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Subminiature Basic Switches

SM Series

Up to 5 A ac & dc (UL, CSA, CE, ENEC). Variety of actuators, terminations & contacts. 9,5 mm centers side mount. MIL-PRF-8805 listings

Distributor Inventory

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).

Pressure Ranges
  • 0 inH20 to 4 inH20

Others

  • Ampere Rating
    • 5A
    • 1A
    • 4A
    • 11A
    • 0.1 A
  • Circuitry
    • SPDT
  • Actuator
    • Roller Lever
    • Simulated Roller Lever
    • Straight Lever
    • Pin Plunger
    • Paddle Lever
  • Switch Type
    • MICRO SWITCH Subminiature 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]
  • Termination
    • Screw
    • PCB Terminals
    • PCB Solder
    • Quick Connect
    • Solder
    • Solder Quick Connect
  • Actuator Length
    • 4,83 mm [0.19 in]
    • 3,05 mm [0.12 in]
  • Mounting Centers
    • 9,65 mm [0.38 in]
    • 4,83 mm [0.19 in]
  • Release Force
    • 0,07 N [0.25 oz] min.
    • 0,05 N [0.18 oz] min.
    • 0,14 N [0.494 oz] min.
    • 0,28 N [1.0 oz] min.
    • 0,02 N [0.07 oz] min.
    • 0,01 N [0.035 oz] min.
    • 0,56 N [2.0 oz] min.
    • 0,31 N [1.1 oz] min.
  • Housing Material
    • General Purpose Phenolic
    • High Temperature Phenolic
  • Contact Type
    • Silver
    • Gold-Plated Silver
    • Gold
  • Overtravel (OT)
    • 0,33 mm [0.013 in] min.
    • 0,51 mm [0.020 in] min.
    • 0,13 mm [0.005 in] min.
    • 0,076 mm [0.003 in] min.
    • 0,46 mm [0.018 in] min.
    • 0,25 mm [0.010 in] min.
    • 0,66 mm [0.026 in] min.
    • 1,45 mm [0.057 in] min.
    • 0,76 mm [0.030 in] min.
    • 0,97 mm [0.038 in] min.
    • 0,64 mm [0.025 in] min.
  • Package Height
    • 12,4 mm [0.49 in]
  • Voltage
    • 125 Vac/30 Vdc
    • 115 Vac
    • 125 Vac
    • 250 Vac
    • 30 Vdc
  • Differential Travel (DT)
    • 0,76 mm [0.030 in] max.
    • 0,08 mm [0.003 in] max.
    • 1,78 mm [0.070 in] max.
  • Agency Approvals and Standards
    • UL, CE, CSA, ENEC
    • UL, CSA, ENEC
    • UL, CE, ENEC
  • Operating Temperature
    • -53 °C to 204 °C [-65 °F to 400 °F]
    • -55 °C to 125 °C [-67 °F to 257 °F]
    • -53 °C to 121 °C [-65 °F to 250 °F]
    • -40 °C to 121 °C [-40 °F to 250 °F]
    • -53 °C to 163 °C [-65 °F to 325 °F]
  • Pretravel (PT)
    • 0,5 mm [0.020 in] max.
    • 3,05 mm [0.120 in] max.
    • 3,8 mm [0.150 in] max.
