Motor Starters

The Gresham Range of Motor Starters are 440V I/P and O/P.  They also have under-voltage and phase rotation protection and incorporate trip functions derived from the motor.

Each motor starter includes:

• Lockable isolator switch
• Contactor for motor control
• A suitably sized, control transformer with primary fuses and secondary fuses
• Either two stage overload protection (alarm and trip) using two sets of thermistors (3 thermistors per set) or thermal overload relay protection
• Under-voltage and single phasing protection
• Reset pushbutton
• Selector switch: Off/Local/Remote
• Start pushbutton
• Stop pushbutton
• Running indication LED (Green)
• Alarm indication LED (Yellow)
• Tripped indication LED (Red)
• Supply available LED (White)

Remote Interphases included with each Gresham Motor Starter

• Three sets of terminals for remote stop signals operating in both local and remote modes.(non-momentary, normally closed, open to stop)
• Two sets of remote stop terminals only operating in remote mode (momentary, normally open, close to stop)
• Two sets of remote start contacts only operating in remote mode. (momentary, normally open, closed to stop)
• One set of terminals for three wire remote start/stop signals only operating in remote mode. (momentary, normally open, close to start/stop).
• 1 set of volt free contacts to indicate motor running
• One set of volt free contacts to indicate motor tripped
• 1 set of volt free contacts to indicate starter in remote mode
• One set of volt free contacts to indicate starter in alarm (thermistor 130deg C)

Optional features for the Gresham motor starters:

• Overload relay, additional trip and alarm inputs, aspirator control, reversing, hour run meter.
• Ingress Protection IP44
• Ambient Temperature.
• 0°C to + 60°C. Relative Humidity 10% to 95% non-condensing.

For more information, contact us.