Matsushita Micro switch - drop in repalcement advice

J

jezzalenko

New Member
Hi,

working on a Sanyo TP 625 that has a faulty micro switch. was wondering if anyone had advice on a drop in replacement for a

Matsushita Micro Switch AM4100 (3A 125VAC, 2A 250VAC)

that isnt on ebay preferably, and is not obselete. Available from a large supplier (RS online, Digikey, mouser, element 14) Looking to match with the screw holes, height and rough approximation of size. Failing that, height and rough approx of size.

Mat micro switch 1.jpg Mat micro switch 2.jpg Mat micro switch 3.jpg
 
ok mate. I found this too, but the shipping is $100+ to australia....Anyone else using a drop in replacement available from large suppliers (RS online, Digikey, mouser, element 14)
 
 
The matsushita switch is usually a very low pressure actuation and the plastic insulator is there as they are usually screwed to a metal bracket in the TT mechs.

None of the links above have insulation around the terminals.

You can of course use a non plastic-shielded modern one, but beware the actuation force in the mechanism and make sure it is extremely well insulated and have some thin elephant hide insulator between the switch and the metal chassis plate.
 
restorer-john said:
The matsushita switch is usually a very low pressure actuation and the plastic insulator is there as they are usually screwed to a metal bracket in the TT mechs.

None of the links above have insulation around the terminals.

You can of course use a non plastic-shielded modern one, but beware the actuation force in the mechanism and make sure it is extremely well insulated and have some thin elephant hide insulator between the switch and the metal chassis plate.
Click to expand...

Cheers, very interesting to know that many modern ones do not have the insulation around the terminal. Definitely have to look at a mod to insulate properly.

The advice on low pressure actuator is very handy too. Can you suggest a brand that uses low pressure actuators that would be suitable for a turntable?
 
restorer-john said:
The matsushita switch is usually a very low pressure actuation and the plastic insulator is there as they are usually screwed to a metal bracket in the TT mechs.

None of the links above have insulation around the terminals.

You can of course use a non plastic-shielded modern one, but beware the actuation force in the mechanism and make sure it is extremely well insulated and have some thin elephant hide insulator between the switch and the metal chassis plate.
Click to expand...

I'm looking at a few switches with a 1.47N - is this operating force something you'd consider low restorer-john? sounds like you would have a good idea by your name ;-)
 
Omron quote the actuation pressure in their data sheets or website.

Does the old Matsushita still actuate OK, because you can press it slowly against kitchen scales until it actuates and read off the force required.

If it's just an auto return semi, you can likely get away with practically any of them, it's just that the high actuation pressure (usually 10A or more contact rating) may throw the arm sideways a little when you lift it off the rest.
 
restorer-john said:
Omron quote the actuation pressure in their data sheets or website.

Does the old Matsushita still actuate OK, because you can press it slowly against kitchen scales until it actuates and read off the force required.

If it's just an auto return semi, you can likely get away with practically any of them, it's just that the high actuation pressure (usually 10A or more contact rating) may throw the arm sideways a little when you lift it off the rest.
Click to expand...

Thanks Restorer-John, good advice. I'll convert the grams to newtons if required. Thats enough info for me to go on from here.
 

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