range: -20 to +60°C
Relative Humidity: +95%
Contact Rating: SPDT
AC 1 250V AC 10A (2500VA)
AC 15 250V AC 6A
DC 1 25V DC 10A (250W)
Electrical Life: Minimum 150,000 ops at rated load
Housing: Orange flame retardant UL94 VO
Weight: 251g approx.
Mounting Option: Onto 35mm symmetric DIN rail
to BS5584:1978
(ENSO 002, DIN 46277-3)
Terminal
Conductor Size: Max 2 x 1.5mm2
stranded (terminated)
Max 2 x 2.5mm2 solid
Approvals: Conforms to: UL, CUL, CSA, IEC.
CE Compliant
MOUNTING DETAILS
78
74
99
Insert screwdriver
to release clip
TIMING DIAGRAM
% level
% hyst
NON-LATCHING MODE
N
I
% level
% hyst
N
I
LATCHING MODE – Y1 and M linked
latch removed
tON t t
45150-C990120
A1 15 Y2 Y3 Y4
16 18 Y1 M A2
45150
5 – 100mA AC/DC
0.05 – 1A AC/DC
0.5 – 10A AC/DC
-ve
Monitored
Current
Supply
Voltage
LATCH
(n/c contact)
Wiring to latch switch
across Y1 and M should
be short as possible
~
~
Ensure correct polarity
is observed when
monitoring DC currents
Note: Wiring to terminals
Y1,Y2, Y3, Y4and
M should be as heavy
as possible to prevent
any voltage drops
LOAD
+ve
Te