    • 7,87 mm [0.310 in] max.
    • 2,16 mm [0.085 in] max.
    • 5,56 mm [0.219 in] max.
    • 5,54 mm [0.218 in] max.
    • 0,76 mm [0.030 in] max.
    • 3,32 mm [0.117 in] max.
  • Sealed
    • No
    • Yes
  • Mounting Screw Size
    • 22,1 mm [0.087 in]
  • Operating Force (OF)
    • 0,31 N [1.1 oz] max.
    • 2,55 N [9.0 oz] max.
    • 0,16 N [0.60 oz] max.
    • 0,15 N [0.53 oz] max.
    • 1,95 N [7.0 oz] max.
    • 1,13 N [4.0 oz] max.
    • 0,56 N to 1,98 N [2.0 oz to 7.0 oz] max.
    • 0,11 N [0.4 oz] max.
    • 0,06 N [0.19 oz] max.
    • 0,97 N [3.5 oz] max.
    • 0,39 N [1.4 oz] max.
    • 0,83 N to 1,39 N [3.0 oz to 5.0 oz]
    • 3,40 N [12.0 oz] max.
    • 2,27 N [8.0 oz] max.
    • 3,97 N [14.0 oz] max.
    • 0,56 N [2.0 oz] max.
    • 0,83 N [3.0 oz] max.
    • 0,83 N to 2,09 N [3.0 oz to 7.5 oz]
    • 0,12 N [0.42 oz] max.
  • Package Length
    • 19,8 mm [0.78 in]
  • Weight
    • 2,99 g [0.008 lb]
    • 3,63 g [0.008 lb]
    • 2,72 g [0.006 lb]
  • High Temperature
    • 204°C [400°F]
    • 125°C [257°F]
  • Tightening Torque
    • 0,26 N m [2.3 in lb]
    • 0,22 N m [2.0 in lb]
  • Operating Position (OP)
    • 11,7 mm ±1,5 mm [0.460 in ±0.060 in]
    • 14,2 mm ±1,5 mm [0.560 in ±0.060 in]
    • 7,11 mm ± 4,3 mm [0.280 in ± 0.170 in]
    • 8,51 mm ± 2 mm [0.335 in ± 0.080 in]
    • 8,64 mm ± 1,5 mm [0.340 in ±0.060 in]
    • 8,38 mm ±0,38 mm [0.330 in ±0.015 in]
    • 8,89 mm ±0,76 mm [0.350 in ±0.030 in]
    • 13,0 mm ±1,93 mm [0.512 in ±0.076 in]
    • 14,2 mm ±0,76 mm [0.562 in ±0.030 in]
    • 11,55 mm ±2 mm [0.455 in ±0.080 in]
    • 14,2 mm ±0,25 mm [0.560 in ±0.010 in]
  • Series Name
    • SM
  • Package Width
    • 6,35 mm [0.25 in]
  • Recommended For
    • 14,35 mm [0.565 in] straight lever with gold contacts
    • 14,35 mm [0.565 in] straight lever
    • Flexible leaf with roller
    • Force and stability of flexible leaf actuator
    • Lower force
    • Operating in temperatures to 204 °C [400 °F] for 100 hours
    • MIL-PRF-8805 application requirements, solder terminals
    • Most applications
    • 44,8 mm [1.765 in] straight lever
    • Operating in temperatures to 121 °C [250 °F]
    • Application requiring gold contacts
    • Less differential travel
    • 6,38 mm [0.251 in] simulated roller lever
    • 13,6 mm [0.251 in] roller lever with gold contacts
    • 7,24 mm [0.285 in] straight lever

