MOTM

NKK MB2011SS1W01 (pushbutton)
with
NKK AT407C (cap)
with
NKK AT512CH (conical nut)

The buttons which Paul has specced for the '600 and
'650 are not "standard" for all other modules.  They
are really more for the more digital modules in the
line-up.

Moe has proposed a standard pushbutton (E-Switch
RP3502MA-RED at
http://www.hotrodmotm.com/parts_list.htm), and one
that many people have used for the DIY and conversion
projects.

While I personally like the E-Switch button, it does
not really fall into line with some of the other items
which are already standard for MOTM.

This is in the same series of switches (M and MB2000 
Series) which are already specced and standard for
MOTM.  When comparing, please note the Moe has
incorrectly listed for the SP switches.  The NKK part
numbers should begin with "M201".  The 0 and 1 just
got reversed.  Everything else is correct.

This switch is not made in SPST, so SPDT has been
selected.  You just do not connect part of the
circuit.  So it is an On-(On) switch which we will
have functioning as a Off-(On) switch.  The
parenthesis denote momentary function for those not
familiar with this nomenclature.

I have specified the Screw-on Cap (S), but that is up
for debate.  The cap specified also reflects this.

The bushings, ratings, materials and terminals are the
same as the other MOTM switches.

I have specified the larger of the two cap sizes in
red (the latter is also up for debate).  The number I
have listed does not include the cap.  I think most of
the parts supply houses supply this separately to help
better manage inventory.  AT407C is the large size cap
in red PBT.

The number of pushes you can safely get out of the
switch is at least 50,000.  But since we are putting a
realtively low voltage through the switch (compared to
what it is rated) at a much lower amperage, I estimate
this number to be closer to be well over 1,000,000.  

This button takes a 3/8" hole in the panel as with the
other switches and jacks.  Each switch comes with 2
hex nuts we all know and love and one (F-11 style)
lockwasher.

Finally, the third part specified is a conical nut. 
This helps add stability to the switch when being
pressed, helps prevent damage from being struck from
the side and helps prevent anything from being caught
under the bottom lip of the button itself.  And I
think it looks nicer.

There are other pushbuttons available from NKK.  The
problem is that most of them have smaller surface
areas to push on.  The only advantage to using another
pushbutton is the snappiness or speed of pressing and
depressing the button.  Additionally, this is a
momentary switch as opposed the a snap type. 
Comments???  Other possibilities are SCB Series (e.g.
SCB25S10D-3CA), SB Series (e.g. SB221NO with ATT414
cap) or MB2400 Series (e.g. MB2411S1W01-HC w/ AT512
(also AT 532, AT533 or AT501)).

Here is some info from the supply houses which carry
this series of pushbuttons:

Allied
http://www.alliedelec.com/catalog/catalogpages/2002/935.pdf
Switch Zone
http://us.switchzone.com/pdf/MB2000Bushing.pdf
Mouser
http://www.mouser.com/catalog/612/595.pdf

--Shemp

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