OL · MOTOR PROTECTION
Match the overload relay to the motor and the contactor family.
The overload relay must contain the motor nameplate current in its adjustment range and must physically/electrically coordinate with the selected contactor.
Overload families
The 2026 manuals make the family relationships clear.
NR2 · 0.1–150 A
NR2 Thermal Overload Relay
Thermal overload family listed for NC1, NC2 and CJX2 contactors.
NC1 → NR2 verifiedOpen data →NR8 · 0.1–630 ANR8 Thermal Overload Relay
Higher-current thermal overload family intended for NC8 contactor coordination.
NC8 → NR8 verifiedOpen data →NRE8 · 0.6–100 ANRE8 Electronic Overload Relay
Electronic overload family with phase-loss protection and adjustable current range.
NC1 / NC8 compatibility notedOpen data →Protection rule
The relay dial is not a substitute for a coordination study.
Use the motor nameplate current as the starting point. Confirm service factor, ambient conditions, trip class, starting time and applicable protection rules before setting the relay.