Description Magnecraft Time Delay and Sensor Relays 831 Series SPDT, 15 A Description 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. Feature Benefit 831 Relay 3-state indication LEDs Indicates normal state and 2 types of faulted states Timing dial Adjustable delay 0-10 sec DIN mountable Mounts directly on 35 mm DIN rail Current rating is 15A 240 Vac, 24 Vdc High switching capacity Only 17.5 mm (0.69 in) wide Ideal for tight spaces Nominal Sensing Contact Standard Timing Range Rated Current (A) Input Voltage Voltage Range Configuration Part Number Upper: 85 to 150 Vac 120 Vac 0 sec - 10 sec SPDT 15 831VS-120A Lower: 30 to 99% of upper Upper: 160 to 276 Vac 240 Vac 0 sec - 10 sec SPDT 15 831VS-240A Lower: 30 to 99% of upper Upper: 18 to 30 V 24 Vdc 0 sec - 10 sec SPDT 15 831VS-24D Lower: 30 to 99% of upper Part Number Explanation Series: 831 = SPDT Nominal Input Voltage: 120A = 120 Vac Relay Style: 240A = 240 Vac VS = Voltage Sensor 24D = 24 Vdc 7 Specications Magnecraft Time Delay and Sensor Relays 831 Series SPDT, 15 A Specifications Part Number 831VS-120A 831VS-240A 831VS-24D Input Characteristics Nominal Input Voltage 120 Vac 240 Vac 24 Vdc Absolute Input Voltage Maximum 200 Vac 280 Vac 35 Vdc Upper Supply Voltage Range 85 to 150 Vac 160 to 276 Vac 18 to 30 Vdc Lower Supply Voltage Range 30 to 99% of upper preset 30 to 99% of upper preset 30 to 99% of upper preset Maximum Power Consumption 1.2 VA 1.2 VA 1.2 W Time Delay adjustable 0 to 10 sec adjustable 0 to 10 sec adjustable 0 to 10 sec Accuracy Mechanical Setting 5% 5% 5% Repeat Accuracy <1% <1% <1% Temperature Variation <1% / C <1% / C <1% / C Hysteresis (from fault to normal) 2 to 6% of adjusted value 2 to 6% of adjusted value 2 to 6% of adjusted value Output Characteristics Contact Configuration 1C / SPDT 1C / SPDT 1C / SPDT Output Current Rating 15 A 120, 240 Vac, 24 Vdc 15 A 120, 240 Vac, 24 Vdc 15 A 120, 240 Vac, 24 Vdc Breaking Capacity 4000 VA/AC1, 384 W/DC 4000 VA/AC1, 384 W/DC 4000 VA/AC1, 384 W/DC Inrush Current 30 A / <3 sec 30 A / <3 sec 30 A / <3 sec Maximum Switching Voltage 250 Vac / 24 Vdc 250 Vac / 24 Vdc 250 Vac / 24 Vdc Minimum Breaking Capacity DC 500 mW 500 mW 500 mW Mechanical Life 3.00E+07 3.00E+07 3.00E+07 Electrical Life 7.00E+04 7.00E+04 7.00E+04 Contact Material Silver Alloy Silver Alloy Silver Alloy Switching Capability 15 A 240 Vac, 50/60 Hz, 24 Vdc 15 A 240 Vac, 50/60 Hz, 24 Vdc 15 A 240 Vac, 50/60 Hz, 24 Vdc 1/2 HP 120 Vac 1/2 HP 120 Vac 1/2 HP 120 Vac 1 HP 240 Vac 1 HP 240 Vac 1 HP 240 Vac Pilot Duty B300 Pilot Duty B300 Pilot Duty B300 Minimum Switching Requirement 100 mA at 5 Vac or Vdc 100 mA at 5 Vac or Vdc 100 mA at 5 Vac or Vdc Timing/Sensing Characteristics Time Scales 1 1 1 Time Ranges 0 sec to 10 sec 0 sec to 10 sec 0 sec to 10 sec Tolerance 5% of Mechanical setting 5% of Mechanical setting 5% of Mechanical setting Repeatability constant voltage and temperature 1% 1% 1% Upper Sensing Voltage Range 85 to 150 Vac 160 to 276 Vac 18 to 30 Vdc Lower Sensing Voltage Range 30 to 99% of upper preset 30 to 99% of upper preset 30 to 99% of upper preset General Characteristics Dielectric Strength (Input to Contacts) 2.5 kV (I/O) 2.5 kV (I/O) 2.5 kV (I/O) Dielectric Strength (Between Open Contacts) 1600 Vac 1600 Vac 1600 Vac Mounting Position Any, 35 mm DIN rail EN 50022 Any, 35 mm DIN rail EN 50022 Any, 35 mm DIN rail EN 50022 Overvoltage Category III III III Pollution Degree 2 2 2 Storage Temperature Range -30C (-22F) to +70C (+158F) -30C (-22F) to +70C (+158F) -30C (-22F) to +55C (+131F) Operating Temperature Range -20C (-4F) to +55C (+131F) -20C (-4F) to +55C (+131F) -20C (-4F) to +55C (+131F) Terminal Wire Capacity (Input and Output) 14 AWG (2.5 mm) maximum 14 AWG (2.5 mm) maximum 14 AWG (2.5 mm) maximum Terminal Screw Torque 7.1 Lb-in (0.8 Nm) maximum 7.1 Lb-in (0.8 Nm) maximum 7.1 Lb-in (0.8 Nm) maximum Weight 62 g (2.19 oz) 62 g (2.19 oz) 88 g (3.10 oz) Input Indication Green LED Green LED Green LED Output Indication (Blinks = Timing or On = Energized) Red LED Red LED Red LED Enclosure Rating (according to IEC 60529 IP rating) IP40 IP40 IP40 Approvals UL (E234203), CE (IEC 60947-1, UL (E234203), CE (IEC 60947-1, UL (E234203), CE (IEC 60947-1, 61000-4), RoHS 61000-4), RoHS 61000-4), RoHS (1) Actual product life will vary based on electrical load, duty cycle, application, and environmental conditions. 8