Selection Guide

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Class 52 Pilot Devices
Oil Tight—Pilot Devices______
General
Features
• Octagonal Mounting Nuts
• Meets NEMA 1, 3, 4, 12, 13 and
Automotive Standards
• Heavy Duty Rated NEMA A600
Contacts
• Positive Indexing Selectors
• Bifurcated Movable Contacts
• Attractive Chrome Plating
• Boots Not Required for NEMA 4
• UL Listed File # E22655
• CSA Certified File # LR6535
Application
Oil tight pilot controls and accessories
are designed to provide long, trouble
free service in the most demanding
industrial applications. These controls
are oil and dust tight and meet NEMA
3, 4, 12 and 13 specifications.
Features
Rugged Industrial control operators are
durable one piece castings. Heavy duty
plastic buttons resist oils and corrosion.
Silver contacts carry heavy duty ratings.
Flexible accessories modify standard
push buttons, selector switches and
pilot lights. Building block construction
of contact blocks makes possible many
circuitry combinations.
Industrial Appearance
Pilot controls add luster to panels.
Chrome plating covers exposed metal
parts.
Push Button Operators
The Operator Base consists of a
durable, one piece casting equipped
with a heavy duty acrylic actuator with a
stainless steel spring, a neoprene actua-
tor sealing ring to prevent oil and dust
from penetrating to the contact blocks,
a neoprene gasket to seal operator
mounting hole and a chrome plated
lock nut.
Electrical Ratings
NEMA AC Ratings 50/60Hz
NEMA A600 10 Cont. Amps
Volts Make
120 60
240 30
480 15
600 12
VA 7200
Break
6
3
1.5
1.2
720
Maximum Panel Thickness: Vi"
Ordering Information
*• Accessories see page 557.
* Selector Position and Contact Operation see
page 554.
*• Legend Plates see page 558.
> Enclosures see page 556.
Mushroom Head Push Button
Operators
The Mushroom Head base construction
is identical to the push button base. The
actuator is molded of high impact mate-
rial for either a 1
5
/s inch or 2
1
/2 inch
diameter molded acrylic head.
Contact Blocks
Contact Blocks have double break bifur-
cated silver contacts which improve
contact fidelity. Contact blocks are
heavy duty rated NEMA A600 and suit-
able for applications with low current
draw. Molded bodies and pushers resist
arcing and tracking. All units have stain-
less steel springs that resist corrosion
and provide strong contact pressure.
Captive mounting screws speed panel
assembly.
Push Pull Operators
Push Pull Operators combine two or
three functions in one unit. The main-
tained operator has two positions, typi-
cally pull to start, push to stop. The
momentary operator with three posi-
tions provides spring return from both
pull and push positions. These units are
also available with a pilot light.
2 Button Maintained Operator
Maintained Push Buttons consist of two
push buttons and a latching assembly.
When actuated the button remains
depressed and is freed only by the
release operator to which it is linked.
The button assembly adjusts for mount-
ing from a 1
13
/ie inch to a 2
5
/B inch center.
Pilot Light Push Button
Selector Operator
Transformer Type Pilot Lights
Transformer Type Pilot Lights are avail-
able with a 120, 240, 480 or 600 Volt
primary (50/60 Hertz) and a separate
secondary winding which supplies
reduced voltage to a miniature bayonet
base 6 Volt lamp. These units are suit-
able for applications where vibration is
present and long bulb life is desirable.
Full Voltage Type Pilot Lights
Full Voltage Pilot Lights are available for
6, 12, 24, 120 and 240 Volt AC and DC
applications. The 240 Volt pilot light is
supplied with a 120 Volt lamp and a
voltage dropping resistor.
LED Type Pilot Lights
LED's (light emitting diodes) are used in
pilot lights instead of incandescent
bulbs because of their long life (up to
10 years), resistance to vibration and
ambient sensitivity.
Selector Operators
Selector Lever Operators with positive
action indexing have a short or long
lever which makes them easy to turn.
The molded black lever is designed to
accept eight color inserts. Each opera-
tor is equipped with a cam to actuate
plungers of contact blocks assembled
behind the operator. Two, three and
four position operators are available
with seven different cams.
Lever color inserts are available in 3
colors.
Selector Push Operation
Siemens & Furnas Control Products
546
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