MICRO SWITCH Premium Subminiature Basic Switches
SM Series
004959
Issue 3
Datasheet
FEATURES
• Industry-leading mechanical life of up to 10,000,000
operations
• Selection of actuation, electrical termination, and operating
characteristics along with high-temperature construction
options
• Wide temperature range of -54°C to 204°C [-65°F to 400°F]
• MIL-PRF-8805 qualified listings in a lightweight, small
package
• FAA-PMA approvals for commercial aircraft
• Choice of silver or gold-plated, or gold bifurcated contacts to
handle a variety of electrical load requirements
• UL/CSA, cUL, ENEC, and CE approvals
DESCRIPTION
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).
DIFFERENTIATION
• Very wide temperature range allows for years of reliable
performance in the harshest of conditions
• MIL-PRF-8805 qualified 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
Sensing and Internet of Things
VALUE TO CUSTOMERS
• Industry-leading life cycle rating reduces the need to
replace switches over life in an OEM platform – reducing
total system cost
• Low operating forces
• Mil-qualified listings
• Life of up to 10,000,000 cycles
POTENTIAL APPLICATIONS
• Precision switch assemblies for commercial aircraft to
monitor doors for “closed” and “locked” position
• Landing gear monitor
• Precision switch assemblies for commercial cockpit
applications for pushbuttons, toggle, or joystick assemblies
• Precision switch assemblies in military applications
• Assemblies for industrial pressure switches and temperature
switches
• Power generation fuel level (gas and oil)
PORTFOLIO
The SM Series of premium subminiature basic switches are
a part of a strong offering of submins including SX Series
(premium) and ZM, ZM1, ZD, ZX, and ZW Series (standard)
switches.
MICRO SWITCH Premium Subminiature Basic Switches, SM Series
Table 1. Specifications
Characteristic
Parameter
Differentiator
low operating force to 2 oz. max; power load switching capability to 11 A; motor load handling capacity to 1/4
HP (Vac)
Ampere rating
0.1 A to 11 A
Circuitry
SPDT
Operating force
0.04 oz to 2 oz
Termination
quick connect, solder, pcb
Actuator
pin plunger, straight lever, roller lever, simulated roller lever, paddle lever
Voltage
115 Vac, 125 Vac, 250 Vac, 30 Vdc
Agency approvals
UL, CE, CSA, ENEC, MIL-PRF-8805, FAA-PMA
Agency file information
CE: 61058-1; UL: E12252; CSA: LR41372
Operating temperature
-54°C to 121°C [-65°F to 250°F]; select catalog listings 204°C [400°F]
Contacts
silver, gold plated, bifurcated gold
Housing
phenolic
Sealing
sealed plunger on 411SM Series, other SM Series not weather sealed
Mechanical life
up to 10,000,000 operations for 11SM listings
up to 80,000 operations for 1SM/41SM listings
up to 1,000,000 operations for gold bifurcated contact
Size
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
Circuitry
J
SPDT
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
K
SPDT
UL rating: 5 A, 125 or 250 Vac
M
SPDT
UL rating: 11 A and 1/4 hp, 125 or 250 Vac
N
SPDT
1 A res., 0.5 A ind., 30 Vdc. UL rating: 1 A, 125 Vac
P
SPDT
1 A res., 30 Vdc. UL rating: .1 A, 125 Vac
R
SPDT
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)
S
SPDT
UL rating: 4 A, 250 Vac
2 sensing.honeywell.com
Electrical data and UL codes
MICRO SWITCH Premium Subminiature Basic Switches, SM Series
O.F. • Operating force
R.F. • Release force
P.T. • Pretravel
O.T. • Overtravel
D.T. • Differential travel
O.P. • Operating position
Electrical
Data and UL
Codes
Table 3. MICRO SWITCH SM Series Order Guide • Pin Plunger
O.F.
