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      Home ? Product Center ? Other ? Switch ? Push_button Switch ? R2991 ? 
      

      
    
      
        
    
      
    
      
        The push button switch, also known as the control button, is a low-voltage electrical appliance that is manually and generally automatically reset. The button is usually used to issue a start or stop command in the circuit to control the on and off of the electrical coil current of the electromagnetic starter, contactor, relay, and the like.

      The push button switch is a kind of electric device that is used to switch on and off the small current circuit when the action is released. Generally used in control circuits with AC and DC voltages below 440V and currents less than 5A.
      
    
      

      

      
    

      

      
    
      Key Switches R2991
      

      

      

	
      
	
	
      •  Contact Resistance：50mΩ Max.Initial
      
	
      •  Insulation Resistance：10GΩ Min.@1000VDC
      
	
      •  Dielectric Strength：500VAC for 1 minute
      
	
      •  Operation Temperation：-40℃ to 95℃
      
	
      •  Storage Temperature：-40℃ to 95℃
      
	
      •  Electrical Rating：30mA@28VDC
      
	
      •  Electrical Life：20,000 cycles
      
	
      •  Full Travel：2.0mm
      
	
      •  Contact Arrangement：SPST,SPDT
      
	
      •  Actuation Force：ST:490 grams
      
	
      •  DT 1st Position：600 grams
      
	
      •  DT 2nd position：1150 grams
      
	      		
	Key Switches R2991 Figure
	Key Switches R2991 Structure Diagram
	
      
      

      

       
      

      
                                                                                            
    
    
      
        
      
            
      
                                Part Number	
                                Contact Resistance
                                Insulation Resistance
                                Dielectric Strength
                                Operation Temp.
                                Storage Temp.
                                Electrical Life
                                Full Travel
                                Contact Arrangement
                                Download
            
      
                                    
      
                                R2991-1
                                50mΩ Max.Initial
                                10GΩ Min.@1000VDC
                                500VAC for 1 minute
                                -40℃ to 95℃
                                -40℃ to 95℃
                                20,000 cycles
                                2.0mm
                                SPST,SPDT
                                
                    NULL                
            
      
                                    
      
                                R2991-2
                                50mΩ Max.Initial
                                10GΩ Min.@1000VDC
                                500VAC for 1 minute
                                -40℃ to 95℃
                                -40℃ to 95℃
                                20,000 cycles
                                2.0mm
                                SPST,SPDT
                                
                    NULL                
            
      
                    
      
    
      
            
      








      
	
       
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