Smallest sealed snap-action switch in the industry with a very long stroke for reliable ON/OFF action The case dimensions are 78% of conventional models, contributing to down-sizing of mechanical modules. Extra-long stroke even without s. ( reference value: 1.4 mm). Made of environmentally-friendly materials. ll models are lead-free, including molded lead wire models. RoHS Compliant Model Number Legend D2HW-@@@@@@-Q 1 2 4 5-6 1. Structure : Without posts (base-mounting) BR : Long post on right BL : Long post on left C : mounting models ER : Short post on right EL : Short post on left 2. Raitings 2 : 5 VDC 1m to 12 VDC 2. ctuator 0 : Pin plunger 1 : Hinge 2 : Long hinge : 4 : Hinge roller List of PCB-mounted 5 : Straight leaf 6 : Leaf 7 : leaf 8 : Long leaf 4. Contact form 1 : SPDT 2 : SPST-NC ( lead wire models only) : SPST-NO ( lead wire models only) 5. Terminals D : PCB terminals (Straight) DR : PCB Terminals (Right-angled) DL : PCB Terminals (Left-angled) H : Solder terminals M : lead wires downwards MR : lead wires on right-side ML : lead wires on left-side 6. Special Specification Due to the idiosyncrasies of the automotive parts industry, a business decision is required on individual items to determine when to start supply. Contact your OMRON representative for information on individual models. List of Short post on Long post on right right ctuator Terminals Contact form Pin plunger Straight - - ngled D2HW-BR201DR-Q D2HW-ER201DR-Q Straight - - Hinge ngled D2HW-BR211DR-Q D2HW-ER211DR-Q For PCB SPDT Long hinge Straight - - ngled D2HW-BR221DR-Q D2HW-ER221DR-Q Straight - - hinge ngled D2HW-BR21DR-Q D2HW-ER21DR-Q List of Short post on Long post on left left Without posts ctuator Terminals Contact form Pin plunger Straight - - D2HW-201D-Q ngled D2HW-BL201DL-Q D2HW-EL201DL-Q - Straight - - D2HW-211D-Q Hinge ngled D2HW-BL211DL-Q D2HW-EL211DL-Q - For PCB SPDT Long hinge Straight - - D2HW-221D-Q ngled D2HW-BL221DL-Q D2HW-EL221DL-Q - Straight - - D2HW-21D-Q hinge ngled D2HW-BL21DL-Q D2HW-EL21DL-Q - Note. ngled terminals and posts are the same direction. 24
with Solder Terminals or Lead Wires List of Short post on Long post on right right ctuator Terminals Contact form Solder SPDT D2HW-BR201H-Q D2HW-ER201H-Q SPDT D2HW-BR201M-Q D2HW-ER201M-Q Downwards SPST-NC D2HW-BR202M-Q D2HW-ER202M-Q SPST-NO D2HW-BR20M-Q D2HW-ER20M-Q Pin plunger SPST-NC D2HW-BR202MR-Q D2HW-ER202MR-Q SPST-NO D2HW-BR20MR-Q D2HW-ER20MR-Q SPST-NC D2HW-BR202ML-Q D2HW-ER202ML-Q SPST-NO D2HW-BR20ML-Q D2HW-ER20ML-Q Solder SPDT D2HW-BR211H-Q D2HW-ER211H-Q SPDT D2HW-BR211M-Q D2HW-ER211M-Q Downwards SPST-NC D2HW-BR212M-Q D2HW-ER212M-Q SPST-NO D2HW-BR21M-Q D2HW-ER21M-Q Hinge SPST-NC