Sealed Ultra Subminiature Basic Switch [D2HW]

Dimensional Drawing of OMRON Micro Switches

Micro Switches Model D2HW-□20□□

Micro Switches Model D2HW-□21□□

Micro Switches Model D2HW-□22□□

Micro Switches Model D2HW-□23□□

*UL/cUL certified products are UL certified wires (AWG24, UL1007).

Micro Switches Model D2HW-□28□□

Specification Table of OMRON Micro Switches

■ Micro Switches Performance

Note: The above are initial values.

• *1. For pin Micro Switches, the values ​​are for the free position and full travel position, and for lever types, the values ​​are for the full travel position. The contacts makeor break within 1 ms.

■ Contact specifications

Micro Switches contact	Micro Switches specification	Micro Switches Crossbar
	Material	Gold alloy
	Interval (standard value)	0.5mm
Minimum applicable load (reference value)		DC5V 1mA

■ Micro Switches Contact specifications

Micro Switches 1a type (normally open type, with lead wire only)
( ) indicates lead wire color

■Micro Switches Type

Note 1. The length of the standard lead wire (AVSS 0.5) of the lead wire type in the table above is 30 cm.
Note 2. For UL/cUL certified products, "S" is added to the end of the model specification. The lead wire type is UL certified wire (AWG24, UL1007).

■ Mounting hole dimensions of Micro Switches (reference)

■ Micro Switches type/shape

With lead wire (right-side type) / With lead wire (bottom-side type)

■Operation characteristics of Micro Switches

Selection Support Information of OMRON Micro Switches

Cautions and Prohibitions of OMRON Micro Switches

OMRON Micro Switches Safety Precautions

●Micro Switches Protection structure

• The Micro Switches, Do not use underwater.
  Lead wire types meet the test conditions for the following standards, but these tests are to check the ingress of water after leaving them underwater for a certain period of time, and are not to open or close the switch underwater.
  JIS C0920: Degrees of protection provided by enclosures for electrical equipment (IP Code)
  IEC 60529: Degrees of protection provided by enclosures (IP Code)
  Protection class: IP67 (checks the ingress of water after leaving the Micro Switches underwater for 30 minutes at a depth of 1m)
• Please note that constant water droplets on the cover, opening and closing the cover with water droplets on it, or sudden temperature changes can cause water to get inside the cover due to breathing.
• Avoid contact with oil or chemicals
  as this may cause the materials used to change or deteriorate.
• Avoid using the product of Micro Switches in an environment where silicone adhesives, oil, grease, etc. are present, as this may result in poor contact due to the generation of silicone oxide.

●Micro Switches About soldering

When soldering the lead wire to the terminal, wrap the conductor around the terminal hole before soldering. As a guideline, soldering should be done within 3 seconds with a soldering iron tip temperature of 300°C or less, and noexternal force should be applied for 1 minute after soldering. Working at excessive temperatures or heating for long periods of time can cause deterioration of the Micro Switches's characteristics. When performing automatic soldering, solder at260°C or less for 5 seconds or less. Make sure that the flux and solder liquid level do not exceed the level of the board.

● Cam/Dog Operation

• When operating with a cam or dog, the operating speed, operating frequency, amount the actuator is pressed, and the material and shape of the cam or dog will affect the durability of the Micro Switches, so please check the actual product inadvance.

OMRON Micro Switches Usage Notes

Regarding installation

• Always turn the power OFF when installing or removing the Micro Switches, performing wiring work, or performing maintenance and inspection. To avoid the risk of electric shock or burning.
• For M3 screw mounting types, use M3 screws and flat washers, spring washers, etc. to mount firmly. The tightening torque should be 0.27 to 0.29 N m. Tightening beyond the specified torque can cause deterioration of the seal and damage the product.

●About the control settings

Please select a material for the operating body that has low friction resistance. Also, make sure that the operating body is shaped so that it does not interfere with the seal rubber. This can cause damage to the Micro Switches anddeterioration of the seal.

Micro Switches Handling

Please handle the switch with care not to tear the rubber seal on the Micro Switches.

● Regarding lead wire type wiring

Do not apply a load to the lead wires or wire them in a way that causes them to bend directly from the lead wire outlet, as this may cause damage to the switch or deterioration of the seal.

●About use with Micro Switches

Even when using within the operating range, loads that generate inrush or surges may cause a decrease in durability, so insert a contact protection circuit as necessary.