Others

  • Ampere Rating
    • 5A
    • 1A
    • 4A
    • 11A
    • 0.1 A
  • Circuitry
    • SPDT
  • Actuator
    • Roller Lever
    • Simulated Roller Lever
    • Straight Lever
    • Pin Plunger
    • Paddle Lever
  • Switch Type
    • MICRO SWITCH Subminiature 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]
  • Termination
    • Screw
    • PCB Terminals
    • PCB Solder
    • Quick Connect
    • Solder
    • Solder Quick Connect
  • Actuator Length
    • 4,83 mm [0.19 in]
    • 3,05 mm [0.12 in]
  • Mounting Centers
    • 9,65 mm [0.38 in]
    • 4,83 mm [0.19 in]
  • Release Force
    • 0,07 N [0.25 oz] min.
    • 0,05 N [0.18 oz] min.
    • 0,14 N [0.494 oz] min.
    • 0,28 N [1.0 oz] min.
    • 0,02 N [0.07 oz] min.
    • 0,01 N [0.035 oz] min.
    • 0,56 N [2.0 oz] min.
    • 0,31 N [1.1 oz] min.
  • Housing Material
    • General Purpose Phenolic
    • High Temperature Phenolic
  • Contact Type
    • Silver
    • Gold-Plated Silver
    • Gold
  • Overtravel (OT)
    • 0,33 mm [0.013 in] min.
    • 0,51 mm [0.020 in] min.
    • 0,13 mm [0.005 in] min.
    • 0,076 mm [0.003 in] min.
    • 0,46 mm [0.018 in] min.
    • 0,25 mm [0.010 in] min.
    • 0,66 mm [0.026 in] min.
    • 1,45 mm [0.057 in] min.
    • 0,76 mm [0.030 in] min.
    • 0,97 mm [0.038 in] min.
    • 0,64 mm [0.025 in] min.
  • Package Height
    • 12,4 mm [0.49 in]
  • Voltage
    • 125 Vac/30 Vdc
    • 115 Vac
    • 125 Vac
    • 250 Vac
    • 30 Vdc
  • Differential Travel (DT)
    • 0,76 mm [0.030 in] max.
    • 0,08 mm [0.003 in] max.
    • 1,78 mm [0.070 in] max.
  • Agency Approvals and Standards
    • UL, CE, CSA, ENEC
    • UL, CSA, ENEC
    • UL, CE, ENEC
  • Operating Temperature
    • -53 °C to 204 °C [-65 °F to 400 °F]
    • -55 °C to 125 °C [-67 °F to 257 °F]
    • -53 °C to 121 °C [-65 °F to 250 °F]
    • -40 °C to 121 °C [-40 °F to 250 °F]
    • -53 °C to 163 °C [-65 °F to 325 °F]
  • Pretravel (PT)
    • 0,5 mm [0.020 in] max.
    • 3,05 mm [0.120 in] max.
    • 3,8 mm [0.150 in] max.
    • 7,87 mm [0.310 in] max.
    • 2,16 mm [0.085 in] max.
    • 5,56 mm [0.219 in] max.
    • 5,54 mm [0.218 in] max.
    • 0,76 mm [0.030 in] max.
    • 3,32 mm [0.117 in] max.
  • Sealed
    • No
    • Yes
  • Mounting Screw Size
    • 22,1 mm [0.087 in]
  • Operating Force (OF)
    • 0,31 N [1.1 oz] max.
    • 2,55 N [9.0 oz] max.
    • 0,16 N [0.60 oz] max.
    • 0,15 N [0.53 oz] max.
    • 1,95 N [7.0 oz] max.
    • 1,13 N [4.0 oz] max.
    • 0,56 N to 1,98 N [2.0 oz to 7.0 oz] max.
    • 0,11 N [0.4 oz] max.
    • 0,06 N [0.19 oz] max.
    • 0,97 N [3.5 oz] max.
    • 0,39 N [1.4 oz] max.
    • 0,83 N to 1,39 N [3.0 oz to 5.0 oz]
    • 3,40 N [12.0 oz] max.
    • 2,27 N [8.0 oz] max.
    • 3,97 N [14.0 oz] max.
    • 0,56 N [2.0 oz] max.
    • 0,83 N [3.0 oz] max.
    • 0,83 N to 2,09 N [3.0 oz to 7.5 oz]
    • 0,12 N [0.42 oz] max.
  • Package Length
    • 19,8 mm [0.78 in]
  • Weight
    • 2,99 g [0.008 lb]
    • 3,63 g [0.008 lb]
    • 2,72 g [0.006 lb]
  • High Temperature
    • 204°C [400°F]
    • 125°C [257°F]
  • Tightening Torque
    • 0,26 N m [2.3 in lb]
    • 0,22 N m [2.0 in lb]
  • Operating Position (OP)
    • 11,7 mm ±1,5 mm [0.460 in ±0.060 in]
    • 14,2 mm ±1,5 mm [0.560 in ±0.060 in]
    • 7,11 mm ± 4,3 mm [0.280 in ± 0.170 in]
    • 8,51 mm ± 2 mm [0.335 in ± 0.080 in]
    • 8,64 mm ± 1,5 mm [0.340 in ±0.060 in]
    • 8,38 mm ±0,38 mm [0.330 in ±0.015 in]
    • 8,89 mm ±0,76 mm [0.350 in ±0.030 in]
    • 13,0 mm ±1,93 mm [0.512 in ±0.076 in]
