The Macromatic VMP480A is a voltage monitor relay. This 8 Pin plug-in relay has a nominal voltage of 480V AC. It checks for over or under voltage errors and has an output of 10A SPDT. The VMP480A operates with an adjustable pick-up voltage, a fixed drop-out time delay and a fixed drop-out voltage. The LED indicator on the VMP480A is red to show when the relay is energized or green when it is not. It uses an 8 Pin 70169-D octal socket and features true RMS voltage measurement for more precise sensing.
Note: Image is for reference, actual part may differ
Specifications
- Relay Function- Over/Undervoltage
- Nominal Voltage- 480V AC
- Output- 10A SPDT
- Pick-up Voltage Range- 360-600V AC
- Drop-out Voltage Range- 270-570V AC (95% of Pick-Up)
- Setting Accuracy- Max Setting (Adjustable): +5%, -0%
Min Setting (Adjustable): +0%, -50%
Fixed Voltage Setting: +/- 2%
- Repeatability- <1%
- Load- 30VA
- Sensing Accuracy- Constant conditions within specifications: +/-2%
Variable conditions within specifications: +/- 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- Restart: 1 second, Pick-up: 0.5 seconds, Drop-out: 0.5 seconds
- Reset- Automatic
- Transient Protection- 2000V for IEC 61000-4-5 Level 3 (+/-2kV)
- Dimensions- 2.4" Height x 1.7" Width x 3" Depth
- Approvals- UL and CUL recognized, CE, UL & CUL listed (with Socket)
When the voltage stays above the preset pick-up voltage (360-600V AC) for a longer period than the pick-up time delay, then the unit is energized. If the voltage goes below the drop-out voltage (270-570V AC) for a longer duration than the drop-out time delay, then it de-energizes. The drop-out time delay is fixed at 0.5 seconds. Whether the VMP240A monitors for undervoltage or overvoltage situations depends on the type of output contacts being used.
Overvoltage
Overvoltage protection utilizes a normally closed contact. The voltage has to stay below the max setting for the load to be energized while the relay itself remains de-energized. If the voltage goes above this level, the load de-energizes and the relay energizes until voltage goes back down.
Undervoltage
Undervoltage monitoring requires a normally open contact. The load stays on and the relay is energized so long as the voltage stays above the minimum setting. Voltage going below the minimum de-energizes both the load and the relay.
Macromatic VMP Series Relay Installation Instructions
Under/Over 480V AC Voltage Monitor Relay VMP480A
