IDMT Overcurrent Relays ITG7xx5/xx6 series
Overcurrent relays providing phase and/or earth-fault protection. Slightly inverse, inverse, very inverse and extremely inverse time types, with or without instantaneous high-set units. They can be installed in all types of climatic conditions. Various pickup levels and time settings are available.

ANSI codes:  51 or 51N and/or 50/50N

Overcurrent relays with instantaneous or definite time characteristics are covered in the ITG7000 series brochure.

See the homepage for Static relays for the full brochure.  These relays have their own brochure "ITG7xx5/xx6".