D2HW-BR212MR-Q D2HW-ER212MR-Q SPST-NO D2HW-BR21MR-Q D2HW-ER21MR-Q SPST-NC D2HW-BR212ML-Q D2HW-ER212ML-Q SPST-NO D2HW-BR21ML-Q D2HW-ER21ML-Q Solder SPDT D2HW-BR221H-Q D2HW-ER221H-Q SPDT D2HW-BR221M-Q D2HW-ER221M-Q Downwards SPST-NC D2HW-BR222M-Q D2HW-ER222M-Q SPST-NO D2HW-BR22M-Q D2HW-ER22M-Q Long hinge SPST-NC D2HW-BR222MR-Q D2HW-ER222MR-Q SPST-NO D2HW-BR22MR-Q D2HW-ER22MR-Q SPST-NC D2HW-BR222ML-Q D2HW-ER222ML-Q SPST-NO D2HW-BR22ML-Q D2HW-ER22ML-Q Solder SPDT D2HW-BR21H-Q D2HW-ER21H-Q SPDT D2HW-BR21M-Q D2HW-ER21M-Q Downwards SPST-NC D2HW-BR22M-Q D2HW-ER22M-Q SPST-NO D2HW-BR2M-Q D2HW-ER2M-Q hinge SPST-NC D2HW-BR22MR-Q D2HW-ER22MR-Q SPST-NO D2HW-BR2MR-Q D2HW-ER2MR-Q SPST-NC D2HW-BR22ML-Q D2HW-ER22ML-Q SPST-NO D2HW-BR2ML-Q D2HW-ER2ML-Q Solder SPDT D2HW-BR241H-Q D2HW-ER241H-Q SPDT D2HW-BR241M-Q D2HW-ER241M-Q Downwards SPST-NC D2HW-BR242M-Q D2HW-ER242M-Q Hinge roller SPST-NO D2HW-BR24M-Q D2HW-ER24M-Q SPST-NC D2HW-BR242MR-Q D2HW-ER242MR-Q SPST-NO D2HW-BR24MR-Q D2HW-ER24MR-Q SPST-NC D2HW-BR242ML-Q D2HW-ER242ML-Q SPST-NO D2HW-BR24ML-Q D2HW-ER24ML-Q Solder SPDT D2HW-BR251H-Q D2HW-ER251H-Q SPDT D2HW-BR251M-Q D2HW-ER251M-Q Downwards SPST-NC D2HW-BR252M-Q D2HW-ER252M-Q Straight leaf SPST-NO D2HW-BR25M-Q D2HW-ER25M-Q SPST-NC D2HW-BR252MR-Q D2HW-ER252MR-Q SPST-NO D2HW-BR25MR-Q D2HW-ER25MR-Q SPST-NC D2HW-BR252ML-Q D2HW-ER252ML-Q SPST-NO D2HW-BR25ML-Q D2HW-ER25ML-Q Solder SPDT D2HW-BR261H-Q D2HW-ER261H-Q SPDT D2HW-BR261M-Q D2HW-ER261M-Q Downwards SPST-NC D2HW-BR262M-Q D2HW-ER262M-Q SPST-NO D2HW-BR26M-Q D2HW-ER26M-Q Leaf SPST-NC D2HW-BR262MR-Q D2HW-ER262MR-Q SPST-NO D2HW-BR26MR-Q D2HW-ER26MR-Q SPST-NC D2HW-BR262ML-Q D2HW-ER262ML-Q SPST-NO D2HW-BR26ML-Q D2HW-ER26ML-Q Solder SPDT D2HW-BR271H-Q D2HW-ER271H-Q SPDT D2HW-BR271M-Q D2HW-ER271M-Q Downwards SPST-NC D2HW-BR272M-Q D2HW-ER272M-Q SPST-NO D2HW-BR27M-Q D2HW-ER27M-Q leaf SPST-NC D2HW-BR272MR-Q D2HW-ER272MR-Q SPST-NO D2HW-BR27MR-Q D2HW-ER27MR-Q SPST-NC D2HW-BR272ML-Q D2HW-ER272ML-Q SPST-NO D2HW-BR27ML-Q D2HW-ER27ML-Q Solder SPDT D2HW-BR281H-Q D2HW-ER281H-Q SPDT D2HW-BR281M-Q D2HW-ER281M-Q Downwards SPST-NC D2HW-BR282M-Q D2HW-ER282M-Q SPST-NO D2HW-BR28M-Q D2HW-ER28M-Q Long leaf SPST-NC D2HW-BR282MR-Q D2HW-ER282MR-Q SPST-NO D2HW-BR28MR-Q D2HW-ER28MR-Q SPST-NC D2HW-BR282ML-Q D2HW-ER282ML-Q SPST-NO D2HW-BR28ML-Q D2HW-ER28ML-Q Note. The length of standard lead wires (VSS 0.5) for molded lead wire models shown above is 0 cm. 25
