Type 49/50/51 overload relays

The Type 49/50/51 overload relay provides three important functions for the protection of a motor

The Type 49/50/51 overload relay provides three important functions for the protection of a motor: Overload Protection (Function 49), Locked Rotor Protection (Function 51) and Phase Fault Protection (Function 50). Packaged in one case, the three functions are individually adjustable, allowing optimum protection without compromising the various elements. 

Why ABB?

  • Long product life
  • Ease of application
  • Reliable protection
  • High-quality design

Are you looking for support or purchase information?

Loading documents

Related offering

Select region / language