N [oz]
11SM1077-T
Gold-plated contacts
0.1 A
P
0,83 to 1,39
[3 to 5]
0,28 [1]
0,51
[0.020]
0,13
[0.005]
0,1 [0.004]
8,38
[0.330]
12SM604-T
Bifurcated gold contacts,
reduced rating
0.1 A
P
0,83 to 1,39
[3 to 5]
0,28 [1]
0,51
[0.020]
0,076
[0.003]
0,1 [0.004]
8,38
[0.330]
11SM23-T
Gold-plated contacts
1A
N
0,83 to 1,39
[3 to 5]
0,28 [1]
0,51
[0.020]
0,13
[0.005]
0,1 [0.004]
8,38
[0.330]
12SM4-T
Enhanced reliability
(bifurcated gold contacts)
1A
N
0,83 to 1,39
[3 to 5]
0,28 [1]
0,51
[0.020]
0,076
[0.003]
0,1 [0.004]
8,38
[0.330]
11SM701-T
Lower force
4A
S
0,56 [2]
0,14 [0.5]
0,51
[0.020]
0,13
[0.005]
0,051
[0.002]
8,38
[0.330]
11SM1-T
General purpose
5A
J
0,83 to 1,39
[3 to 5]
0,28 [1]
0,51
[0.020]
0,13
[0.005]
0,1 [0.004]
8,38
[0.330]
11SM3-T
Operating temps to 121°C
[250°F]
5A
J
0,83 to 1,39
[3 to 5]
0,28 [1]
0,51
[0.020]
0,13
[0.005]
0,1 [0.004]
8,38
[0.330]
11SM244-T
Operating temps to 204°C
[400°F] for 100 hours
5A
0,83 to 1,39
[3 to 5]
0,28 [1]
0,51
[0.020]
0,13
[0.005]
0,1 [0.004]
8,38
[0.330]
11SM401-T
Less differential travel
5A
K
0,97 [3.5]
max.
0,28 [1]
0,51
[0.020]
0,13
[0.005]
0,025
[0.001]
8,38
[0.330]
21SM284-T2
(MS25085-2)
MIL-PRF-8805
applications
5A
R
0,83 to 1,39
[3 to 5]
0,28 [1]
0,76
[0.030]
0,13
[0.005]
0,1 [0.004]
8,38
[0.330]
21SM284
(MS25085-1)
MIL-PRF-8805
applications, solder
terminals
5A
R
0,83 to 1,39
[3 to 5]
0,28 [1]
0,76
[0.030]
0,13
[0.005]
0,1 [0.004]
8,38
[0.330]
22SM1-T
Enhanced stability under
varying humidity
5A
J
0,83 to 1,39
[3 to 5]
0,28 [1]
0,51
[0.020]
0,13
[0.005]
0,1 [0.004]
8,38
[0.330]
41SM1-T
Up to 11 A, 1/4 HP (ac)
11 A
M
0,83 to 1,39
[3 to 5]
0,28 [1]
0,76
[0.030]
0,13
[0.005]
0,1 [0.004]
8,38
[0.330]
411SM1
Sealed plunger construction
5A
K
0,83 to 2,09
[3 to 7.5]
0,28 [1]
0,51
[0.020]
0,13
[0.005]
0,1 [0.004]
8,38
[0.330]
411SM23
Sealed plunger construction, gold contacts
1A
N
0,83 to 2,09
[3 to 7.5]
0,28 [1]
0,51
[0.020]
0,13
[0.005]
0,1 [0.004]
8,38
[0.330]
Catalog
Listing
Recommended For
R.F. min.
N [ oz]
P.T. max.
mm [in]
O.T. min.
mm [in]
D.T.
mm [in]
O.P. *
mm [in]
* except where stated ±0,38 mm [±0.015 in]
Sensing and Internet of Things
3
MICRO SWITCH Premium Subminiature Basic Switches, SM Series
O.F. • Operating force
R.F. • Release force
P.T. • Pretravel
O.T. • Overtravel
D.T. • Differential travel
O.P. • Operating position
Electrical
Data and
UL Codes
Table 4. MICRO SWITCH SM Series Order Guide • Integral Lever
O.F.