    • 14,2 mm ±0,76 mm [0.562 in ±0.030 in]
    • 11,55 mm ±2 mm [0.455 in ±0.080 in]
    • 14,2 mm ±0,25 mm [0.560 in ±0.010 in]
  • Series Name
    • SM
  • Package Width
    • 6,35 mm [0.25 in]
  • Recommended For
    • 14,35 mm [0.565 in] straight lever with gold contacts
    • 14,35 mm [0.565 in] straight lever
    • Flexible leaf with roller
    • Force and stability of flexible leaf actuator
    • Lower force
    • Operating in temperatures to 204 °C [400 °F] for 100 hours
    • MIL-PRF-8805 application requirements, solder terminals
    • Most applications
    • 44,8 mm [1.765 in] straight lever
    • Operating in temperatures to 121 °C [250 °F]
    • Application requiring gold contacts
    • Less differential travel
    • 6,38 mm [0.251 in] simulated roller lever
    • 13,6 mm [0.251 in] roller lever with gold contacts
    • 7,24 mm [0.285 in] straight lever
  • Release Force : 0,07 N [0.25 oz] min.|0,05 N [0.18 oz] min.|0,14 N [0.494 oz] min.|0,28 N [1.0 oz] min.|0,02 N [0.07 oz] min.|0,01 N [0.035 oz] min.|0,56 N [2.0 oz] min.|0,31 N [1.1 oz] min.
  • Housing Material : General Purpose Phenolic|High Temperature Phenolic
  • Contact Type : Silver|Gold-Plated Silver|Gold
  • Actuator Length : 4,83 mm [0.19 in]|3,05 mm [0.12 in]
  • Circuitry : SPDT
  • Overtravel (OT) : 0,33 mm [0.013 in] min.|0,51 mm [0.020 in] min.|0,13 mm [0.005 in] min.|0,076 mm [0.003 in] min.|0,46 mm [0.018 in] min.|0,25 mm [0.010 in] min.|0,66 mm [0.026 in] min.|1,45 mm [0.057 in] min.|0,76 mm [0.030 in] min.|0,97 mm [0.038 in] min.|0,64 mm [0.025 in] min.
  • Mounting Centers : 9,65 mm [0.38 in]|4,83 mm [0.19 in]
  • Package Height : 12,4 mm [0.49 in]
  • Voltage : 125 Vac/30 Vdc|115 Vac|125 Vac|250 Vac|30 Vdc
  • Differential Travel (DT) : 0,76 mm [0.030 in] max.|0,08 mm [0.003 in] max.|1,78 mm [0.070 in] max.
  • Agency Approvals and Standards : UL, CE, CSA, ENEC|UL, CSA, ENEC|UL, CE, ENEC
  • Actuator : Roller Lever|Simulated Roller Lever|Straight Lever|Pin Plunger|Paddle Lever
  • Operating Temperature : -53 °C to 204 °C [-65 °F to 400 °F]|-55 °C to 125 °C [-67 °F to 257 °F]|-53 °C to 121 °C [-65 °F to 250 °F]|-40 °C to 121 °C [-40 °F to 250 °F]|-53 °C to 163 °C [-65 °F to 325 °F]
  • Pretravel (PT) : 0,5 mm [0.020 in] max.|3,05 mm [0.120 in] max.|3,8 mm [0.150 in] max.|7,87 mm [0.310 in] max.|2,16 mm [0.085 in] max.|5,56 mm [0.219 in] max.|5,54 mm [0.218 in] max.|0,76 mm [0.030 in] max.|3,32 mm [0.117 in] max.
  • Sealed : No|Yes
  • Switch Type : MICRO SWITCH Subminiature 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]
  • Mounting Screw Size : 22,1 mm [0.087 in]
  • Operating Force (OF) : 0,31 N [1.1 oz] max.|2,55 N [9.0 oz] max.|0,16 N [0.60 oz] max.|0,15 N [0.53 oz] max.|1,95 N [7.0 oz] max.|1,13 N [4.0 oz] max.|0,56 N to 1,98 N [2.0 oz to 7.0 oz] max.|0,11 N [0.4 oz] max.|0,06 N [0.19 oz] max.|0,97 N [3.5 oz] max.|0,39 N [1.4 oz] max.|0,83 N to 1,39 N [3.0 oz to 5.0 oz]|3,40 N [12.0 oz] max.|2,27 N [8.0 oz] max.|3,97 N [14.0 oz] max.|0,56 N [2.0 oz] max.|0,83 N [3.0 oz] max.|0,83 N to 2,09 N [3.0 oz to 7.5 oz]|0,12 N [0.42 oz] max.
  • Termination : Screw|PCB Terminals|PCB Solder|Quick Connect|Solder|Solder Quick Connect
  • Ampere Rating : 5A|1A|4A|11A|0.1 A
  • Package Length : 19,8 mm [0.78 in]
  • Weight : 2,99 g [0.008 lb]|3,63 g [0.008 lb]|2,72 g [0.006 lb]
  • High Temperature : 204°C [400°F]|125°C [257°F]
  • Tightening Torque : 0,26 N m [2.3 in lb]|0,22 N m [2.0 in lb]