with Solder Terminals or Lead Wires List of Short post on Long post on left left mounting ctuator Terminals Contact form Solder SPDT D2HW-BL201H-Q D2HW-EL201H-Q D2HW-C201H-Q SPDT D2HW-BL201M-Q D2HW-EL201M-Q D2HW-C201M-Q Downwards SPST-NC D2HW-BL202M-Q D2HW-EL202M-Q D2HW-C202M-Q SPST-NO D2HW-BL20M-Q D2HW-EL20M-Q D2HW-C20M-Q Pin plunger SPST-NC D2HW-BL202MR-Q D2HW-EL202MR-Q D2HW-C202MR-Q SPST-NO D2HW-BL20MR-Q D2HW-EL20MR-Q D2HW-C20MR-Q SPST-NC D2HW-BL202ML-Q D2HW-EL202ML-Q - SPST-NO D2HW-BL20ML-Q D2HW-EL20ML-Q - Solder SPDT D2HW-BL211H-Q D2HW-EL211H-Q D2HW-C211H-Q SPDT D2HW-BL211M-Q D2HW-EL211M-Q D2HW-C211M-Q Downwards SPST-NC D2HW-BL212M-Q D2HW-EL212M-Q D2HW-C212M-Q SPST-NO D2HW-BL21M-Q D2HW-EL21M-Q D2HW-C21M-Q Hinge SPST-NC D2HW-BL212MR-Q D2HW-EL212MR-Q D2HW-C212MR-Q SPST-NO D2HW-BL21MR-Q D2HW-EL21MR-Q D2HW-C21MR-Q SPST-NC D2HW-BL212ML-Q D2HW-EL212ML-Q - SPST-NO D2HW-BL21ML-Q D2HW-EL21ML-Q - Solder SPDT D2HW-BL221H-Q D2HW-EL221H-Q D2HW-C221H-Q SPDT D2HW-BL221M-Q D2HW-EL221M-Q D2HW-C221M-Q Downwards SPST-NC D2HW-BL222M-Q D2HW-EL222M-Q D2HW-C222M-Q SPST-NO D2HW-BL22M-Q D2HW-EL22M-Q D2HW-C22M-Q Long hinge SPST-NC D2HW-BL222MR-Q D2HW-EL222MR-Q D2HW-C222MR-Q SPST-NO D2HW-BL22MR-Q D2HW-EL22MR-Q D2HW-C22MR-Q SPST-NC D2HW-BL222ML-Q D2HW-EL222ML-Q - SPST-NO D2HW-BL22ML-Q D2HW-EL22ML-Q - Solder SPDT D2HW-BL21H-Q D2HW-EL21H-Q D2HW-C21H-Q SPDT D2HW-BL21M-Q D2HW-EL21M-Q D2HW-C21M-Q Downwards SPST-NC D2HW-BL22M-Q D2HW-EL22M-Q D2HW-C22M-Q SPST-NO D2HW-BL2M-Q D2HW-EL2M-Q D2HW-C2M-Q hinge SPST-NC D2HW-BL22MR-Q D2HW-EL22MR-Q D2HW-C22MR-Q SPST-NO D2HW-BL2MR-Q D2HW-EL2MR-Q D2HW-C2MR-Q SPST-NC D2HW-BL22ML-Q D2HW-EL22ML-Q - SPST-NO D2HW-BL2ML-Q D2HW-EL2ML-Q - Solder SPDT D2HW-BL241H-Q D2HW-EL241H-Q D2HW-C241H-Q SPDT D2HW-BL241M-Q D2HW-EL241M-Q D2HW-C241M-Q Downwards SPST-NC D2HW-BL242M-Q D2HW-EL242M-Q D2HW-C242M-Q Hinge roller SPST-NO D2HW-BL24M-Q D2HW-EL24M-Q D2HW-C24M-Q SPST-NC D2HW-BL242MR-Q D2HW-EL242MR-Q D2HW-C242MR-Q SPST-NO D2HW-BL24MR-Q D2HW-EL24MR-Q D2HW-C24MR-Q SPST-NC D2HW-BL242ML-Q D2HW-EL242ML-Q - SPST-NO D2HW-BL24ML-Q D2HW-EL24ML-Q - Solder SPDT D2HW-BL251H-Q D2HW-EL251H-Q D2HW-C251H-Q SPDT D2HW-BL251M-Q D2HW-EL251M-Q D2HW-C251M-Q Downwards SPST-NC D2HW-BL252M-Q D2HW-EL252M-Q D2HW-C252M-Q Straight leaf SPST-NO D2HW-BL25M-Q D2HW-EL25M-Q D2HW-C25M-Q SPST-NC D2HW-BL252MR-Q D2HW-EL252MR-Q D2HW-C252MR-Q SPST-NO D2HW-BL25MR-Q D2HW-EL25MR-Q D2HW-C25MR-Q SPST-NC D2HW-BL252ML-Q D2HW-EL252ML-Q - SPST-NO D2HW-BL25ML-Q D2HW-EL25ML-Q - Solder SPDT D2HW-BL261H-Q D2HW-EL261H-Q D2HW-C261H-Q SPDT D2HW-BL261M-Q D2HW-EL261M-Q D2HW-C261M-Q Downwards SPST-NC D2HW-BL262M-Q D2HW-EL262M-Q D2HW-C262M-Q SPST-NO D2HW-BL26M-Q D2HW-EL26M-Q D2HW-C26M-Q Leaf SPST-NC D2HW-BL262MR-Q D2HW-EL262MR-Q D2HW-C262MR-Q SPST-NO D2HW-BL26MR-Q D2HW-EL26MR-Q D2HW-C26MR-Q SPST-NC D2HW-BL262ML-Q D2HW-EL262ML-Q - SPST-NO D2HW-BL26ML-Q D2HW-EL26ML-Q - Solder SPDT D2HW-BL271H-Q D2HW-EL271H-Q D2HW-C271H-Q SPDT D2HW-BL271M-Q D2HW-EL271M-Q D2HW-C271M-Q Downwards SPST-NC