MICRO SWITCH™
Snap-in Panel Mount Basic Switches
DM | DP Series
Datasheet
MICRO SWITCH™ DM | DP Series
Snap-in Panel Mount Basic Switches
MICRO SWITCH™ DM/DP basic switches are designed for a variety of applications, and known for their compact,
lightweight design and accurate repeatability. The DM/DP Series is a special application precision switch that can be
used in a variety of applications, including appliance door lights and door interlocks, as well as service panels.
The DM/DP Series snap-action switches have momentary, push-pull, and pull-to-cheat configurations. The quick-
connect terminals and snap-in, panel-mount housings provide easy installation. In addition to the standard quick-
connect terminals (4,78 mm x 0,51 mm [0.188 in x 0.020 in]), larger 6,35 mm x 0,81 mm [0.25 in x 0.032 in] quick-
connect terminals can be provided.
What makes our switches better?
•
The right switch at the right cost for the product performance
Series meets industries’ most common standard applications
eliminating need for product modifications
Repeatable and consistent performance for up to
one million lifecycles
DP Series meets UL 508 requirements with extended electrical
endurance for industrial applications
INDUSTRY STANDARD
VALUE • RELIABLE
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Features
and Benefits
EASY INSTALLATION
Attractive, rugged
snap-in design
allows these switches to be easily installed.
Quick-connect terminals reduce installation time.
VARIETY OF CIRCUITRIES AND OPERATING ACTIONS
DM and DP Series switches offer a choice of
momentary, push-pull, or pull-
to-cheat
actions to meet equipment requirements. Circuitry options of
SPDT,
DPDT, and SPNO
fit a number of applications.
Options for low energy circuits
LONG LIFE
With a mechanical life of up to
1,000,000 operations,
DM and DP Series
switches deliver repeatable and consistent performance.
UL 508 for industrial control equipment
WIDE OPERATING TEMPERATURE RANGE
DM and DP Series operate from
-37 °C to 82 °C [-35 °F to 180 °F]
to meet
many different environmental requirements.
EASILY CONTROLS LOW-VOLTAGE DC APPLICATIONS
Switches available with a choice of
silver or gold-alloy contacts
to handle a
variety of electrical load requirements.
MEETS UL 508
DP Series meets Industrial Control Equipment’s (UL508) requirements with
extended electrical endurance of 100,000 operations for long-life applications.
NORTH AMERICAN APPROVALS
DP: UL recognized file #E22779, CSA certified file #LR4442
DM: UL recognized file #E12252, CSA certified file #LR4442
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Potential Applications
APPLIANCE DOOR LIGHTS
Used in turning lights “on” in refrigerators and freezers when the door is opened
DOOR INTERLOCKS
Found as a door interlock on residential HVAC equipment and service panels to
interrupt power when door access panels are opened
INDICATOR CIRCUITS
Often used for general purposes to turn lights “on” or “off” when doors and/or
panels are opened
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MICRO SWITCH™ Snap-in Panel Mount Basic Switches
Table 1. Specifications
Characteristic
Description
Actuators
Terminations
Amp rating
Operating temperature
Operating force
Mechanical life
Circuitry
Voltage
Approvals
Parameter
snap-in panel mount basic switch
momentary action
push-pull
push momentary, pull-to-cheat
quick connect, 4,78 mm x 0,51 mm [0.188 in x 0.020 in]
10 A, 16 A
-37 °C to 82 °C [-35 °F to 180 °F]
4,17 N [15 oz] max.
1 million operations, 95 % survival
SPNO, SPDT, DPDT
125 Vac, 250 Vac, 277 Vac
UL, CSA
Table 2. Electrical Ratings
Series
DM
DP
Electrical rating
UL and CSA rating: 10 A, 1/2 HP, 125, 250 or 277 Vac
UL standard 508, 14 A, 3/4 HP, 125, 250 Vac;
Pilot Duty: 150 V A – 125, 250 Vac; 16 A, 125, 250, 277 Vac; 3/4 HP, 125, 250 Vac
MOMENTARY ACTION
Momentary action switches are available in a choice of concave,
convex, or bullet nose plunger styles.
Concave plunger
Convex plunger
PUSH-PULL
When plunger is depressed, it remains in the depressed position
and maintains circuit transfer. Switch contacts return to the previ-
ous position when the plunger is pulled to the original extended
position.
PULL-TO-CHEAT
Pull-to-cheat operates normally as a momentary action switch.
However, by pulling the plunger beyond the normal free position, a
Bullet-nose plunger
Pull-to-cheat plunger
maintained-on position is achieved.
POSSIBLE VARIATIONS
In addition to the standard quick-connect 4,78 mm x 0,51 mm
[0.188 in x 0.020 in] terminals, 6,35 mm x 0,81 mm [0.25 in x
0.032 in] terminals can be provided. The quick-connect terminals
can be provided with terminals formed at different angles. DM
plungers and faceplates are available in combinations of white,
black, gray, or red.
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