N [oz]
311SM1-T
7,24 mm [0.285 in] straight
lever
5A
J
0,39
[1.4]
0,07
[0.25]
2,16
[0.085]
0,51
[0.020]
0,48
[0.019]
8,64 mm ±1,5 mm
[0.34 in ±0.060 in]
311SM23-T
7,24 mm [0.285 in] straight
lever, gold contacts
1A
N
0,39
[1.4]
0,07
[0.25]
2,16
[0.085]
0,51
[0.020]
0,48
[0.019]
8,64 mm ±1,5 mm
[0.34 in ±0.060 in]
311SM701-T
7,24 mm [0.285 in] straight
lever, lower force
4A
S
0,16
[0.57]
0,03
[0.11]
2,16
[0.085]
0,51
[0.020]
0,36
[0.014]
8,64 mm ±1,5 mm
[0.34 in ±0.060 in]
311SM2-T
14,35 mm [0.565 in] straight
lever
5A
J
0,31
[1.1]
0,05
[0.18]
3,05
[0.12]
0,66
[0.026]
0,69
[0.027]
8,51 mm ±2 mm
[0.335 in ±0.08 in]
311SM43-T
14,35 mm [0.565 in] straight
lever, gold contacts
1A
N
0,31
[1.1]
0,05
[0.18]
3,05
[0.12]
0,66
[0.026]
0,69
[0.027]
8,51 mm ±2 mm
[0.335 in ±0.08 in]
311SM702-T
14,35 mm [0.565 in] straight
lever, lower force
4A
S
0,11
[0.4]
0,02
[0.07]
3,05
[0.12]
0,66
[0.026]
0,38
[0.015]
8,51 mm ±2 mm
[0.335 in ±0.08 in]
311SM3-T
44,8 mm [1.765 in] straight
lever
5A
J
0,15
[0.53]
0,02
[0.07]
7,87
[0.31]
1,45
[0.057]
2,8
[0.11]
7,11 mm ±4,3 mm
[0.28 in ±0.17 in]
311SM17-H58
44,8 mm [1.765 in] straight
lever, gold contacts
1A
N
0,15
[0.53]
0,02
[0.07]
7,87
[0.31]
1,45
[0.057]
2,8
[0.11]
7,11 mm ±4,3 mm
[0.28 in ±0.17 in]
311SM703-T
44,8 mm [1.765 in] straight
lever, lower force
4A
S
0,06
[0.2]
0,01
[0.04]
7,87
[0.31]
1,45
[0.057]
1,78
[0.07]
7,11 mm ±4,3 mm
[0.28 in ±0.17 in]
311SM4-T
6,38 mm [0.251 in] simulated roller lever
5A
J
0,39
[1.4]
0,07
[0.25]
2,16
[0.085]
0,46
[0.018]
0,48
[0.019]
11,7 mm ±1,5 mm
[0.46 in ±0.06 in]
311SM25-T
6,38 mm [0.251 in] simu- lated
roller lever, gold contacts
1A
N
0,39
[1.4]
0,07
[0.25]
2,16
[0.085]
0,46
[0.018]
0,48
[0.019]
11,7 mm ±1,5 mm
[0.46 in ±0.06 in]
311SM704-T
6,38 mm [0.251 in] simulated roller lever, lower force
4A
S
0,16
[0.57]
0,03
[0.11]
2,16
[0.085]
0,46
[0.018]
0,33
[0.013]
11,7 mm ±1,5 mm
[0.46 in ±0.06 in]
311SM5-T
13,6 mm [0.535 in] simulated roller lever
5A
J
0,31
[1.1]
0,05
[0.18]
3,05
[0.12]
0,66
[0.026]
0,69
[0.027]
11,56 mm ±2 mm
[0.455 in ±0.08 in]
311SM705-T
13,6 mm [0.535 in] simulated roller lever, lower force
4A
S
0,11
[0.4]
0,02
[0.07]
3,05
[0.12]
0,66
[0.026]
0,38
[0.015]
11,56 mm ±2 mm
[0.455 in ±0.08 in]
311SM6-T
6,38 mm [0.251 in] roller
lever
5A
J
0,39
[1.4]
0,07
[0.25]
2,16
[0.085]
0,46
[0.018]
0,48
[0.019]
14,2 mm ±1,5 mm
[0.56 in ±0.06 in]
311SM68-T
6,38 mm [0.251 in] roller
lever, gold contacts
1A
N
0,39
[1.4]
0,07
[0.25]
2,16
[0.085]
0,46
[0.018]
0,48
[0.019]
14,2 mm ±1,5 mm
[0.56 in ±0.06 in]
311SM706-T
6,38 mm [0.251 in] roller
lever, lower force
4A
S
0,16
[0.57]
0,03
[0.11]
2,16
[0.085]
0,46
[0.018]
0,33
[0.013]
14,2 mm ±1,5 mm
[0.56 in ±0.06 in]
311SM7-T
13,6 mm [0.535 in] roller
lever
5A
J
0,31
[1.1]
0,05
[0.18]
3,05
[0.12]
0,66
[0.026]
0,69
[0.027]
14,1 mm ±2 mm
[0.555 in ±0.08 in]
111SM1-T
Leaf actuator
5A
J
1,95
[7]
0,56
[2]
5,54
[0.218]
0,76
[0.03]
0,76
[0.03]
8,89 mm ±0,76 mm
[0.35 in ±0.03 in]
111SM17-T
Leaf actuator gold contacts
1A
N
1,95
[7]
0,56
[2]
5,54
[0.218]
0,76
[0.03]
0,76
[0.03]
8,89 mm ±0,76 mm
[0.35 in ±0.03 in]
111SM2-T
Flexible leaf with roller
5A
J
1,95
[7]
0,56
[2]
5,56
[0.219]
0,76
[0.03]
0,64
[0.025]
14,3 mm ±0,76 mm
[0.562 in ±0.03 in]
111SM23-T
Flexible leaf with roller, gold
contacts
1A
N
1,95
[7]
0,56
[2]
5,56
[0.219]
0,76
[0.03]
0,64
[0.025]
14,3 mm ±0,76 mm
[0.562 in ±0.03 in]
Catalog
Listing
4 sensing.honeywell.com
Recommended For
R.F.
