Question 1

What is the diameter of the retaining screw ring or of the threaded collar (what size hole opening does it fit)? For a vintage vanity light. Thanks.

Accepted Answer

1/2 inch.  a better switch for a vanity light would be smaller and require a 1/4 inch hole. A mini bat toggle switch SPDT.  Two or three amp rating should be enough.

Question 2

im trying to fine a on and on switch that go back to off when you release it

Accepted Answer

Actually, the listing does NOT clearly state whether or not it is momentary contact.  You have to go to the Gardner Bender site to figure out what these are.  The Amazon listing title has parentheses around the word (OFF).  It should not.  Go to the Gardner Bender website and search GSW-16 and you will not see any parentheses anywhere in the circuit specification.  You have to be very careful buying DPDT switches based on the Amazon listings.  You are better off finding what you think is right and going to the manufacturer's website to see if the model number is the right one for your application.  You could be looking for a GSW-123 or something similar.

Question 3

Can this be use as a kill switch on a car?

Accepted Answer

Yes, it can be used as a kill switch, but it depends on what circuit you're interrupting. Keep in mind how much current will go through the switch (rating is 20 A, 125 V AC).

Question 4

Wire diagram for on-off-on gsw in line. if i let go power is off? thanks

Accepted Answer

This switch is a Double Pole, Double Throw switch, which means all contacts are broken when the toggle is in the center position.  When the toggle is pushed in either direction the contacts on that side of the switch make contact.  For sake of discussion, assume we are speaking of the one set of contacts along the long side of the switch.   When the switch is pressed forward the center and far (still along the long side) contacts will make contact.  When the switch is pulled back, the center and near side make contact.  It is also a Momentary On which means the contacts will only make contact while the toggle is pressed.  Once released the toggle automatically returns to center which is usually the off position.   I hope this helps.  If you are still puzzled, ask the same question and specify you want a wiring diagram.

ASIN	B00004WLK5
Best Sellers Rank	#203,865 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,654 in Electrical Wall Switches
Brand Name	Gardner Bender
Color	Single Pole-Single Throw
Connector Type	Screw
Contact Material	Copper
Contact Type	Normally Open
Current Rating	20 Amps
Customer Reviews	4.6 4.6 out of 5 stars (795)
Global Trade Identification Number	00032076890117
Insulation Resistance	100 Megaohms
International Protection Rating	IP57
Item Type Name	Heavy-Duty Toggle Switch
Item Weight	0.07 Pounds
Manufacturer	GB Electrical
Material Type	Metal
Maximum Current	20 Amps
Model	GSW-11
Mounting Type	Panel Mount
Operating Voltage	125 Volts
Operation Mode	ON-OFF
Part Number	GSW-11
Specification Met	Ul
Switch Type	Toggle Switch
Terminal	Screw
UPC	032076890117
Unit Count	1 Count
Upper Temperature Rating	75 Degrees Celsius
Voltage	250 Volts

Gardner Bender GSW-11 Heavy-Duty Electrical Toggle Switch,

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