TPR

בקר טרמיסטור להגנת תרמית למנועים

TPR thermistor motor protection relay assembled in the winding stator, monitor the winding temperature of motors which have
PTC temperature sensors installed, in order to protect motors/alternators/transformers etc. from getting burned. The relay
de-energizes and alarm red light is on when the TPR detects either: short circuit (thermistor resistance below 10 ohm) or over
heating (resistance increased above 3100 ohm) .Relay energizes when the thermistor resistance drops below 1650 ohm.
Latching is enabling when terminals (Y1) and (Y2) are shortened. External switch (S2) must be added to allow latch reset.

Technical data