min.
N [ oz]
P.T. max.
mm [in]
O.T. min.
mm [in]
D.T.
mm [in]
O.P. *
mm [in]
MICRO SWITCH Premium Subminiature Basic Switches, SM Series
Table 5. Numeric Designations for MICRO SWITCH SM Series/Order Guide
Prefix
Description
Suffix
Description
1SM
Standard pin plunger construction, up to 80,000
operations
23
Gold contacts
400
Low differential travel series
11SM
Long-life pin plunger construction, up to
10,000,000 operations
500
Reverse terminal designation
12SM
Gold bifurcated contacts
700
Low force series
21SM
Same as 1SM (formerly had DAP material)
1000
Gold alloy
22SM
Same as 11SM (formerly had DAP material)
23SM
Same as 12SM (formerly had DAP material)
41SM
11 A construction (11SM construction)
101SM
1SM with an integral leaf actuator
111SM
11SM with an integral spring leaf
112SM
12SM with an integral spring leaf
122SM
22SM with an integral spring leaf
151SM
51SM with an integral spring leaf
301SM
1SM with an integral rigid lever
302SM
1SM with an integral roller lever
311SM
Integral rigid lever
321SM
21SM with an integral rigid lever
322SM
22SM with an integral rigid lever
401SM
Dust/splash resistant 1SM
411SM
Dust/splash resistant 11SM
412SM
Dust/splash resistant 12SM
Sensing and Internet of Things
5
MICRO SWITCH Premium Subminiature Basic Switches, SM Series
Table 6. SM Series • Standard Actuator Options, Screw Terminals, and Dimensions (mm/in)
Pin plunger, T terminals
Pin plunger, Solder terminals
Integral leaf lever
Integral roller lever
Integral levers
NOTE: The two mounting holes accept pins or screws of 2,21 mm (0.087 in) maximum diameter
MICRO SWITCH SM SERIES AVAILABLE TERMINALS
Mounting torque:
0,26 Nm [2.3 in-lb] max.
6 sensing.honeywell.com
MICRO SWITCH Premium Subminiature Basic Switches, SM Series
Actuator
Length
Operting
Force
max.
Release
Force min.
Pretravel
max.
Overtravel
min.
Differential
Travel max.
Operating
Point
Free
Position
max.
Straight leaf
16,8 mm
[0.66 in]
2,78 N
[10 oz]
0,56 N
[2 oz]
1,98 mm
[0.078 in]
0,38 mm
[0.015 in]
0,38 mm
[0.015 in]
8,89 mm
±0,38 mm
[0.350 in
±0.015 in]
11,3 mm
[0.445 in]
JS-5
Roller leaf
(bronze
roller)
15 mm
[0.59 in]
2,78 N
[10 oz]
0,83 N
[3 oz]
1,98 mm
[0.078 in]
0,38 mm
[0.015 in]
0,38 mm
[0.015 in]
14,2 mm
±0,38 mm
[0.580 in
±0.015 in
16,9 mm
[0.665 in]
Formed leaf
(simulated
roller)
14,7 mm
[0.58 in]
2,78 N
[10 oz]
0,56 N
[2 oz]
2,39 mm
[0.094 in]
0,79 mm
[0.031 in]
0,38 mm
[0.015 in]
9,65 mm
±0,38 mm
[0.380 in
±0.015 in]
12,7 mm
[0.475 in]
Straight lever
26,2 mm
[1.03 in]*
0,28 N
[1 oz]
0,04 N
[0.14 oz]
3,18 mm
[0.125 in]
approx.
0,76 mm
[0.030 in]
0,76 mm
[0.030 in]
10,3 mm
[0.406 in]
approx.