D2HW-BL272M-Q D2HW-EL272M-Q D2HW-C272M-Q SPST-NO D2HW-BL27M-Q D2HW-EL27M-Q D2HW-C27M-Q leaf SPST-NC D2HW-BL272MR-Q D2HW-EL272MR-Q D2HW-C272MR-Q SPST-NO D2HW-BL27MR-Q D2HW-EL27MR-Q D2HW-C27MR-Q SPST-NC D2HW-BL272ML-Q D2HW-EL272ML-Q - SPST-NO D2HW-BL27ML-Q D2HW-EL27ML-Q - Solder SPDT D2HW-BL281H-Q D2HW-EL281H-Q D2HW-C281H-Q SPDT D2HW-BL281M-Q D2HW-EL281M-Q D2HW-C281M-Q Downwards SPST-NC D2HW-BL282M-Q D2HW-EL282M-Q D2HW-C282M-Q SPST-NO D2HW-BL28M-Q D2HW-EL28M-Q D2HW-C28M-Q Long leaf SPST-NC D2HW-BL282MR-Q D2HW-EL282MR-Q D2HW-C282MR-Q SPST-NO D2HW-BL28MR-Q D2HW-EL28MR-Q D2HW-C28MR-Q SPST-NC D2HW-BL282ML-Q D2HW-EL282ML-Q - SPST-NO D2HW-BL28ML-Q D2HW-EL28ML-Q - Note. The length of standard lead wires (VSS 0.5) for molded lead wire models shown above is 0 cm. 26
Contact form SPDT SPST-NC, ( Lead Wire Only) SPST-NO, ( Lead Wire Only) COM (Black) NO NC (Blue)(Red) COM (Black) NC (Red) COM (Black) NO (Blue) lead wire colors are indicated in parentheses. Contact Specifications Characteristics Specification Contact Material Gap (standard value) Minimum applicable load (see note) Ratings Crossbar Gold alloy 5 VDC 1m Rated voltage Resistive load 125 VC 0.1 12 VDC 24 VDC 42 VDC 2 1 0.5 Note. The above rating values apply under the following test conditions. (1) mbient temperature: 20±2 C (2) mbient humidity: 65±5 % () frequency: 0 operations/min Permissible operating speed Permissible operating frequency Insulation resistance Contact Terminals resistance (initial value) lead wire models Between terminals of the same polarity Dielectric strength Vibration resistance * 1 Shock resistance Durability * 2 Degree of protection Between current-carrying metal parts and ground Between terminals and non-current-carrying metal parts Malfunction Durability Malfunction * 1 Mechanical Electrical Terminals molded lead wire models mbient operating temperature mbient operating humidity Weight 1 mm to 500 mm/s (for pin plunger models) 0 operations/min 100 MΩ min. (at 500 VDC with insulation tester) 100 mω max. 150 mω max. 600 VC 50/60 Hz 1min 1,500 VC 50/60 Hz 1 min 1,500 VC 50/60 Hz 1 min 10 to 55 Hz, 1.5 mm double amplitude 1,000 m/s 2 {approx. 100G} max. 00 m/s 2 {approx. 0G} max. 1,000,000 operations min. (0 operations/min) 100,000 operations min. (20 operations/min) IEC IP67 (excluding the terminals on terminal models) IEC IP67-40 to +85 C (at ambient humidity of 60% max.) (with no icing or condensation) 95% max. (for +5 to +5 C) pprox. 0.7 g (for pin plunger models with terminals) Note. The data given above are initial values. *1. For the pin plunger models, the above values apply for use at the free position, operating position, and total travel position. For the models, they apply at the total travel position. Close or open circuit of the contact is 1ms max. *2. For testing conditions, consult your OMRON sales representative. 27
