A20GDB7K

A20GDB7K OMRON | Alldatasheet

Document overview

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Technical content

A General-purpose Snap Action Switch

• High-capacity switch capable of handling 20 A loads with large inrush currents  Directly switches such loads as motors, halogen lamps and solenoids  Same shape as OMRON snap action switch model Z except in pin plunger position, yet endures inrush currents as large as 75 A.

Ordering Information

Terminal Solder terminal Screw terminal (-B) Actuator Model Model Pin plunger A-20G A-20G-B Short spring plunger A-20GD A-20GD-B Panel mount plunger A-20GQ A-20GQ-B Panel mount roller plunger A-20GQ22 A-20GQ22-B Panel mount cross roller plunger --- A-20GQ21-B Short hinge lever A-20GV21 A-20GV21-B Hinge lever A-20GV A-20GV-B Short hinge roller lever A-20GV22 A-20GV22-B Hinge roller lever A-20GV2 A-20GV2-B A - 20 G - 321 4 1. Ratings 20: 20 A (250 VAC) 2. Contact Gap G: 0.5 mm 3. Actuator None: Pin plunger D: Short spring plunger Q: Panel mount plunger Q21: Panel mount cross roller plunger Q22: Panel mount roller plunger V: Hinge lever V2: Hinge roller lever V21: Short hinge lever V22: Short hinge roller lever 4. Terminals None: Solder terminal B: Screw terminal (with toothed washer)

20 Snap Action Switch A

■Characteristics Note: 1. The value is for the pin plunger. 2. Malfunction: 1 ms max. ■Operating Characteristics ■Ratings Note: 1. The above values are for steady-state current. 2. Inductive load has a power factor of 0.4 min. (AC) and a time constant of 7 ms max. (DC). 3. Lamp load has an inrush current of 10 times the steady-state current. 4. Motor load has an inrush current of 6 times the steady-state current. 5. The ratings values apply under the following test conditions: (1) Ambient temperature: 20±2°C (2) Ambient humidity: 65±5%RH (3) Operating frequency: 20 operations/min ■Contact Specification ■Safety Standards Ratings UL/CSA (General ratings only) Operating speed 0.01 mm to 1m/s (see note 1) Operating frequency Mechanical 240 operations/min Electrical 20 operations/min Contact resistance 15 mΩ max. (initial value) Insulation resistance 100 MΩ min. (at 500 VDC) Dielectric strength 1,000 VAC, 50/60 Hz for 1 min between terminals of the same polarity 2,000 VAC, 50/60 Hz for 1 min between the current-carrying metal parts and the ground, and between each terminal and non-current-carrying metal parts Vibration resistance Malfunction 10 to 55 Hz, 1.5-mm double amplitude (See note 2) Shock resistance Destruction 1,000 m/s2 max. Malfunction 300 m/s2 max. (See notes 1 and 2) Degree of protection IP00 Degree of protection against electric shock Class I Proof tracking index (PTI) 175 Ambient operating temperature −25°C to 80°C (with no icing) Ambient operating humidity 35% to 85%RH Service life Mechanical 1,000,000 operations min. Electrical 500,000 operations min. Weight Approx. 22 to 58 g Characteristics A-20G-B A-20GD-B A-20GQ-B A-20GQ22-B A-20GQ21-B A-20GV21-B A-20GV-B A-20GV22-B A-20GV2-B OF 400 to 625 g 630 g max. 160 g 70 g 160 g 90 g RF min. 285 g 280g 42 g 14 g 42 g 14 g Rated voltage (V) Non-inductive load (A) Inductive load (A) Resistive load Lamp load Inductive load Motor load NC NO NC NO NC NO NC NO

125 VAC

250 VAC

500 VAC

7.5 7.5 12.5 8.3

8 VDC

14 VDC

30 VDC

125 VDC

250 VDC

0.5 0.25 0.5 0.25 1.5 1.5 1.5 0.5 0.25 0.05 0.03 12.5 12.5 0.05 0.03 Contacts Shape Rivet Material Silver alloy Gap (standard value) 0.5 mm Inrush current NC 75 A max. NO 75 A max. Rated voltage A-20G

