A3C Pushbutton Switch (Lighted/Non-Lighted) (Cylindrical 12-dia.) CSM_A3C_DS_E_2_1 Pushbutton Switch Series with Cylindrical 20-mm × 12-dia. Body • High-intensity uniform surface lighting. Round body enables easy hole making. Miniature size with excelle nt feeling of operation. RoHS Compliant Refer to Safety Precautions for All Pushbutton Switches and Safety Precautions on page 12. List of Models Appearance Model Rectangular A3CJ Models Square A3CA Models Round A3CT Models ■ Specifications: Refer to page 8. ■ Dimensions: Refer to page 10. ■ Accessories: Refer to page 7. ■ Precautions for correct use and safety precautions: Refer to page 12. 1 A3C Model Number Legend .............................................When placing your order, specify the individual component part model numbers of the Pushbutton, Lamp (lighted models only), and Switch, as listed in the ordering tables below. For information on combinations, refer to Ordering Information on page 3. (1) (2) (3) (4) (5) (6) A3C J - 9 0 A 1 - 24E R (3) Switch Specifications (5) Lighting (1) Shape of (2) Terminal Type (4) Lighted/Non- (6) Color of Standard Load lighted Method Pushbutton Pushbutton Sym- Type LED Lamp-lighted For LED bol Sym- Sym- Sym- Shape Operation Type Models Lamp bol bol bol 0 Solder terminal Rectan- AMomentary 0 Non-lighted Sym- Operating Sym- J 1a1b Color gular bol voltage bol B Alternate Illumination 1 only A Square 05E 5 VDC R Red T RoundColored-illumina- 12E 12 VDC Y Yellow Microload tion models are 24E 24 VDC G Green Sym- also available. Operation W White bol Refer to page 4. EMomentary 1a1b "Colored-illumi- For Incandescent F Alternate nation" models Incandescent Lamp-lighted Standard Load operate in the Lamp Models 0.5 A at 250 VAC way shown be- 1 A at 125 VAC low: Sym- Sym- Operating Color 1 A at 30 VDC bol Lit Unlit bol voltage Microload R Red White Color 06 5 VAC/VDC 0.1 A at 125 VAC Y Yellow 0.1 A at 30 VDC The built-in LED 14 12 VAC/VDC is colored. G Green 28 24 VAC/VDC Minimum applicable load A Blue 1 mA at 5 VDC W White Momentary-action: Self-resetting Alternate-action: Self-holding For Non- Non-lighted lighted Models Models No symbol Sym- Color bol R Red Y Yellow G Green W White A Blue B Black 2 A3C Ordering Information Ordering as a Set ................................ The model numbers used to order sets of Units are given in the following tables. One set comprises the Pushbutton, Lamp (lighted models only), and Switch. Rectangular Square Round Models Models Models A3CJ A3CA A3CT Lighted Pushbutton Switches (SPST-NO+SPST-NC Solder Terminals) Standard load Microload Operation Momentary operation (Self-resetting) Alternate operation (Self-holding) Momentary operation (Self-resetting) Pushbutton color symbol Shape Lighting Set Set Set (Color) A3CJ-90A1-05E@ A3CJ-90B1-05E@ A3CJ-90E1-05E@ R: red Y: yellow LED lamp A3CJ-90A1-12E@ A3CJ-90B1-12E@ A3CJ-90E1-12E@ G: green W: white A3CJ-90A1-24E@ A3CJ-90B1-24E@ A3CJ-90E1-24E@ Rectangular R: red A3CJ-90A1-06@ (A3CJ) --- Y: yellow Incandescent A3CJ-90A1-14@ --- G: green lamp W: white A3CJ-90A1-28@ A3CJ-90B1-28@ A: blue Non-lighted A3CJ-90A0-@ A3CJ-90B0-@ A3CJ-90E0-@ B: black * A3CA-90A1-05E@ A3CA-90B1-05E@ A3CA-90E1-05E@ R: red Y: yellow LED lamp A3CA-90A1-12E@ A3CA-90B1-12E@ A3CA-90E1-12E@ G: green W: white A3CA-90A1-24E@ A3CA-90B1-24E@ A3CA-90E1-24E@ Square R: red A3CA-90A1-06@ (A3CA) --- Y: yellow Incandescent A3CA-90A1-14@ --- G: green lamp W: white A3CA-90A1-28@ A3CA-90B1-28@ A: blue Non-lighted A3CA-90A0-@ A3CA-90B0-@ A3CA-90E0-@ B: black * A3CT-90A1-05E@ A3CT-90B1-05E@ A3CT-90E1-05E@ R: red Y: yellow LED lamp A3CT-90A1-12E@ A3CT-90B1-12E@ A3CT-90E1-12E@ G: green W: white A3CT-90A1-24E@ A3CT-90B1-24E@ A3CT-90E1-24E@ Round R: red A3CT-90A1-06@ (A3CT) --- Y: yellow Incandescent A3CT-90A1-14@ --- G: green lamp W: white A3CT-90A1-28@ A3CT-90B1-28@ A: blue Non-lighted A3CT-90A0-@ A3CT-90B0-@ A3CT-90E0-@ B: black * Note: 1. Enter the desired color symbol for the Pushbutton in the @ at the end of the model number. 