Schneider Electric RM10TE00N Harmony 208-480V AC Over/Undervoltage Phase Sequence 1 CO 3-Phase Control Relay

The Schneider Electric RM10TE00N is the enhanced Harmony 3-phase control relay that adds over and undervoltage detection to phase loss, sequence and asymmetry monitoring on a 208-480 V AC supply. It switches one 5 A changeover contact and de-energises the output the moment the supply goes out of tolerance, in a 17.5 mm DIN rail housing.

Technical Specifications

Certifications & Standards

• cULus
• CE
• UKCA
• CCC
• IEC 60255-1

Selection Notes

The 0-100 s adjustable time delay range on RM10TE00N is wider than the 0-15 s on the standard RM10TA00N, giving more headroom to ride through brief sag or swell events on top of the added over/undervoltage trip function - dedicated status LEDs for each fault type speed up diagnosis versus the single status LED on RM10TA00N. Choose this enhanced version where nuisance tripping from short dips must be distinguished from a genuine sustained over/undervoltage condition; where only phase sequence and loss protection is required, the simpler RM10TG00N is the lower-cost sibling. Reliability data rates the relay at an MTTFd of 158 years under continuous duty, a figure worth checking when specifying supply protection for unattended equipment where a relay failure itself becomes a nuisance-trip risk on top of the fault it is meant to catch.