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Switches |
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There
are few devices or circuits that do not have a switch of some sort, all designed
to meet your
specific needs. Here's a small listing of what Farnsworth
Electronics, Inc. has to offer: |
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Farnsworth Electronics, Inc. carries
a huge inventory of switches for all applications.
Click on the type
of switch you are looking for below
to view the Philmore PDF file. Adobe Required. |
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We've got one of
our featured vendors, Philmore Manufacturing's
catalog available online. |
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Click here to
see the catalog. |
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Accessories
136,
149, and
232 |
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Appliance
176,
177,
178, and
179 |
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Audio / Video
78,
79, and
80 |
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Automotive
186,
187, and
188
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Dimmer
180 |
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DIP
175 |
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Lighted Pushbutton
165 and
167 |
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Lighted Rocker
155,
157,
158,
159,
160,
161, and
162 |
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Lighted Toggle
145,
150, and
186 |
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Key
184 |
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Magnetic Reed
181 and
182 |
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Marine
186,
187, and
188 |
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Mercury Tilt
180 |
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Mini-Toggle
142 and
143 |
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Pushbutton
163,
164,
165,
166,
167,
168, and
175
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Rocker
152,
153,
154,
155,
156,
157,
158,
159,
160,
161, and
162 |
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Rotary
175 |
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Round Rocker
158,
159, and
160 |
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Slide
185 |
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Snap Action
(Microswitches)
169,
170,
171,
172,
173, and
174 |
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Specialty Switches
183 and
184 |
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Tilt Switches
180 |
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Toggle
143,
144,
145,
146,
147,
148,
149,
150, and
151 |
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Vandal Resistant
174 |
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Terms to Know |
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Actuation Force:
The force required to move the actuator of a switch from one position to
another.
Actuator: A
movable part of the switch that causes a change in the electrical configuration
of the switch
(i.e. - toggle, rocker, slide, plunger, etc.). |
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Alternate Action:
Also known as "Push-Push", push to close the switch contacts then push
again to open
the contacts.
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DP (Double Pole):
A switch device that opens, closes, or changes connection of two conductors in
an
electrical circuit. |
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DPDT (Double Pole Double Throw):
A switch device that opens, closes, or changes connection of two
conductors in
an electrical circuit and completes a circuit at both extreme positions of it's
actuator. |
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Momentary Action:
A switch position where the actuator returns to the starting position when the
actuation
force is removed, also called "spring return". |
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Normally Closed: Normally
closed contacts are closed when the actuator is in it's un-actuated or
"free"
position. |
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Normally Open:
Normally open contacts are open when the actuator is in it's un-actuated or
"free" position. |
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Pole: The
number of separate circuits that can be operated by a switch at any time. A
single pole switch
allows one closed circuit at a time, while a double pole
switch allows two closed circuits at a time, etc. |
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SP (Single Pole):
A device that opens , closes, or changes connection of a single conductor in an
electrical
circuit. |
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SPST (Single Pole Single Throw):
A
switch that opens, closes, or completes a circuit at only one of the
extreme
positions of it's actuator. |
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Throws:
Number of circuits that can be controlled by one pole of a switch. In a single
pole double throw switch, only one circuit can be connected at a time, but there
are two possible circuits (throws) that can be made. |
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