2. There are also alternate-operation models that can be used for microloads. Refer to the Switch table on page 6. * Black ("B") Pushbuttons are only available for non-lighted models. Individual models: Refer to pages 5 to 6. ■ Specifications: Refer to page 8. ■ Dimensions: Refer to page 10. (The Pushbutton, Lamp, and Switch can be ordered separately.) ■ Accessories: Refer to page 7. 3 A3C Ordering Information Illumination-only and Colored-illumination LED Models "Illumination only" describes LED models for which the screen color is the same whether the LED is lit or not. Example: Red LED Not lit Cap (red) Red Pushbutton Legend plate (milky white) Lit Red Reflective plunger LED lamp (red) - - - Lamp "Colored illumination" describes LED models for which the screen color is white when the LED is not lit and changes to the color of the LED lamp when the LED is lit. Example: Red LED Not lit White White cap (semi-transparent) Pushbutton Legend plate (milky white) Lit Red Reflective plunger LED lamp (red) - - - Lamp Ordering: With colored-illumination models, order the Pushbutton, Lamp, and Switch as shown in the following table. Illuminated color Pushbutton Lamp (LED) Switch Red A16-@DR IP40 A3C@-500W Enter one of the Enter one of the following sym- following symbols in @. Refer to page 6. Make the se- Yellow bols in @. A16-@DY 5: 5 VDC lection according to the J: Rectangular 12: 12 VDC shape of the Pushbutton. A: Square 24: 24 VDC T: Round Green A16-@DG 4 A3C Ordering Information Ordering Individually ............... Pushbuttons, Lamps, and Switches can be ordered separately. Combinations that are not available as sets can be created using individual Units. Also, store the parts as spares for maintenance and repairs. Ordering: Specify a model number from the following page. LED Lamp Non-lighted Models Operation Unit Operation Unit Lamps LED Lamp Incandescent Lamp Switch Switch Ordering set combinations: Refer to page 3. ■ Specifications: Refer to page 8. ■ Dimensions: Refer to page 10. ■ Accessories: Refer to page 7. 5 A3C Ordering Information Ordering Individually................Pushbuttons, Lamps, and Switches can be ordered separately. Combinations that are not available as sets can be created using individual Units. Also, store the parts as spares for maintenance and repairs. Pushbuttons LED Lamp Non-lighted Models Square Round Square Round Rectangular Rectangular Shape Shape Button color Button color Red A3CJ-500R A3CA-500R A3CT-500R Red A3CJ-500R A3CA-500R A3CT-500R Yellow A3CJ-500Y A3CA-500Y A3CT-500Y Yellow A3CJ-500Y A3CA-500Y A3CT-500Y Green A3CJ-500GY A3CA-500GY A3CT-500GY Green A3CJ-500G A3CA-500G A3CT-500G White A3CJ-500W A3CA-500W A3CT-500W White A3CJ-500W A3CA-500W A3CT-500W Blue A3CJ-500A A3CA-500A A3CT-500A Note: The red, yellow, and white Pushbuttons listed above can be used with either LED lamp-lighted models or incandescent lamp-lighted models. Black A3CJ-501B A3CA-501B A3CT-501B Note: Models other than black can also be used with incandescent lamps. Incandescent Lamp Square Round Rectangular Shape Button color Red A3CJ-500R A3CA-500R A3CT-500R Yellow A3CJ-500Y A3CA-500Y A3CT-500Y Green A3CJ-500G A3CA-500G A3CT-500G White A3CJ-500W A3CA-500W A3CT-500W Blue A3CJ-500A A3CA-500A A3CT-500A Lamps Incandescent Lamp LED Lamp Color Rated voltage Model Red Yellow Green White Rated voltage 6 VAC/DC A16-5 5 VDC A16-5DR A16-5DY A16-5DG A16-5DW 14 VAC/DC A16-12 12 VDC A16-12DR A16-12DY A16-12DG A16-12DW 28 VAC/DC A16-24 24 VDC A16-24DR A16-24DY A16-24DG A16-24DW Switches Sealing Degree of protection: IP40 Rectangular Square Round Shape Contact type Switch action Terminal Momentary A3CJ-7011 A3CA-7011 A3CT-7011 Standard load Solder Alternate A3CJ-7021 A3CA-7021 A3CT-7021 SPST-NO+ SPST NC Momentary A3CJ-7111 A3CA-7111 A3CT-7111 Microload Solder Alternate A3CJ-7121 A3CA-7121 A3CT-7121 Ordering set combinations: Refer to page 3. ■ Specifications: Refer to page 8. ■ Dimensions: Refer to page 10. ■ Accessories: Refer to page 7. 