831 Voltage Sensing Relay/SPDT
15 Amp Rating
Input Indication
Green LED
Output Indication
Red LED
Umax
Time Setting
Supply
Terminals
WHITE
Umin
UL Listed
File No. E234203
WHITE
Output Terminals
DIN Mount
General Specifications (@ 25°C)
Output Characteristics
Number and type of Contacts
Contact Material
Current rating
Switching voltage
(UL 508)
Units
831VS-120A
SPDT
Silver Alloy
15
240 AC, 50/60 Hz
24 DC
1/2 @ 120VAC
1 @ 240 VAC
B300
100
Red
120 AC
200 AC
80….150 AC
30….99
1.2
Green
1
0….10
5
1
25
20
100,000
10,000,000
2500 AC
1000 AC
14 (2.1)
7.1 (0.8)
UL, CE
-30…+70
-20…+55
IP 20
71
831VS-240A
SPDT
Silver Alloy
15
240 AC, 50/60 Hz
24 DC
1/2 @ 120VAC
1 @ 240 VAC
B300
100
Red
240 AC
280 AC
160….276 AC
30….99
1.2
Green
1
0….10
5
1
25
20
100,000
10,000,000
2500 AC
1000 AC
14 (2.1)
7.1 (0.8)
UL, CE
-30…+70
-20…+55
IP 20
71
@ 240 VAC, 24 VDC
Minimum Switching Requirement
Indication
Input/Sensing Characteristics
Voltage Range
Absolute Input Voltage Maximum
Upper Sensing Voltage Range
Lower Sensing Voltage Range
Maximum consumption
Indication
Timing Characteristics
Time Scales
Time Ranges Available
Tolerance
Repeatability
Operate Time
Release Time
Performance Characteristics
Electrical Life
Mechanical Life
Dielectric strength
Terminal Wire Capacity
Terminal Torque (maximum)
Environment
Product certifications
Ambient air temperature
around the device
Degree of protection
Weight
LED
A
V
V
HP
HP
Pilot Duty
mA
Blinks = Timing
On = Energized
V
V
V
%
VA
SECTION 5
LED
AC/DC
Mechanical Setting
Constant Voltage and Temperature
Maximum
Maximum
Operations @ Rated Current (Resistive)
Unpowered
Input to Contacts
Between Open Contacts
sec
%
%
ms
ms
V
V
AWG (mm2)
in lb (Nm)
Standard version
Storage
Operation
°C
°C
grams
5/8
M a gn e c r af t S ol u t i on G u id e 1 0 5 A
agn
a ft
uid
05
www.magnecraft.com
847-441-2540
Optional Panel Adapter
(16-788C1)
See Section 3 p.18
The 831 voltage sensor is a single phase AC voltage sensing
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 energized (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 set the lower trip-point for the
voltage sensor. The timing dial is used to delay the transfer
of the contacts, from 0 to 10 seconds, when a set point has
been violated.
Standard Part Numbers
Part Number
831VS-120A
831VS-240A
Input Voltage
120 VAC
240 VAC
Timing Range
0s...10s
0s...10s
BOLD-FACED PART NUMBERS ARE NORMALLY STOCKED
Sensing Voltage Range
Contact Configuration
Rated Load Current
Upper: 80...150 VAC
SPDT
15 Amps
Lower: 30...99%
Upper: 160...276 VAC
SPDT
15 Amps
Lower: 30...99%
Part Number Builder
Series
831 = SPDT
Relay Style
VS = Voltage Sensor
–
Input Voltage
120A = 120 VAC
240A = 240 VAC
0.63
(16)
1.35
(34.2)
2.6 MAX
(65)
0.13
(3.4)
0.7
(17.6)
0.6
(14.2)
WIRING DIAGRAM
INPUT
VOLTAGE
3.5
(90)
2.7
(67.5)
0.2
(5)
1.8
(45.3)
1.4
(35)
Un
+
–
A1
0.3
(7.4)
A2
15
16
18
0.236
(6)
0.6
(16)
15 - COMMON
16 - NORMALLY CLOSED
18 - NORMALLY OPEN
Mag necraf t S o lu t i on Gu id e 10 5 A
5/9
SECTION 5
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