125 VAC 1 HP and 10 A "L" (Tungsten)

250 VAC 2 HP

480 VAC 20 A

125 VDC 0.5 A 250 VDC 0.25 A

■Mechanical Durability (A-20G) ■Electrical Durability (A-20G) ■Structure Contact Form (SPDT) Dimensions Note: Unless otherwise specified, all units are in millimeters and a tolerance of ± 0.4 mm applies to all dimensions. ■Terminals Screw Terminals (-B) Solder Terminal (Blank) Note: Appropriate terminal screw tightening torque: 0.78 to 1.18 N·m. ■Mounting Holes All switches can be mounted usi ng M4 mounting screws with plane washers or spring washers to securely mount the Switch. Tighten the screws to a torque of 1.18 to 1.47 N·m. Versions with panel mount plungers can be panel mounted via the plunger, provided that the hexagonal nut of the actuator is tightened to a torque of 2.94 to 4.9 N·m. Note: Mount using either the side mounting holes or the panel mount plunger, not both. If using the side mounting holes, then remove the hexagonal nut(s) from the panel mount plunger. 100 500 700 1,000 300 Durability (x104 operations) Overtravel (mm) Ambient temperature: 20 ±2°C Ambient humidity: 65 ±5%RH Without load Operatin g frequency: 240 operations/min 100 500 700 1,000 300 52 5 10 15 200 Durability (x104 operations) Switchin g current (A) Ambient temperature: 20 ±2°C Ambient humidity: 65 ±5%RH Operatin g frequency: 20 operations/min 250 VAC, cos φ = 0.4

250 VAC,

cos φ = 1

125 VAC, cos φ = 1

125 VAC,

cos φ = 0.4 COM NC NO COM NO NC 132 17.45±0.2 49.2 9.2 20 20 Three, M4 × 5.5 Terminal screws (with toothed washer) COM NO NC 11.9 6.4 49.2 25.4±0.1 17.45±0.2 25.4±0.1 Two, 4.2 dia. mounting holes or M4 Panel Mount Plunger Panel Mount Roller Plunger 12.5 dia. +0.2 0 12.5 dia. 13+0.2 +0.2 +0.2 Accessories (Terminal Covers, and Separators): Refer to ‘Z/A/X/DZ Common Accessories’ datasheet

22 Snap Action Switch A

Note: 1. All drawings show the switches with screw terminals. For solder terminals, remove the “-B” from the end of the part number 2. Unless otherwise specified, all units are in millimeters and a tolerance of ± 0.4 mm applies to all dimensions. 49.2 11.925.4±0.1 19.05±0.25 24.2 17.45±0.2 OP PT 9.2 2.3SR * +0.075 −0.025 * Stainless-steel plunger 2.3 dia. 4.2 dia. hole +0.075 −0.0254.2 dia. +0.1 −0.054.36 dia. Pin Plunger A-20G-B 24.2 7.5 OP PT 7.15 dia. 11.2 dia. 15 dia. 11.9SR * 19.05±0.25 * Stainless-steel plunger Short Spring Plunger A-20GD-B OP 16.3 *213.1 M12 × 1 mounting screw 16 dia. *1 Stainless-steel plunger *2 Incomplete screw part with a maximum length of 1.5 mm. Two hexagon nuts (2 t × 14 width across flats) Two lock nuts (2 t × 15.6 width across flats) Panel Mount Plunger A-20GQ-B Note: Do not use both M12 mounting screw and mounting holes at the same time. OP 16.3 *215.5 PT 19.05±0.25 M12 × 1 mounting screw Two hexagon nuts (3 t × 17 width across flats) 12.7 dia. × 4.8 *1 16 dia. *1 Stainless-steel roller *2 Incomplete screw part with a maximum length of 1.5 mm. Panel Mount Roller Plunger A-20GQ22-B Note: Do not use both M12 mounting screw and mounting holes at the same time. OP 16.3 *215.5 PT 19.05±0.25 M12 × 1 mounting screw Two hexagon nuts (3 t × 17 width across flats) 12.7 dia. × 4.8 *1 16 dia. *1 Stainless-steel roller *2 Incomplete screw part with a maximum length of 1.5 mm. Panel Mount Cross Roller Plunger A-20GQ21-B Note: Do not use both M12 mounting screw and mounting holes at the same time.

Note: 1. All drawings show the switches with screw terminals. For solder terminals, remove the “-B” from the end of the part number 2. Unless otherwise specified, all units are in millimeters and a tolerance of ± 0.4 mm applies to all dimensions. 4.9 17.920.2 28.3R 14.7 OP PT 24.56±0.25 * Stainless-steel lever t = 1 * Short Hinge Lever A-20GV21-B 4.9 17.920.2 63.5R 14.7 OP PT 24.56±0.25 * Stainless-steel lever t = 1 * Hinge Lever A-20GV-B 17.920.2 14.7 OP PT 26.2R 24.56±0.25 * Stainless-steel lever 9.5 dia. × 4 (plastic roller)t = 1 * Short Hinge Roller Lever A-20GV22-B 17.920.2 14.7 OP PT 48.4R 24.56±0.25 * Stainless-steel lever 9.5 dia. × 4 (plastic roller) t = 1 * Hinge Roller Lever A-20GV2-B

