The Macromatic VAKP048D is a voltage monitor relay. This 8 Pin plug-in relay has a nominal voltage of 48V DC. It monitors against over or under voltage errors and has an output of 10A DPDT. The VAKP048D features an adjustable pick-up voltage & drop-out voltage, with an adjustable drop-out 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. Note: Image is an approximation. Actual part may differ.

Specifications

Relay Function- Over/Undervoltage
Nominal Voltage- 48V DC
Output- 10A DPDT
Drop-out Time Delay- 0.1-10 sec
Pick-up Voltage Range- 36-60V DC
Drop-out Voltage Range- 27-57 DC (75-95% of Pick-Up)
Load- <2VA
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 (36-60V DC), 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. Whether the VAKP048D operates for undervoltage or overvoltage protection is subject to the kind of output contacts being used.

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

Macromatic VAKP048D 48V 8 Pin Voltage Monitor Relay

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Macromatic VAKP048D 48V DC Over/Undervoltage Monitor Relay

Macromatic VAKP048D 48V 8 Pin Voltage Monitor Relay