The Macromatic VAKP120A is a voltage monitor relay. This 8 Pin plug-in relay has a nominal voltage of 120V. It monitors against over or under voltage errors and has an output of 10A DPDT. The VAKP120A features an adjustable pick-up voltage, drop-out voltage and an adjustable time delay ranging from 0.1-10 sec. It features an LED that is red when the unit is energized or green when it is not. It uses an 8 Pin 70169-D octal socket. Whether the relay operates for undervoltage or overvoltage protection is subject to the kind of output contacts being used. Note: 24V version shown.

Specifications

• Relay Function- Over/Undervoltage
• Nominal Voltage- 120V AC
• Output- 10A DPDT
• Drop-out Time Delay- 0.1-10 sec
• Pick-up Voltage Range- 90-150V AC
• Drop-out Voltage Range- 68-142V AC (75-95% of Pick-Up)
• Load- <2VA
• Setting Accuracy- Max Setting (adjustable): +5%, -0%
  Min Setting (adjustable): +0%, -50%
  Fixed Voltage Setting: +/- 2%
• Repeatability- <1%
• Sensing Accuracy- Constant conditions within specs: +/- 2%
  Variable conditions within specs: +/- 5%
• Operating Temperature- -28 C to 65 C (-18 F to 149 F)
• Storage Temperature- -40 C to 85 C (-40 F to 185 F)
• Voltage Tolerance- +/-50% of Nominal Voltage
• Output Contacts- 10A @ 240V AC, 7A @ 30V DC, 1/4HP @ 120/240V AC, C300
• Life- Mechanical: 10,000,000 Operations, Full Load: 100,000 Operations
• Response Time- Pick-up: 0.5 sec, Drop-out: 0.1-10 sec
• Reset- Automatic
• Transient Protection- 2000V for IEC 61000-4-5 Level 3 (+/-2kV)
• Dimensions- 2.4" Height x 1.7" Width x 3.5" Depth
• Approvals- UL and CUL recognized, CE, UL & CUL listed (with Socket)

When the voltage stays above the preset pick-up voltage (90-150V AC), then the unit is energized. If the voltage goes below the preset drop out for greater duration than the drop-out time delay, then it de-energizes.

Overvoltage
Overvoltage protection makes use of a normally closed contact. The voltage needs to stay below the preset pick-up voltage for the load to be energized while the relay itself remains de-energized. If the voltage goes above the pick-up, the reverse happens, until voltage goes below the preset drop-out.

Undervoltage
Undervoltage monitoring requires a normally open contact. The load stays on and the relay is energized if the voltage stays above the preset pick-up. Voltage going below the preset drop-out de-energizes both the load and the relay.

Macromatic VAKP Series Relay Installation Instructions

VAKP120A Over/Undervoltage Monitor Relay