Schneider Electric RM10TA00N Harmony 208-480V AC Phase Sequence Failure Asymmetry 1 CO 3-Phase Control Relay

The Schneider Electric RM10TA00N is a Harmony 3-phase control relay that monitors a 208-480 V AC supply for phase loss, incorrect phase sequence and phase asymmetry, standard version. It switches one 5 A changeover contact and de-energises the output the moment the monitored 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

RM10TA00N is the standard version of the RM10T family, covering phase loss, phase sequence and asymmetry only; where over/undervoltage detection is also needed on the same 208-480 V AC range, the RM10TE00N enhanced version is the sibling to specify, and where only phase loss and sequence matter without asymmetry, the RM10TG00N basic version is sufficient at a simpler feature set. The 1.5 s reset delay and <550 ms response time suit protecting three-phase motor starters from reversed-rotation or single-phasing faults before the motor is damaged.