6 A3C Ordering Information Accessories, Replacements, and Tools Accessories Name Appearance Classification Model Remarks Wire-wrap terminal A3C-4101 PCB terminal A3C-4102 Socket Cannot be used with Insulation Cover. Solder terminal A3C-4103 Insulation Cover --- A3C-3002 Cannot be used with Socket. For rectangular models A3CJ-5050 Switch Guard Cannot be used with Dust Cover. For square, round models A3CA-5050 Cannot be used with Switch Guard. Dust Cover For rectangular models A3CJ-5060 Can be used with Dust Cover attached. Tools Name Appearance Classification Model Remarks Tightening Tool --- A3C-3004 The tightening torque is 0.20 to 0.39 N·m. Extractor --- A3PJ-5080 --- Replacements Name Appearance Classification Model Remarks For rectangular models A3CJ-5201 One Legend Plate (milk-white) is supplied per Legend Plate For square models A3CA-5201 standard Switch. For round models A3CT-5201 ■ Specifications: Refer to page 8. ■ Dimensions: Refer to page 10. 7 A3C Approved Standard Ratings Characteristics UL (File No. E41515), CSA (File No. LR45258) Momentary-action models: 120 operations/minute max. Operat- Mechanical Alternate-action models: 60 operations/minute max. *1 Standard Load: 0.5 A at 250 VAC ing fre- quency 1 A at 125 VAC Electrical 20 operations/minute max. 1 A at 30 VDC Contact Standard load 50mΩ max. Microload: 0.1 A at 125 VAC Resis- 0.1 A at 30 VDC tance Microload 100mΩ max. Note: Certification has been obtained for the Switch Unit. Insulation resistance 100 MΩ min. (at 500 VDC) For detailed information on individual products that have received certification, consult your supplier. Between terminals 1,000 VAC, 50/60 Hz for 1 min of same polarity CCC (GB14048.5) Between terminals Standard Load: 0.5 A at 250 VAC 2,000 VAC, 50/60 Hz for 1 min of different polarity Dielectric Microload: 0.1 A at 250 VAC strength Between each 2,000 VAC, 50/60 Hz for 1 min terminal and ground Ratings Between lamp Model Item AC resistive load DC resistive load 1,000 VAC, 50/60 Hz for 1 min *2 terminals 0.5 A at 250 VAC Vibration Standard load 1 A at 30 VDC 1 A at 125 VAC resis- Malfunction 10 to 55 Hz, 1.5-mm double amplitude *3 tance Microload * 0.1 A at 125 VAC 0.1 A at 30 VDC 2 Shock Destruction 500 m/s Note: The above ratings are for testing under the following conditions: resis- 1) Load: Resistive load 2 Malfunction 150 m/s *3 tance 2) Mounting conditions: No vibrations or shock 3) Temperature: 20°C ± 2°C Momentary-operation models: 1,000,000 operations min. Mechanical 4) Operation frequency: 20 operations/minute Alternate-operation models: 100,000 operations min. *1 Durability * The minimum permissible load is 1 mA, 5 VDC. Electrical 100,000 operations min. LED Lamp Approx. 5 g Operating Internal limiting Rated voltage Rated current Ambient operating temperature −10°C to +55°C (with no icing or condensation) voltage resistance 5 VDC 30 mA 5 VDC ± 5% 33 Ω Ambient operating humidity 35% to 85%RH 12 VDC 15 mA 12 VDC ± 5% 270 Ω Ambient storage temperature −25°C to +65°C (with no icing or condensation) 24 VDC 10 mA 24 VDC ± 5% 1,600 Ω Degree of protection IP40 Electric shock protection class Class II Incandescent Lamp PTI (proof tracking index) 175 Rated voltage Rated current Operating voltage Pollution degree 3 (IEC60947-5-1) 6 VAC/DC 60 mA 5 VAC/DC 14 VAC/DC 40 mA 12 VAC/DC *1. With alternate-operation models, one operation cycle consists of set and reset operations. 