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INTRODUCTION 

 

Thank you for purchasing a Parallax Power Supply, Model 

ATS5070

 

series automatic Line/ Generator RV transfer switch. We are confident 
that the 

ATS 5070

 series model you have purchased will give you 

outstanding performance for many years. If you have any questions or 
comments about this product, please contact Parallax’s customer service 
representative at the address or phone and fax numbers listed below.

  

 

Parallax Power Supply, L.L.C. 
425 Sycamore St. 
Anderson, IN 46016 
Phone: 800-443-4859 
Fax. : 765-608-5235 

 

GENERAL INFORMATION 

 
The 

ATS 5070 

series is designed to automatically switch the on board 120 or 

240-volt appliances to generator power when the generator is activated.  
 
No longer do you need to go outside, remove the shoreline cord from the pole and 
plug it into the generator receptacle. You simply start the generator and the 

ATS5070

 will switch the loads for you. 

 

OPERATION 

 

After the ATS 5070 is installed using one of the typical installations shown in this 
manual, it will be ready for years of trouble free service. Operation is automatic 
and is maintenance free. 

FROM SHORELINE: 

To operate appliances from shoreline power, simply plug in the shoreline cord to 
the power pole at the campground or dock. The 

ATS 5070

 automatically 

connects all AC Appliances to shoreline power. 
 

FROM GENERATOR: 

To operate appliances from on board generator simply start the generator. 
After about a 20 second delay to allow the generator to stabilize the ATS 5070 
will engage, transferring all 120 or 240-volt appliances connected to the ATS 
5070 load terminals to the generator. 
 
 
 
 

 
 
 

AUXILIARY CONTACT OPERATION 

 

The 

ATS

 

5070

 series RV line generator switch when connected as in the typical 

installation 

II 

shown below may control other equipment in your vehicle. The 

auxiliary contacts are rated for 50 A@ 120/240 VAC operation and will switch 
other loads as the 

ATS 5070 

switches from shore power to generator. These 

contacts are supplied as non-energized dry contacts. 
 
 

MODEL 5070   LINE / GENERATOR SWITCH

                           Typical Installations

Rated - 50A 120/240 Volts 60Hz, Neutral rated 70A with optional jumpers  installed.
Auxiliary dry contacts rated 50 A -240 Volts.

                                               INSTALLATION  I

 LOAD

    L2

** Note: Circuit1 and Circuit 2 in phase.

INSTALLATION  II

    L1  

120 / 240
50 A - SHORE

   NEUT.

LOAD

LINE POWER

    L2

L1

L2

                 C

    DRY AUX.

                 NC

   CONTACTS.
   RATED 50A

                 NO       240 V

NEUTRAL

       

               ATS 5070
     With optional jumpers
      installed.

120 / 240
 50 A - SHORE
  LINE  POWER 

   L1

   NEUT.

 
 120 V - 2 CIRCUIT
    GENERATOR

   ** Circuit 1
120 V - 35 A Max.

   ** Circuit 2
120 V - 35 A Max.

     Neutral rated
       70 A Max.

               ATS 5070

      120 / 240
      50 A - Max.
     GENERATOR 

 

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