- The W3TS Test Switch, a miniature knife blade
switch (5/8 inch centers including barrier)
with #10-32 stud terminals, is available in three
types:
- basic switch
- short-circuiting switch (shorting switch)
with make-before-break element and common
bar
- test jack switch
- All switches may be either front or back connected.
- Front-connected switches are mounted
on the front of a panel and are both operated
and wired from the front.
- Back-connected
switches are mounted on the front
of a panel with extended terminal studs
projecting through to the rear of the
panel. This allows them to be operated
from the front and wired from the back.
Additional barriers and spacers insulate
the extended terminal studs.
- The three types of switches can be arranged in
any combination of elements with 1 to 52 poles
in a single block. The arrangements can also include
single terminals, through bars and blank spaces.
Diagrams of standard elements are available
in the Element
Definition Document.
- The operator can choose to open or close the W3TS
switch by placing a standard 5/16" nut driver
on the patented TestSwitch
safety knob. Pull up to open, down to close. It
keeps fingers away from current-carrying parts. (See Safety
Knob Instructions.)
- Our patented footed barriers separate the switches
and wrap beneath them to form a non-conductive
mounting plate for the switch block. No metal
mounting plate and no potting. Mounting rods
support the weight of the block. Stainless steel
mounting ears at each end of the block attach
it to any surface.
- Each W3TS switch can be operated independently
or, for simultaneous operation, adjacent handles
can be ganged together with an insulated yoking
bar. Switches can be electrically connected with
a common bar.
- Standard handle colors are red for potential and
black for current. A variety of colored handles,
marker tags and tamper-proof covers that accommodate
wire seals are available.
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