28 VAC/DC 24 mA 24 VAC/DC *2. The figure given above for the dielectric strength between lamp terminals is for when there is no LED lamp or incandescent lamp mounted. *3. No malfunction for more than 1s. Operating Characteristics Operating force OF max. 2.45 N {250 gf} Releasing force RF min. 0.29 N {30 gf} Total travel TT Approx. 3.5 mm Lock travel alternate LTA min. * 0.5 mm Pretravel PT max. 2.5 mm * Alternate operation models only. Contact Form Contact name Contact form NO NO SPDT NC NC 8 A3C Nomenclature Model Structure Display Unit Structure Color cap (1) Shape of Pushbutton (2) Color of Pushbutton Legend Plate Pushbutton Reflective plunger (3) Type of Lamp Lamp Switch (4) Switch Specifications Note: The A3CJ model is shown here as a representative example. Type Specifications Shape of Pushbutton Rectangular Square Round (A3CJ) (A3CA) (A3CT) (1) ------ LED lamp-lighted Models: Red, Yellow, Green, White Incandescent lamp-lighted Models: (2) ------ Red, Yellow, Green, White, Blue Non-lighted Models: Red, Yellow, Green, White, Blue, Black LED Lamp (3) Incandescent Lamp 0.5 A at 250 VAC Standard load 1 A at 125 VAC 1 A at 30 VDC (4) 0.1 A at 125 VAC Microload 0.1 A at 30 VDC Minimum applicable load: 1 mA at 5 VDC 9 A3C Dimensions (Unit: mm) Rectangular Models/A3CJ Square Models/A3CA Round Models/A3CT 9.5 20 20 9.5 20 9.5 9.5 6 6 9.5 0.6 6 9.5 0.6 1 0.6 M12 × 1 M12 × 1 M12 × 1 14 11.8 14 dia.11.8 dia. 14 11.8 11.8 26.5 26.5 15.7 26.5 14 18 Terminal Connections Terminal SPST-NO + SPST-NC Lighted and non-lighted models Terminal Arrangement 0.6 (BOTTOM VIEW) 6.5 t0.4 1.6 Lamp terminal NC NO t0.3 L+ Solder terminal Terminal hole L- NC NO 2 0.8 0.8 Panel Cutout (Top View) Accessories used Rectangular/A3CJ Square/A3CA, Round/A3CT 7.5±0.1 +0.2 12 dia. 19 min. 2 dia. (Lock hole) 0 15 min. +0.2 5.5±0.1 12 dia. 0 Switch only 15 min. Note: Recommended panel thickness: 1.0 to 3.2 mm. Note: Recommended panel thickness: 1.0 to 3.2 mm. 7.5±0.1 +0.2 +0.2 12 dia. 22.5 min. 2 dia. 12 dia. 0 0 19 min. 5.5±0.1 With Switch Guard 19 min. 19 min. 7.5±0.1 +0.2 12 dia. 23.5 min. 2 dia. 0 5.5±0.1 With Dust Cover ---------- 19.5 min. • If the panel is to be finished (e.g., coated), make sure that the panel meets the specified dimensions after the coating. 10 A3C Dimensions (Unit: mm) Accessory Mounting Dimensions Dimensions with Socket Mounted (The diagrams below show the external dimensions for rectangular models as representative models.) Wire-wrap Terminal/A3C-4101 PCB Terminal/A3C-4102 Solder Terminal/A3C-4103 1 33.6 33.6 15.8 3.5 33.6 5 16.7 16.7 16.7 1 0.6 1.6 3.2 3.55 1.6 13.9 dia. 13.9 dia. 13.9 dia. 3.55 3.2 0.3 1 0.3 4.7 7 3.55 7 PCB Cutout (BOTTOM VIEW) Terminal Hole Dimensions 9.7±0.1 Six, 0.8 dia. 2 0.5 5.1±0.1 7.4±0.1 0.8 Switch Guard Rectangular 24.5 Square/Round 13.5 18 A3CJ-5050 A3CA-5050 24.5 1 13.5 18 Holder (black) Holder (black) Guard (transparent) Guard (transparent) 9 9 18 18 21.5 18 Torsion spring Torsion spring Dust Cover Legend Plate Insulation Cover A3CJ-5060 A3C-3002 Rectangular Square Round 24.5 13.8 18 0.8 33.6 18 10.1 9.6 10.1 13.9 dia. 14 10.1 10.1 dia. Note: 1. The thickness is 0.8 mm. Cover A (black) 2. Since the Legend Plate is made of polycarbonate, use alcohol-based paints Cover B (transparent) such as melanin, phthalic acid, or acrylic paint when marking the legend. 