Product Details

• The VBA Series offers protection to single phase equipment that is required to operate between two voltage limits
• Supply voltage is monitored for a preselected UNDER and OVER voltage limit
• With normal operating voltage applied the internal relay will energize (PICK UP)
• When the voltage falls outside the preset over or under trip points for longer than the release delay the relay will de-energize (DROP-OUT)
• When line conditions return to normal the VBA series automatically resets and the internal relay energizes
• The HYSTERESIS in each unit on the Under and Over limits provides a differential between the PICK-UP and DROP-OUT trip points