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808-J1
Allen-Bradley/Rockwell
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New / Used
Stocked, Ships in 1-5 days
5 kg
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●The Bulletin 808 speed switch is a pilot device which is used with an automatic starter arranged for reversing or plugging duty to provide plugging orantiplugging of squirrel cage motors. This device can also be used as a speed sensing switch, or to indicate direction of rotation of a driven shaft.
●Plugging is a control function that provides braking by reversing the motor. The phase sequence is reversed so that the motor develops a counter-torque that exerts a retarding force. Antiplugging protection is the effect of a control device that operates to prevent the application of counter-torque by the motor until the motor speed has been reduced to an acceptable value.
●The Bulletin 808 speed switch is a pilot device which is used with an automatic starter arranged for reversing or plugging duty to provide plugging orantiplugging of squirrel cage motors. This device can also be used as a speed sensing switch, or to indicate direction of rotation of a driven shaft.
●Plugging is a control function that provides braking by reversing the motor. The phase sequence is reversed so that the motor develops a counter-torque that exerts a retarding force. Antiplugging protection is the effect of a control device that operates to prevent the application of counter-torque by the motor until the motor speed has been reduced to an acceptable value.