18.5 1 22.5 11 A3C Safety Precautions Refer to Safety Precautions for All Pushbutton Switches. CAUTION Do not apply a voltage higher than the maximum Using Microloads rated operating voltage between the lamp terminals, • Using a standard load switch for opening and closing a microload as there is a risk that the incandescent lamp or LED circuit may cause wear on the contacts. Use the switch within the lamp will be damaged, and the Pushbutton will be operating range. (Refer to the diagram below.) Even when using ejected. microload models within the operating range shown below, if inrush current occurs when the contact is opened or closed, it may cause When replacing the incandescent lamp, first turn OFF the contact surface to become rough, and so decrease life the power supply, and then wait 10 minutes before expectancy. Therefore, insert a contact protection circuit where performing replacement, as the lamp is still hot necessary. The minimum applicable load is the N-level reference immediately after the power is turned OFF, so there value. This value indicates the malfunction reference level for the is a risk of burns. reliability level of 60% (λ 60) (conforming to JIS C5003). The −6 equation, λ 60 = 0.5 x 10 /times indicates that the estimated malfunction rate is less than 1/2,000,000 with a reliability level of Precautions for Correct Use 60%. Mounting • To prevent electric shock or a fire, always make sure that the power 100mA 0.15mA 26mA 30 is turned OFF before mounting, removing, or wiring the Switch, or performing maintenance. • Do not tighten the mounting ring excessively using pliers or a similar 24 tool. Excessive tightening may damage the mounting ring. Standard Microload (Tightening torque: 0.20 to 0.39 N·m {20 gf to 40 gf}) load area area Wiring • When wiring, use wires of a size appropriate for the applied voltage 12 and carry current. Perform soldering correctly under the conditions Invalid given below. Using the Switch with the wires soldered incorrectly area may cause the terminals to become abnormally hot and cause a 5 100mA 150mA 1mA fire. 0 1. Soldering iron tip temperature: 350°C max. within 3 seconds. 0.1 1 10 100 1,000 2. Dip soldering: At 350°C within 3 seconds. Current (mA) Wait for one minute after soldering before exerting any external force on the solder. LED • Use a non-corrosive rosin liquid for the flux. • Resistance to limit the LED current is provided internally and so an • Perform wiring so that the wire sheaths do not come into contact external resistance is not required. with the Switch. If this is unavoidable, use wires that can withstand temperatures of 100°C min. Rated voltage Internal limiting resistance • After wiring to the Switch has been completed, ensure an 5 VDC 33 Ω appropriate insulation distance. 12 VDC 270 Ω Operating Environment 24 VDC 1,600 Ω • Do not use in locations that are subject to dust, oil, or metal filings as these may penetrate the interior of the Switch and cause malfunction. 12 Voltage (V) A3C Application Mounting and Replacing the Pushbutton Panel Mounting (1) Mounting Direction for the Pushbutton/Display and Lamp • Insert the Switch from the front of the panel. Mount the mounting Lighted Pushbutton Switch nut from the terminal end of the Switch and tighten it. • Insert the Lamp (incandescent lamp or LED lamp) into the • There are projections on the terminal end of the Switch which may, Pushbutton so that the lamp guide fits into the wider gap between depending on the orientation, block the nut. In this case, turn the nut the projections on the Pushbutton. until it is possible to mount it. Tighten the nut to a torque between 0.20 and 0.39 N·m. Projections • If soldering is used, mount the mounting nut first. Lead wires and LED/lamp guide mounds of solder may make it impossible to mount the nut after LED/lamp guide soldering. Mounting nut Panel Indicator • With Indicators, the Lamp is inserted facing the opposite direction (i.e., at 180°) to that for Lighted Pushbutton Switches. LED/lamp