Brochure

GV2, GV3, and GV7 Manual Motor Starters, Controllers, and Protectors

Selection

6/2010

Magnetic Fault Indicators

The magnetic fault indicator does one of the following:

• differentiates a thermal fault from a magnetic fault

• opens the contactor only in the event of a thermal fault (see page 50)

Undervoltage Trip Units, GV7AU

The undervoltage trip opens the motor starter when the control voltage drops below the trip threshold

of 0.35–0.7 times the rated voltage. The starter contacts close again when the control voltage rises

above 0.85 times the rated voltage. The GV7AU undervoltage trip unit meets the requirements of

IEC 60947-2. For the location of the undervoltage trip unit, see Figure 5 on page 50.

Shunt Trip Units, GV7AS

The shunt trip opens the motor starter when the control voltage rises above 0.7 times the rated

voltage. For location of the shunt trip unit, see Figure 5 on page 50.

Trip Unit Operation, GV7AU or GV7AS

When the motor starter has been tripped by a GV7AU or AS trip unit, it must be reset either locally or

by remote control. For information on remote control, consult your local sales office.

Tripping has priority over manual closing. When a trip condition is present, manual action does not

close the contacts, even temporarily.

Table 62: Magnetic Fault Indicators

Voltage Catalog Number Weight, lb (kg)

24–48 Vac / 24–72 Vdc GV7AD111

0.22 (0.100)

110–240 Vac/Vdc GV7AD112

Table 63: Undervoltage Trip and Shunt Trip Devices

Type Voltage Catalog Number Weight, lb (kg)

Undervoltage trip

48 V, 50 Hz GV7AU055 0.23 (0.105)

110–130 V, 50/60 Hz GV7AU107

0.24 (0.110)

200–240 V, 50/60 Hz GV7AU207

380–440 V, 50/60 Hz GV7AU387 0.23 (0.105)

525 V, 50 Hz GV7AU525 0.22 (0.100)

Shunt trip

48 V, 50 Hz GV7AS055 0.23 (0.105)

110–130 V, 50/60 Hz GV7AS107

0.24 (0.110)

200–240 V, 50/60 Hz GV7AS207

380–440 V, 50/60 Hz GV7AS387 0.23 (0.105)

525 V, 50 Hz GV7AS525 0.22 (0.100)