Allen Bradley 813S Relays

The Allen Bradley 813S series relays can be used in industrial automation and control systems, and they are designed to be durable and reliable. They are voltage-monitoring types of relays that can be used as supplementary protection devices for motor control circuits. The 813S relays are easy to install and apply to the motor control circuits that they protect. The 813S relays can be applied to motor control circuits in compressors, fans, blowers, and pump systems. These relays monitor the voltage quality in the incoming power lines in their host systems, and they can protect the connected motor control circuits from a variety of errors. The 813S relays can protect the circuits from phase losses, phase reversals, and phase imbalances. They can also protect the circuits from overvoltage and undervoltage. However, the 813S relays do not provide overcurrent or undercurrent protection. The 813S relays can operate safely in Pollution Degree 3-rated environments and they feature IP20-rated enclosures.

The Allen Bradley 813S voltage-monitoring relays are available in single-phase or 3-phase voltage models, and different models are available with different voltage ratings. Single-phase 813S relays are available with operating voltage ranges of 2 to 500 Volts AC/DC, 24/48 Volts AC/DC, or 115/230V AC. Likewise, 3-phase 813S relays are available with operating voltage ranges of 110 to 115 Volts AC, 208 to 240 Volts AC, 380 to 415 Volts AC, 440 to 480 Volts AC, or 600 to 690 Volts AC. The time delay settings in the 813S relays are adjustable. Users can select the time delay setting that is most appropriate for a specific application. Single-phase 813S relays can support a programmable latching feature or an "inhibit at set level" feature. Additionally, single-phase 813S relays support 1 changeover or SPDT contact, and 3-phase 813S relays support 2 changeover or SPDT contacts. All of the 813S relay models include status indicators and support automatic resetting. The approximate dimensions of the single-phase 813S relays are 22.5 x 80 x 99.5 mm. The approximate dimensions of the 3-phase 813S relays are 45 x 80 x 99.5 mm.