6 Terminal Spdt Continuous Duty Solenoid

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6-terminal vs. 4-terminal solenoids (1 Viewer)

• Thread starter RescueU
• Start date Mar 13, 2008

• #1

6-terminal vs. 4-terminal solenoids *need some quick info, pls

Has anyone used a 6-terminal solenoid with their dual battery config, versus the standard 4-terminal models?

What are the extra pair of terminals used for? How's the connection pattern?

Thanks!

Last edited: Mar 13, 2008

Joined

Aug 30, 2006

Messages

3,919

Location

Phoenix, AZ

• #2

Well, AFAIK, the second set of terminals is like a separate solenoid. The two sets of terminals can be activated with one 12v signal.

Someone correct me if I'm wrong...

• Thread starter
• #3

Thanks for the info, Lane.

Does anyone have any practical experience with different applications that utilize this extra set of terminals on the solenoid?

Thanks!

• #4

Thanks for the info, Lane.

Does anyone have any practical experience with different applications that utilize this extra set of terminals on the solenoid?

Thanks!

As I recall this type of solenoids were used to power the starting motor and the extra contacts are for bypassing the external coil resistor as to provide full 12 volt to the coil when turning on the vehicle when you require a maximum spark and after is running, the coil is powered through the external resistor with reduced voltage and extend the coil life. Common in older Ford vehicles.

Joined

Mar 28, 2003

Messages

1,192

• #5

Has anyone used a 6-terminal solenoid with their dual battery config, versus the standard 4-terminal models?

What are the extra pair of terminals used for? How's the connection pattern?

Thanks!

Yes I used one. The one I used is a NAPA ST552 and is called a reversing solenoid. They are used in golf carts and fork lifts and are rated continuous duty. Here is a picture of one and the wiring diagram. The ST552 is 12 volt. Some solenoids are 24 volts so a coil check would have to be made. I had two isolators go bad and 1 solenoid before I found these and then never had a problem after 2 years of running it. You can do a search for golf solenoid using my name for other information if you want. HTH

Bill

• #6

Yes I used one. The one I used is a NAPA ST552 and is called a reversing solenoid. They are used in golf carts and fork lifts and are rated continuous duty. Here is a picture of one and the wiring diagram. The ST552 is 12 volt. Some solenoids are 24 volts so a coil check would have to be made. I had two isolators go bad and 1 solenoid before I found these and then never had a problem after 2 years of running it. You can do a search for golf solenoid using my name for other information if you want. HTH

Bill

Bill: any idea how many continuous amps they can handle and if they are the NC type or according to the polarity on I and S they close one pair of contacts at a time ?

Last edited: Mar 15, 2008

Joined

Mar 28, 2003

Messages

1,192

• #7

Bill: any idea how many continuous amps they can handle and if they are the NC type or according to the polarity on I and S they close one pair of contacts at a time ?

Yes, 85 amps continuous.

In the picture the top 2 terminals are normally closed (NC) and the side 2 are normally open (NO). When the coil is pulled with the front "I" and "S" the top 2 open and the side 2 close. (Exchange)

Bill

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