guide Socket Mounting • After securing the Switch to the panel using the mounting nut, insert Groove of the Display the Socket into the Switch. • Align the positioning holes of the Socket with the projections of the Switch before inserting the Socket. Projection of the LED/lamp Note: Push the projections on the Lamp into the grooves on the Pushbutton/ Panel Display. The Lamp for Lighted Pushbutton Switches moves, but the Lamp for Indicators is fixed. Projection of the Switch (2) Mounting Direction for the Pushbutton/Display and Switch • Insert the Pushbutton/Display into the Switch so that the lamp guide Positioning is aligned with the non-projecting part of the Switch. hole of the Socket • Apply a pressure between 9.8 and 24.5 N. Projection of the Switch Mounting the Insulation Cover • After securing the Switch to the panel using the mounting nut, pass the lead wires through the holes in the Insulation Cover and then Note: 1. The mounting direction for Indicators is 180° to that for Lighted perform wiring. Hold the Insulation Cover so that the cylindrical hole Pushbutton Switches. Be sure to insert the Legend Plate and other is facing the Switch, and insert the lead wires from the end with the parts with the correct orientation. 2. If the terminals of the Lamp become bent, it may be impossible to fit barriers. them into the lamp terminal holes. Ensure that the terminals are • After wiring is completed, mount the Insulation Cover by pushing it straight when they are inserted. into the Switch. 3. Take particular care about the mounting direction with the round models (A3CT). Insulation Cover attached to Switch Switch terminal (3) Removing the Pushbutton/Display Hold the recessed portions on the cap of the Pushbutton and pull. Recess Note: Do not use tools such as pliers to remove the Pushbutton as this may damage the cap. 13 A3C Mounting the Dust Cover 1. The Dust Cover separates into 2 parts: the cap and the mounting frame. 2. Insert the Switch into the mounting frame. (Align the lock projection with the recess on the mounting frame.) 3. Insert the Switch in the state described in step 2 into the panel. (Align the lock protrusion on the mounting frame with the hole in the panel.) 4. Mount the mounting nut from the back of the panel and tighten it. 5. Insert the cap into the mounting frame. Ensure that the entire perimeter of the cap is properly inserted into the mounting frame by pressing down on the cap from different directions. Mounting nut Cap (transparent) Mounting frame Panel Switch Lock protrusions Mounting the Switch Guard 1. Insert the Switch into the Switch Guard. 2. Insert the Switch into the panel in the state described in step 1. 3. Mount the mounting nut from the back of the panel and tighten it. Mounting nut Panel Holder (black) Guard (transparent) Application examples provided in this document are for reference only. In actual applications, confirm equipment functions and safety before using the product. Consult your OMRON representative before using the product under conditions which are not described in the manual or applying the product to nuclear control systems, railroad systems, aviation systems, vehicles, combustion systems, medical equipment, amusement machines, safety equipment, and other systems or equipment that may have a serious influence on lives and property if used improperly. Make sure that the ratings and performance characteristics of the product provide a margin of safety for the system or equipment, and be sure to provide the system or equipment with double safety mechanisms. Note: Do not use this document to operate the Unit. OMRON Corporation ELECTRONIC AND MECHANICAL COMPONENTS COMPANY Contact: www.omron.com/ecb Cat. No. A030-E1-05 0812(0207)(O) 14