A dpdt switch to reverse the polarity in the loop and then throw the ground throw. Industec toggle switch 3 position polarity reversing dc motor control maintained 12v 250 quick connect 6 pin double pole double throw spade plug wwires 50 out of 5 stars 2 1480 14.
Industec Wired 20 Amp 12v Dc Motor Polarity Reversing Rocker Momentary Automatic Reset Switch
Automatic polarity reversing switch. Industec wired 20 amp 12v dc motor polarity reversing rocker momentary automatic reset switch. Simple polarity reversing switch step 1. If we changed the polarity of the loop power while the train is in the loop the train would suddenly change direction. If you throw both switches simultaneously you can do both while the train is in motion. To make my instructions a little more easy to. 45 out of 5 stars 100.
Wiring for this switch is deadly simple. However all is not necessarily lost. When this happens the train will also reverse direction. Use a double pole double throw switch to manually allow for reversing. If you are using ground throws you will need to make it a two step process. Analog does not maintain a constant on rail voltage varying voltage level being the inherent speed control and therefore cannot do auto polarity switching.
The toggle switch will reverse the polarity of the rails in the reversing section once the train is in the loop. Get it as soon as tue jul 21. Amazons choice for reverse polarity switch industec wired 20 amp 12v dc motor polarity reversing rocker momentary automatic reset switch 49 out of 5 stars 35. Gama electronics 30 amp toggle switch 3 position polarity reversing dc motor control momentary. 49 out of 5 stars 35. As you can see every time a train travels around the reversing loop the track polarity must be changed and the track switch must be set.
Industec toggle switch 3 position polarity reversing dc motor control maintained 12v 250 quick connect 6 pin double pole double throw spade plug wwires 50 out of 5 stars 2 1480 14. Enjoy and leave me. If you are using a snap motor you can use a switch with two more poles to reverse the polarity when you activate the turnout. Therefor we must change the main track polarity while the train is on the loop track. Automatic polarity reverser units are possible with dcc due to the highconstant voltage on the rails. To keep the train moving forward you must also change the direction on the throttle.
You need to decide if you want to purchase a switch or salvage one from something else. Use one digitrax booster set for automatic reversing and another set for normal operation.
Gallery of Automatic Polarity Reversing Switch
