MICRO SWITCH™
Premium Subminiature Basic Switches
SM Series
Datasheet
MICRO SWITCH™ SM Series
Premium Subminiature Basic Switches
The industry-defining name in snap-action switches, Honeywell MICRO SWITCH™ premium subminiature
switches are designed for repeatability and enhanced product life. The MICRO SWITCH™ SM Series
delivers consistent performance within a range of conditions.
The MICRO SWITCH™ SM Series’ small size and light weight are combined with ample electrical capacity,
precision operation, and extended life. Featuring high precision and repeatability, the SM Series offers gold
contacts for low-energy switching and gold bifurcated contacts for maximum reliability. Bifurcated contacts
provide parallel redundancy within the SM switch.
The SM switch is available for power-duty switching up to 11 A (Vac) or 1/4 HP (Vac).
What makes our switches better?
•
Industry-leading life cycle rating reduces the need to
replace switches over life in an OEM platform – reducing
total system cost
Very wide temperature range allows for years of reliable
performance in the harshest of conditions
MIL-PRF-8805 qualfied listings
Operating forces as low as 0,06 N [6 g] and differential travel
as low as 0,025 mm [0.001 in] delivers consistent, precise
switch characteristics
Designed for
precision applications.
COST OPTIMIZATION • PERFORMANCE
RELIABILITY • GLOBAL ACCEPTANCE
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Features
and Benefits
LONG LIFE
With a mechanical life of up to
10,000,000 operations,
SM Series switches
boast an industry-leading life cycle.
APPLICATION FLEXIBILITY
MICRO SWITCH™ SM Series delivers a selection of actuation, electrical
termination, and operating characteristics along with
high-temperature
construction options.
Life of up to 10,000,000 cycles
INDUSTRY-LEADING TEMERATURE RANGE
With a wide temperature range of -54 °C to 204 °C [-65 °F to 400°F],
SM Series switches allow for
years of reliable performance in harsh
conditions.
Precise switch characteristics
COMPACT AND ROBUST
Built from
military-grade components,
MICRO SWITCH™ SM switches
deliver MIL-PRF-8805 qualified listings in a lightweight, small package. MICRO
SWITCH™ SM switches are available with FAA-PMA approvals for commerical
aircraft applications.
EASILY CONTROLS LOW-VOLTAGE DC APPLICATIONS
Switches available with a choice of
silver or gold-plated, or gold bifurcated
contacts
to handle a variety of electrical load requirements.
GLOBAL APPROVALS
UL/CSA, cUL, ENEC, and CE approvals allows the customer to
utilize switches
in products sold across the globe
- in some of the most regulated regions.
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Potential Applications
AEROSPACE
• In precision switch assemblies for commercial aircraft to monitor doors for
“closed” and “locked” position
• Monitor whether landing gear is “up” or “down and locked”
• In precision switch assemblies for commercial cockpit applications for
pushbuttons, toggle, or joystick assemblies
• MIL-PRF-8805 listings suitable for precision switch assemblies in military
applications
• FAA-PMA approvals for commercial aircraft
INDUSTRIAL
• In precision switch assemblies for pressure switches and temperature switches
• In power generation, fuel level switch for gas and oil
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MICRO SWITCH™ Premium Subminiature Basic Switches
Table 1. Specifications
Characteristic
Differentiator
Ampere rating
Circuitry
Operating force
Termination
Actuator
Voltage
Agency approvals
Agency file information
Operating temperature
Contacts
Housing
Sealing
Mechanical life
Size
Parameter
low operating force to 2 oz. max; power load switching capability to 11 A;
motor load handling capacity to 1/4 HP (Vac)
0.1 A to 11 A
SPDT
0.04 oz to 2 oz
quick connect, solder, pcb
pin plunger, straight lever, roller lever, simulated roller lever, paddle lever
115 Vac, 125 Vac, 250 Vac, 30 Vdc
UL, CE, CSA, ENEC, MIL-PRF-8805, FAA-PMA
CE: 61058-1; UL: E12252; CSA: LR41372
-54 °C to 121 °C [-65 °F to 250 °F]; select catalog listings 204 °C [400 °F]
silver, gold plated, bifurcated gold
phenolic
sealed plunger on 411SM Series, other SM Series not weather sealed
up to 10,000,000 operations for 11SM listings
up to 80,000 operations for 1SM/14SM listings
up to 1,000,000 operations for gold bifurcated contacts
12,7 mm H x 6,35 mm W x 20,3 mm L [0.5 in H x 0.25 in W x 0.8 in L]
Electrical data and UL codes
Table 2. UL Electrical Ratings
Code
J
K
M
N
P
R
S
Circuitry
SPDT
SPDT
SPDT
SPDT
SPDT
SPDT
SPDT
Electrical data and UL codes
5 A res., 3 A ind., (sea level),
5 A res., 2.5 A ind., (50,000 feet), 28 Vdc. UL rating: 5 A, 250 Vac
UL rating: 5 A, 125 or 250 Vac
UL rating: 11 A and 1/4 hp, 125 or 250 Vac
1 A res., 0.5 A ind., 30 Vdc. UL rating: 1 A, 125 Vac
1 A res., 30 Vdc. UL rating: .1 A, 125 Vac
5 A res., 3 A ind., 2.4 A lamp load (sea level),
5 A res., 2.5 A ind., 2.4 A lamp load, (50,000 feet), 28 Vdc.
5 A res., 5 A ind., 1.5 A lamp load, 115 Vac. 60 Hz (sea level)
UL rating: 4 A, 250 Vac
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