–
Roller lever
(steel roller)
25,4 mm
[1.00 in]*
0,28 N
[1 oz]
0,04 N
[0.14 oz]
3,18 mm
[0.125 in]
approx.
0,76 mm
[0.030 in]
0,76 mm
[0.030 in]
14,3 mm
[0.562 in]
approx.
–
Formed lever
(simulated
roller)
25,4 mm
[1.00 in]*
0,28 N
[1 oz]
0,04 N
[0.14 oz]
3,18 mm
[0.125 in]
approx.
0,76 mm
[0.030 in]
0,76 mm
[0.030 in]
11,6 mm
[0.455 in]
approx.
–
Tandem leaf
5,3 mm
[0.21 in]
5,00 N
[18 oz]
2,78 N
[10 oz]
2,36 mm
[0.093 in]
0,15 mm
[0.006 in]
0,38 mm
[0.015 in]
8,89 mm
±0,38 mm
[0.350 in
±0.015 in]
10,5 mm
[0.415 in]
Tandem
leaf (bronze
roller)
4,3 mm
[0.17 in]
11,1 N
[40 oz]
4,45 N
[16 oz]
2,36 mm
[0.093 in]
0,13 mm
[0.005 in]
0,38 mm
[0.015 in]
14,5 mm
±0,38 mm
[0.570 in
±0.015 in]
16,1 mm
[0.635 in]
JS-31** D
JS-33** D
JS-221
JS-246
JS-220
JS-2
Description
JS-7
MICRO SWITCH JS SERIES AUXILIARY ACTUATORS FOR THE MICRO SWITCH SM SERIES SWITCHES (stainless steel actuator and hardware)
** Travel characteristics on tandem actuators
vary with actual basic switch characteristics
NOTE: Above actuators should be used
below 300°F
* “A” measurement is from pivot point of
lever to the point indicated on drawing
D Plated steel machine screws
Sensing and Internet of Things
7
m WARNING
ADDITIONAL MATERIALS
The following associated literature is available at
sensing.honeywell.com:
• Product installation instructions
• Product range guide
PERSONAL INJURY
DO NOT USE these products as safety or emergency stop
devices or in any other application where failure of the
product could result in personal injury.
Failure to comply with these instructions could result in
death or serious injury.
• Aerospace range guide
• Applying basic switches
m WARNING
• Low energy switching guide
• Product application-specific information
MISUSE OF DOCUMENTATION
– Application Note: Central Vacuum System
•
– Application Note: Electronic Taping Machine
– Application Note: Sensors and Switches in Sanitary Valves
– Application Note: Sensors and Switches in Oil Rig
Applications
– Application Note: Sensors and Switches for Potential
Medical Applications
•
The information presented in this product sheet is for
reference only. Do not use this document as a product
installation guide.
Complete installation, operation, and maintenance
information is provided in the instructions supplied with
each product.
Failure to comply with these instructions could result in
death or serious injury.
Warranty/Remedy
Find out more
Honeywell serves its customers
through a worldwide network of
sales offices and distributors.
For application assistance, current specifications, pricing or
name of the nearest Authorized
Distributor, contact your local
sales office.
To learn more about Honeywell’s sensing and switching
products,
call +1-815-235-6847 or
Honeywell warrants goods of its manufacture as being free of
defective materials and faulty workmanship during the applicable warranty period. Honeywell’s standard product warranty
applies unless agreed to otherwise by Honeywell in writing;
please refer to your order acknowledgement or consult your
local sales office for specific warranty details. If warranted
goods are returned to Honeywell during the period of coverage,
Honeywell will repair or replace, at its option, without charge
those items that Honeywell, in its sole discretion, finds defective. The foregoing is buyer’s sole remedy and is in lieu of all
other warranties, expressed or implied, including those of
merchantability and fitness for a particular purpose. In no
event shall Honeywell be liable for consequential, special,
or indirect damages.
While Honeywell may provide application assistance personally,
through our literature and the Honeywell web site, it is buyer’s
sole responsibility to determine the suitability of the product in
the application.
Specifications may change without notice. The information we
supply is believed to be accurate and reliable as of this writing.
However, Honeywell assumes no responsibility for its use.
1-800-537-6945,
visit sensing.honeywell.com,
or e-mail inquiries to
info.sc@honeywell.com
Honeywell Sensing and Internet of Things
9680 Old Bailes Road
Fort Mill, SC 29707
honeywell.com
004959-3-EN IL50 GLO
December 2016
© 2016 Honeywell International Inc. All rights reserved.