Hand Off Auto Switch Contacts

L contact blocks are shown in their normal position.

Hand off auto switch contacts.

Select a cam and index code from table 2 on page 9. Contact hand off auto legend plate. The switch is a three position switch that can be used to manually change the direction of rotation of a three phase motor. A typical hand off auto control operation typically requires a how many position selector switch with how many contacts.

Select a maintained 3 position hand off auto selector switch with standard knob and three circuits as shown. Choose from our selection of hand off auto switches including metal 30 mm panel mount lever switches steel enclosed lever switches and more. Code kc1 or kc7 would be equally effective. Learn how this truth table illustrates the manual or automatic contact po.

4 position is blank. A combination push button station with a hand off automatic switch and pilot lamp is shown in figure 27 3. Use kc1 for this example. Black selector switch attached to a mounting base 1 n o.

Select an operator prefix from table 1 on page 9. A modulating valve has a control switch labeled hand off auto located near the valve. In stock and ready to ship. Selector switch 3 position 30mm knob maintained nema 4 13 selector switch 3 position 30mm knob black with white insert kb7 cam 1 normally open 1 normally closed contact blocks nema 4 13 available in select areas.

Draw and label the nema sybols for both a two position off on selector switch and a three position hand off auto selector switch. M short style operators are suitable for class i group c d class ii group e f g only. Xo x oox xo o 1. Identify the following switch symbol.

Oil tight watertight and dust proof. Contact position on a selector switch can easily be illustrated using truth tables. In hand the valve can be jogged open or close right at the switch. 3 position marked hand off auto and blank on other side.

2 position marked off on and blank on other side. In hand the motor would run continuously and in auto the motor would start and stop by a plc or other controller. Consider a second example. The included legend plate establishes two selections for activating a process and one to turn off all functions.