The 831 voltage sensor is a single-phase ac voltage device that is capable of monitoring and reacting to over and under voltage conditions. This product is designed to be wired across terminals A1 and A2 with the voltage that is being monitored. The two LED lamps indicate both when the input voltage is present (green LED) and also when the output is energised (red LED). The Umax dial is used to set the upper trip-point for the voltage sensor. The Umin dial is a percentage of the Umax dial and is used to delay the transfer of the contacts, from 0 to 10 seconds, when a set point has been violated.
3-state indication LEDs Timing dial DIN mountable 17.5 mm wide
Attribute
Value
Supply Voltage
200V ac
Mounting Type
DIN Rail
Time Range
0 → 10s
Number of Contacts
1
Number of Timer Functions
Single
Contact Configuration
SPDT
Time Increment
Seconds
Maximum Voltage
150V ac
Switch Configuration
SPDT
Terminal Type
Screw
Minimum Voltage
85V ac
Width
17.6mm
Power Supply
External
Length
90mm
Depth
65mm
Maximum Operating Temperature
+55°C
Time Delay
0 → 10s
Minimum Operating Temperature
-20°C
Contact Material
Silver Alloy
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