Structure and Reference Positions for Characteristics (Unit: mm) Without posts D2HW-@ Long post D2HW-B@ D2HW-C@ 7 Standard Position 4 1.7 dia. Standard Position 1.7 dia. 2.6±0.05 Standard Position 1±0.1-0.1 0 dia..±0.15 dia..1 +0.1-0.0 6 1. 5. 1. -0.2 5 0 5. Hole Dimensions (Reference) 2.4 +0.1 0 dia. holes (depth: D2HW-E@: 1.5 mm min. D2HW-B@: 5 mm min.) 2.6 2.4 +0.1 0 18.5 Hole Dimensions (Reference) +0.1 0 dia. holes (depth: 1.5 mm min.) M Tap 5. 1.5-0.1 0 1.5-0.1 0 1±0.1 Short post D2HW-E@ 1.7 dia. 2.6±0.05 1.5 +0-0.2 1. 5. Note. The reference positions used for Free Position (FP), Position (OP), and Total Travel Position () values are as shown above for each type of mounting. 28
Terminals/ppearances (Unit: mm) PCB terminals (Straight) PCB Terminals (Left-angled) PCB terminals (Right-angled) 2.5 6 6 5.08 5.08-0.6 0.5 5.08 5.08-0.6 0.5.1 5.08 5.08-0.6 0.5.1 <PCB Dimensions (Reference)> <PCB Cutout Dimensions (Reference)> -1 +0.1 0 dia. holes 2.4 +0.1 0 dia. holes (depth: 5 mm min.) 2.6 5.0 5.0 6±0.1 2.4 +0.1 0 5.0 5.0-1 +0.1 0 dia. holes Solder terminals 1.8.5 1.2-2 4.8 4.8 0.5 Lead Wires on Lead Wires on Right-side Lead Wires Downwards COM VSS 0.5 (Black)* NC VSS 0.5 (Red) or NO VSS 0.5 (Blue) 12 12 NC VSS 0.5 (Red)* Or NO VSS 0.5 (Blue) COM VSS 0.5 (Black) 12 5 00±10 1. 1. 00±10 5 00±10 * COM VSS 0.5 (Black) NO VSS 0.5 (Blue) NC VSS 0.5 (Red) 5 29
Dimensions (Unit: mm) / Characteristics The following illustrations and drawings are representative models. When ordering, replace @ with the code for the mounting structure, contact form and terminal that you need. See the " List of " for available combinations of appearances. Refer to page 28 to 29 for the mounting structures and terminal forms. Pin plunger D2HW-@20@@-Q 4 1.7 dia. 7 5. Without posts 11.2 mm 10.4±0.2 mm 9.1 mm with 0.75N {76 gf} 0.10N {10 gf} 1.4 mm (reference value) 0.25 mm 7.2 mm 6.4±0.2 mm 5.1 mm Hinge Lever D2HW-@21@@-Q 0.4 7 1 t0. Stainless-steel 1.15.4 Without posts with 0.75N {76 gf} 0.07N {7 gf} 1.6 mm (reference value) 12.8 mm 11.5± 10 mm 8.8 mm 7.5± 6 mm Long Hinge Lever D2HW-@22@@-Q Simulated Roller Lever D2HW-@2@@-Q R2.4 20 t0. Stainless-steel 1.15 15 0.4 7 t0. Stainless-steel 1.15 0.4 7.4 Without posts with 0.5N {50 gf} 0.0N { gf} 2.5 mm (reference value) 0.8 mm 15.5 mm 1.±0.8 mm 11 mm Without posts 11.5 mm 9.±0.8 mm 7 mm with 0.65N {66 gf} 0.05N {5 gf} 1.9 mm (reference value) 1 mm 15.2± 1.5 mm 12.5 mm 11.2± 9.5 mm Hinge Roller Lever D2HW-@24@@-Q 4.8 2.8 dia. Polyacetal resin roller 15 t0. Stainless-steel 1.15 0.4 4.6 with 0.65N {66 gf} 0.0N { gf} 1.9 mm (reference value) 0.6 mm 15. mm 14±0.6 mm 12. mm Note1. Unless otherwise specified, a tolerance of ±0.2mm applies to all dimensions. Note2. The operating are for operation in the direction ( ). 0
