Vacuum Interrupters (VI)
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  • Simplified arc quenching method
  • Simplified construction and high quality
  • No evacuation tube
  • Compact body


Production range:

  • 7.2kV ~ 72kV - 630A ~ 3150A - 20kA ~40kA (for Circuit Breaker)
  • 7.2kV ~ 36kV - 400A, 630A - 3kA / 4kA (for Contactor)
Vacuum Interrupters for Circuit Breaker <50Hz to 60Hz>
Rated
Voltage		 Rated
lightning
impulse
voltage		 Power
frequency
withstand
Voltage		 Rated
Current		 Short circuit breaking current with
at least 30~40% DC component and
Interrupter (Outdiameter-Style)
kV kV kV A 12.5kA 16kA 20kA 25kA 31.5kA 40kA 50kA
7.2 60 20 630 M20QC
(52-A)		            
800/1250       M30RA
(94-A)		      
1600/2000         M40SC
(94-A)		    
2500/3150           M50TC
(110-A)		  
12 75 28 630 M31QC
(60-A)		 M52QC
(65-B)		   MA61RC**
(94-B)		      
800/1250     M41RC
(73-B)		 M51RC
(82-B)		      
1600/2000         M71SC
(94-B)		 M81SC
(110-B)		  
2500/3150           M81TC
(132-B)		 MA131TC
(150-B)
15 95 38 630 M31QC
(60-A)		 M52QC
(65-B)		          
800/1250       MA61RC
(94-B)		      
1600/2000         M71SC
(94-B)		 M81SC
(110-B)		  
2500/3150           M81TC
(132-B)		 MA131TC
(150-B)
17.5/24 95/125 38/50 630 M52QC*
(65-B)		            
800/1250       M102R
(94-B)		      
1600/2000       M102S
(94-B )		      
2500/3150           M203TCB*
(120-C)		  
36 175 80 630 M83QC*
(65-B)		            
800/1250              
1600/2000       M163SC
(94-C 120-B)		      
2500/3150         M203TCB*
(120-C)		 M253TC*
(132-C)
(150-B) 		 
* Additional external insulation necessary
** Capacitor Switching (Back-to-Back)

Vacuum Interrupters for Load Break Switch
Rated
Voltage		 Rated
lightning
impulse
voltage		 Power
frequency
withstand
Voltage		 Rated
Current		 Short
circuit
making
current		 Vl Type
(Dia.-Style)
kV kV kV A kApeak  
12/15.5 95 35 630 50 M01QC
(52-A)
24/27 125 60 630 50 M02QC
(65-B)

Vacuum Interrupters for Auto-Recloser & Fault Interrupter Switch
Rated
Voltage		 Rated
lightning
impulse
voltage		 Power
frequency
withstand
Voltage		 Rated
Current		 Short
circuit
breaking
current		 Vl Type
(Dia.-Style)
kV kV kV A kA  
15.5 110 50 630 12.5 M31QC
(60-A)
27 125 60 630 12.5 M52QC
(65-B)*
38 150 70 630 12.5 M83QC
(65-B)*

Vacuum Interrupters for Contactor Switch
Rated
Voltage		 Rated
lightning
impulse
voltage		 Power
frequency
withstand
Voltage		 Rated
Current		 Short
circuit
breaking
current		 Vl Type
(Dia.-Style)
kV kV kV A kA  
6.6 45 20 400 4 5G-1
(52-A)
6.6 45 20 600 6 7.5G
(52-A)

Vacuum Interrupters for Mobile Railway Interrupter Switch
Rated
Voltage		 Rated
lightning
impulse
voltage		 Power
frequency
withstand
Voltage		 Rated
Current		 Short
circuit
breaking
current		 Short
circuit
making
current		 Vl Type
(Dia.-Style)
kV kV kV A kA kA  
18/36 170 70(16.6Hz)
70(50/60Hz)		 750(16.6Hz)
450(50/60Hz)		 at 18kV
25(16.6Hz)
at 36kV
25(50/60Hz) 		at 18kV
62.5(16.6Hz) 		163SC
(132-C)
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