Protection Relays

Motor Management Relay includes arc-flash light sensor.
Protection Relays

Motor Management Relay includes arc-flash light sensor.

Using standard motor thermal management, overcurrent protection, and integrated arc-flash detection, Model SEL-849 protects equipment and personnel in low- and medium-voltage motor control centers. Unit features 4 contact outputs,Â- 6 opto-isolated control inputs, EIA-232/EIA-485 port, and Ethernet 10/100 BASE-T port. With 2.8 x 5 x 6 in. form factor andÂ- current input of 0.5–128 A,...

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Monitoring Relay enables flexible use.
Protection Relays

Monitoring Relay enables flexible use.

Sirius 3UG4 monitoring Relay can be flexibly adapted using wide range of parameter settings such as: phase sequence, asymmetry, undervoltage or overvoltage, delay times, and reset response. Unit has wide voltage range of 160-690 V. Unit is equipped with a display. Indication of actual value and type of fault facilitates installation and fault diagnostics. Together with contactor reversing...

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Protection Relay monitors 2-winding transformers.
Protection Relays

Protection Relay monitors 2-winding transformers.

SEL-387A monitors and protects transformers and other 2-port electrical apparatus. Protection includes differential and overcurrent protection for 3-phase current inputs, and optional Restricted Earth Fault function. Four serial communications ports enable remote metering and control of system functions and settings via PC. Sequential-events recorder logs all changes of state within relay logic...

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Circuit Monitor detects oscillatory and impulsive transients.
Protection Relays

Circuit Monitor detects oscillatory and impulsive transients.

POWERLOGICÂ-® Series 4000 permanently mounted circuit monitor with transient detection (CM4000T) automatically generates alarm so that action may be taken to correct problems before facility shuts down. It detects and captures oscillatory and impulsive transients (up to 10,000V peak, line-to-line) as short as 1 microsecond in duration. CM4000T maintains historical record of number of...

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Monitor/Relay includes universal input.
Protection Relays

Monitor/Relay includes universal input.

SLU Universal Phase Monitor/Relay protects against over/under voltage, phase loss, unbalance and phase sequence. Universal input allows for operation from 200 to 500 V, three phase. Unit is equipped with adjustable restart delay and adjustable fault delay. Both DELTA and WYE systems may be monitored.

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