Leaf straight D2HW-@25@@-Q t0. Stainless-steel.4 20 1.7 with 1.2N {122 gf} 0.05N {5 gf} 2.5 mm (reference value) 0.7 mm 11.9 mm 8.1±0.8 mm 6.0 mm Leaf Lever D2HW-@26@@-Q t0. Stainless-steel.4 14 1.7 with 1.8N {18 gf} 0.20N {20 gf} 1.8 mm (reference value) 9. mm 7.4± 5.8 mm Simulated Roller Lever D2HW-@27@@-Q Long Leaf Lever D2HW-@28@@-Q R2 t0. Stainless-steel 16 1.7.4 with 1.8N {18 gf} 0.20N {20 gf} 2.0 mm (reference value) 1.0 mm 10.8± 8.9 mm 20.85±1 12-0.1 0 dia. t0.2 Stainless-steel 18.5 1±0.1.±0.15 dia..1 +0.1-0.0 6 with 0.9N {92 gf} 0.05N {5 gf} 2.8 mm (reference value) 0.7 mm 19 mm 15.4±1.5 mm 12.8 mm * COM VSS 0.5 (Black) NO VSS 0.5 (Blue) 00±10 NC VSS 0.5 (Red) 5 1. 1.5 0-0.1 5. 1.5 0-0.1 Note1. Unless otherwise specified, a tolerance of ±0.2mm applies to all dimensions. Note2. The operating are for operation in the direction ( ). 1
Precautions Please refer to "Safety Precautions for ll " on page 15 for correct use. Cautions Correct Use Degree of Protection Do not use this product underwater. lthough molded lead wire models satisfy the test conditions for the standard given below, this test is to check the ingress of water into the switch enclosure after submerging the Switch in water for a given time. Satisfying this test condition does not mean that the Switch can be used underwater. JIS C0920: Degrees of protection provided by enclosures of electrical apparatus (IP Code) IEC 60529: Degrees of protection provided by enclosures (IP Code) Degree of protection: IP67 (check water intrusion after immersion for 0 min. submerged 1m underwater) Do not operate the Switch when it is exposed to water spray, or when water drops adhere to the Switch surface, or during sudden temperature changes, otherwise water may intrude into the interior of the Switch due to a suction effect. Prevent the Switch from coming into contact with oil and chemicals. Otherwise, damage to or deterioration of Switch materials may result. Do not use the Switch in areas where it is exposed to silicon adhesives, oil, or grease. Otherwise faulty contact may result due to the generation of silicon oxide. Soldering When soldering the lead wire to the terminal, first insert the lead wire conductor through the terminal hole and then conduct soldering. Make sure that the temperature of the soldering iron tip does not exceed 00 C, and complete the soldering within seconds. Do not apply any external force