Roof Disconnector

AC Railway vehicles with more than one pantograph typically adopt a 1-pole disconnector or change-over disconnector. This is to configure the roof line and downstream circuits to increase redundancy and reliability.

You can apply an Earthing version for higher safety. On DC-powered vehicles, the roof disconnector can be a compact indoor changeover or disconnector integrated into a HV box.

We offer a wide variety of designs fitting most installation requirements.

  • High short circuit withstand capacity
  • Compact size
  • Outdoor application
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Series
Size
Poles
LTPD
2000
1NO

LTSD
2000
1NO

LTKS
900
1NO | 1CO

  |  
LTKE
900
1NO | 1CO

  |  
LTMP
1000
1NO

LTMP
1000
1CO

LTMP
2000
1NO

LTMP
2000
1CO

LTHMD
800
1NO

LTHMU
800
1NO

LTHMD
800
1CO

LTHMD
1500
1NO

LTHMU
1500
1NO

LTHMD
1500
1CO

LTHMD
3000
1NO | 1CO

|
Rated Insulation Voltage @
OV3 | PD3
[kV] 27.5 *** 27.5 *** 4800 4800 4000 4000 4000 4000 4000 4000 4000 4000 4000 4000 4000
Thermal Current [A] 2000 * 2000 * 900 ** 900 ** 1000 ** 1000 ** 2000 ** 2000 ** 720 ** 720 ** 720 ** 1350 ** 1350 ** 1350 ** 2700
Short Circuit Withstand Current for 60ms [kA] 70 70 60 60 120 120 180 180 90 90 90 140 140 100 140
Dimensions Length L [mm] 630 830 353 322 458 459 458 459 450 442 445 445 441 445 177 | 177
Width W [mm] 280 460 120 120 130 130 178 130 140 173 142 140 173 140 177 | 177
Height H [mm] 613 598 284 284 352 352 352 352 255 268 302 257 268 302 253 | 314
Weight [kg] 45 70.8 11 11 10 15 15 18 8.6 10.5 11 9.8 11 11 14 | 18

* at 40°C

** at 75°C

*** for our products LTPD and LTSD the insulation overvoltage and the pollution degree is OV4/PD4