24 Snap Action Switch A

Be sure to read the precautions and information common to all Snap Action and Detection Switches, contained in the Technical User’s Guide, “Snap Action Switches, Technical Information” for correct use. Precautions for Safe Use Terminal Connection When soldering lead wires to the Switch, make sure that the capacity of the soldering iron is 60 W maximum. Do not take more than 5 s to solder any part of the Switch. The characteristics of the Switch will deteriorate if a soldering iron with a capacity of more than 60 W is applied to any part of the Switch for 5 s or more. Operation  Make sure that the switching frequency or speed is within the specified range. 1. If the switching speed is extremely slow, the contact may not be switched smoothly, which may result in a contact failure or contact welding. 2. If the switching speed is extremely fast, switching shock may damage the Switch soon. If the switching frequency is too high, the contact may not catch up with the speed. The rated permissible switching speed and frequency indicate the switching reliability of the Switch. The life of a Switch is determined at the specified switching speed. The life varies with the switching speed and frequency even when they are within the permissible ranges. In order to determine the life of a Switch model to be applied to a particular use, it is best to conduct an appropriate durability test on some samples of the model under actual conditions.  Make sure that the actuator travel does not exceed the permissible OT position. The operating stroke must be set to 70% to 100% of the rated OT. Precautions for Correct Use Mounting Location  Do not use the switch alone in atmospheres such as flammable or explosive gases. Arcing and heat generation associated with switching may cause fires or explosions.  Switches are generally not cons tructed with resistance against water. Use a protective cover to prevent direct spraying if the switch is used in locations subject to sp lashing or spurting oil or water, dust adhering.  Install the switch in a location that is not directly subject to debris and dust from cutting. The actuator and the switch body must be protected from accumulated cutting debris and dirt.  Do not use the switch in locations subject to hot water (greater than 60°C) or in water vapor.  Do not use the switch outside the specified temperature and atmospheric conditions. The permissible ambient temperature depends on the model. (Refer to the specifications in this catalog.) Sudden thermal changes may cause thermal shock to distort the switch and result in faults.  Mount a cover if the switch is to be installed in a location where worker inattention could result in incorrect operation or accidents.  Subjecting the switch to continuous vibration or shock may result in contact failure or faulty operation due to abrasion powder and in reduced durability. Excessive vibration or shock will cause the contacts to operate malfunction or become damaged. Mount the switch in a location that is not subject to vibration or shock and in a direction that does not subject the switch to resonance.  If silver contacts are used with relatively low frequency for a long time or are used with microload s, the sulfide coating produced on the contact surface will not be brok en down and contact faults will result. Use a microload switch that uses gold contacts.  Do not use the switch in atmospheres with high humidity or heat or in harmful gases, such as sulfide gas (H 2S, SO 2), ammonia gas (NH3), nitric acid gas (HNO 3), or chlorine gas (Cl 2). Doing so may impair functionality, such as with damage due to contacting faults or corrosion.  The switch includes contacts. If the switch is used in an atmosphere with silicon gas, arc energy may cause silicon oxide (SiO2) to accumulate on the contacts and result in contact failure. If there is silicon oil, silicon fill ing, silicon wiring, or other silicon products in the vicinity of the switch, use a contact protection circuit to limit arcing and remove the source of the silicon gas. Panel-mounting model (A-20GQ@)  If a Switch is side-mounted with screws, remove the hexagonal nut of the actuator.  If a Switch is side-mounted and secured with screws, make sure that the angle or speed of the actuating object is not excessively large or too high, otherwise the Switch may be damaged.  If a Switch is panel-mounted, pay utmost attention to make sure that the actuating speed or OT di stance is not excessively high or large. Not doing so may damage the Switch. Terminal box Terminal box Incorrect Correct Incorrect Correct Incorrect Separate the installation lo- cation from heat sources. Correct Correct (preventing malfunctions) Incorrect

Global - http://www.omron.com USA - http://www.components.omron.com Cat. No. X303-E-1 Printed in USA OMRON ELECTRONIC COMPONENTS LLC 55 E. Commerce Drive, Suite B Schaumburg, IL 60173 847-882-2288 11/10 Specifications subject to change without notice All sales are subject to Omron Electronic Components LLC standard terms and conditions of sale, which ALL DIMENSIONS SHOWN ARE IN MILLIMETERS. To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.