Automation

Switchgear

Safety Technology

Commanding and Signalling

Control, Display and Operate

Timing relays

Safety relays

Measuring and monitoring relays

Current Monitor

Phase Sequence Relay

Phase Monitor

Unbalance Relay

Level Relay

Earth-leakage Monitor

Three-phase Monitor

Rotary switches, switch disconnectors

Small Enclosures CI-K

Easy control relays

easyControl compact control

easyHMI: MFD-Titan

easyHMI: MFD4

Switching and Protecting Motors

Switching and Protecting High Power

Darwin Technology

Insulated Distribution Boards

EMR4-F500-2 Phase Sequence Relay – Phase Sequence Monitoring with a Compact Device

The EMR4-F500-2 phase sequence relay with its compact 22.5 mm width is used for monitoring the clockwise rotation of movable motors for which the phase sequence is important, such as with pumps, saws, drilling machines. Benefits: Additional space in the control panel thanks to the narrow width Protection against damage by means of phase sequence monitoring

A clockwise phase sequence causes the changeover contact to enable the control voltage for the motor switchgear. The EMR4-F500-2 covers the entire voltage range from 200 V AC to 500 V AC.
Features

• Phase sequence detection
• Phase loss detection at U < 0.6 x Ue
• LED status indication
• The relay has its own power supply, i.e. an additional supply voltage is not required
• The relay features a second changeover contact that is used for indication purposes.