โอเวอร์โหลด TR0N/3 6-9A ฟูจิ FUJI • Highly reliable thermal overload relays
FUJI thermal overload relays are designed to provide overload protection
to meet the thermal characteristics of low voltage induction motors.
Adjustable thermal overload relays give motors positive overcurrent protection.
The starter contacts cannot be held closing under overload conditions.
However, once the bimetal element has cooled, the reset button can be
depressed and the motor can be restarted in the normal manner.
Ordinarily this reset is carried out manually but the starter can be
changed over to ‘automatic reset’ by means of a screw-driver.
• FUJI thermal overload relay is subjected to stringent testing in the
factory to check performance and actual values are calibrated with the
markings on the adjustable dial. Consequently, they provide a positive protection.
• Relays are also provided with ambient temperature compensators, so
that their performance will be maintained in spite of temperature
changes. The ambient temperature is regulated for 20°C.
• The heater elements are available for either 2- or 3-pole use