for 1 minute after soldering. Soldering at an excessively high temperature or soldering for more than seconds may deteriorate the of the Switch. In case of automatic soldering, please do not apply the heat beyond 260 C within 5 seconds. Pay careful attention so that flux or solder liquid does not flow over the edge of the PCB panel. Side-actuated (Cam/Dog) Operation When using a cam or dog to operate the Switch, factors such as the operating speed, operating frequency, push-button indentation, and material and shape of the cam or dog will affect the durability of the Switch. Confirm performance specifications under actual operating conditions before using the Switch in applications. Turn OFF the power supply before mounting or removing the Switch, wiring, or performing maintenance or inspection. Failure to do so may result in electric shock or burning. For mounting models, use M mounting screws with plane washers or spring washers to securely mount the Switch. Tighten the screws to a torque of 0.27 to 0.29 N m {27.5 to 29.5 gf}. Exceeding the specified torque may result in deterioration of the sealing or damage. For models with posts, secure the posts by thermal caulking or by pressing into an attached device. When pressed into an attached device, provide guides on the opposite ends of the posts to ensure that they do not fall out or rattle. Thermal caulking conditions varies according to the equipment, jig and base used for switch mounting. Consult your OMRON sales representative for details. Body Use an operating body with low frictional resistance and of a shape that will not interfere with the sealing rubber, otherwise the plunger may be damaged or the sealing may deteriorate. Handling Do not handle the Switch in a way that may cause damage to the sealing rubber. When handling the Switch, ensure that pressure is not applied to the posts in the directions shown in the following diagram. lso, ensure that uneven pressure or pressure in a direction other than the operating direction is not applied to the ctuator as shown in the following diagram. Otherwise, the post, ctuator, or Switch may be damaged, or the service life may be reduced. Wiring Lead Wire When wiring molded lead wire models, ensure that there is no weight applied on the wire or that there are no sharp bends near the parts where the wire is drawn out. Otherwise, damage to the Switch or deterioration in the sealing may result. Using Micro Loads Even when using micro load models within the operating range shown below, if inrush/surge current occurs, it may increase the contact wear and so decrease durability. Therefore, insert a contact protection circuit where necessary. 2