• Applications
  • Features
For thermal overload relays, magnetic motor starters and motor controls
Melting Alloy Thermal Units
One-piece thermal unit construction
Provides overload protection for most motors
Calibration is set for a range of motor full load currents
Repeated tripping does not affect the original calibration
Cannot be reset until cooled
Melting alloy thermal units are available in three designs: standard trip (Class 20) slow trip (Class 30) quick trip (Class 10)
NEMA OVERLOAD RELAYS