  • Operating Position (OP) : 11,7 mm ±1,5 mm [0.460 in ±0.060 in]|14,2 mm ±1,5 mm [0.560 in ±0.060 in]|7,11 mm ± 4,3 mm [0.280 in ± 0.170 in]|8,51 mm ± 2 mm [0.335 in ± 0.080 in]|8,64 mm ± 1,5 mm [0.340 in ±0.060 in]|8,38 mm ±0,38 mm [0.330 in ±0.015 in]|8,89 mm ±0,76 mm [0.350 in ±0.030 in]|13,0 mm ±1,93 mm [0.512 in ±0.076 in]|14,2 mm ±0,76 mm [0.562 in ±0.030 in]|11,55 mm ±2 mm [0.455 in ±0.080 in]|14,2 mm ±0,25 mm [0.560 in ±0.010 in]
  • Series Name : SM
  • Package Width : 6,35 mm [0.25 in]
  • Recommended For : 14,35 mm [0.565 in] straight lever with gold contacts|14,35 mm [0.565 in] straight lever|Flexible leaf with roller|Force and stability of flexible leaf actuator|Lower force|Operating in temperatures to 204 °C [400 °F] for 100 hours|MIL-PRF-8805 application requirements, solder terminals|Most applications|44,8 mm [1.765 in] straight lever|Operating in temperatures to 121 °C [250 °F]|Application requiring gold contacts|Less differential travel|6,38 mm [0.251 in] simulated roller lever|13,6 mm [0.251 in] roller lever with gold contacts|7,24 mm [0.285 in] straight lever
Data Sheet
Name
Description
File Size
Date
Size
MICRO SWITCH SM Series Premium Subminiature Basic Switch
979.32 KB
7/16/2021
PDF 979.32 KB
Manuals and Guides
Name
Description
File Size
Date
Size
Basic, Toggle, and Rocker Switches Range Guide
6.48 MB
10/1/2021
PDF 6.48 MB
Brochure
Name
Description
File Size
Date
Size
MICRO SWITCH Subminiature Basic Switch Comparison
657.9 KB
8/13/2021
PDF 657.9 KB
Application Note
Name
Description
File Size
Date
Size
Sensors and Switches in Valves and Flowmeters
1.78 MB
7/16/2021
PDF 1.78 MB
Switches and Sensors Solutions for Industrial Applications
2.48 MB
10/21/2021
PDF 2.48 MB
Name
Description
File Size
Date
Size
MICRO SWITCH SM Series Premium Subminiature Basic Switch
979.32 KB
7/16/2021
PDF 979.32 KB
MICRO SWITCH Subminiature Basic Switch Comparison
657.9 KB
8/13/2021
PDF 657.9 KB
Sensors and Switches in Valves and Flowmeters
1.78 MB
7/16/2021
PDF 1.78 MB
Basic, Toggle, and Rocker Switches Range Guide
6.48 MB
10/1/2021
PDF 6.48 MB
Switches and Sensors Solutions for Industrial Applications
2.48 MB
10/21/2021
PDF 2.48 MB
Image
SKU
Description
alt
11SM3-S
MICRO SWITCH SM Series Subminiature Basic Switch, Single Pole Double Throw (SPDT), 250 Vac, 5 A, Pin Plunger Actuator, Screw Termination
alt
11SM1-T
MICRO SWITCH SM Series Subminiature Basic Switch, Single Pole Double Throw (SPDT), 250 Vac, 5 A, Pin Plunger Actuator, Solder Termination
alt
111SM2
MICRO SWITCH SM Series Subminiature Basic Switch, Single Pole Double Throw (SPDT), 125 Vac, 1 A, Roller Lever Actuator, Solder Termination
alt
111SM1-T
MICRO SWITCH SM Series Subminiature Basic Switch, Single Pole Double Throw (SPDT), 250 Vac, 5 A, Straight Lever Actuator, Solder Termination
alt
11SM423-H4
MICRO SWITCH SM Series Subminiature Basic Switch, Single Pole Double Throw (SPDT), 125 Vac, 1 A, Pin Plunger Actuator, Soldered Quick Connect Termination
alt
11SM401-T
MICRO SWITCH SM Series Subminiature Basic Switch, Single Pole Double Throw (SPDT), 250 Vac, 5 A, Pin Plunger Actuator, Solder Termination
alt
311SM43-T
SUBMINIATURE BASIC SWITCH
alt
311SM1-T
MICRO SWITCH SM Series Subminiature Basic Switch, Single Pole Double Throw (SPDT), 250 Vac, 5 A, Straight Lever Actuator, Solder Termination
alt
311SM4-T
MICRO SWITCH SM Series Subminiature Basic Switch, Single Pole Double Throw (SPDT), 250 Vac, 5 A, Simulated Roller Actuator, Solder Termination
alt
11SM401-H58
MICRO SWITCH SM Series Subminiature Basic Switch, Single Pole Double Throw (SPDT), 250 Vac, 5 A, Pin Plunger Actuator, Quick Connect Termination