Heater contactor

28 Jul

Heater contactor

Heater contactors manage the duty cycle of heaters, by switching them on and off according to a variable pattern related to the heat demand. Heating systems are supplied with high voltage, typically 3kV DC or 1kV AC (supplied by a secondary winding of the main transformer).

This application requires a challenging combination of high thermal current and electrical durability. We offer a wide variety of designs to fit most installation requirements.

  • High making and breaking capability
  • Suitable for heavy-duty electrical and mechanical operating conditions
View LTC Series
View LTHS Series
View LTHH/LTE/LTP Series
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Series
Size
Poles


 LTCS
250
1NO

 LTCH
250
1NO

 LTCS
300
1NO

 LTCH
300
1NO

 LTHS
320
1NO

 LTHH
100
1NO
Rated Operational Voltage
(up to)		 [V] 1800 1800 1800 1800 1800 3600
Thermal Current @ 75°C [A] 200 200 270 270 320 100
Short Circuit Withstand Current for 5ms [kA] 5 5 5 5 8 4
Fault Making Capacity [kA] 2.4 2.4 2.4 2.4 4.8 2.4
DC
Rated Operational Current
(L/R=15 ms)		 900 Vdc [A] 65 100 65 100 300 460
1800 Vdc [A] 16 20 16 20 150 230
3600 Vdc [A] - - - - - 110
DC
Max Breaking Current
(L/R=5 ms)		 900 Vdc [A] 130 150 130 150 750 500
1800 Vdc [A] 25 30 25 30 275 250
3600 Vdc [A] - - - - - 125
AC
Rated Operational Current
(cosphi = 0.8)		 900 Vac [A] 65 100 65 100 300 460
1800 Vac [A] 16 20 16 20 150 230
3600 Vac [A] - - - - - 110
AC
Max Breaking Current
(cosphi = 0.8)		 900 Vac [A] 160 200 160 200 750 660
1800 Vac [A] 80 100 80 100 275 360
3600 Vac [A] - - - - - 180
Dimensions Length L [mm] 140 154 140 154 221 377
Width W [mm] 89 89 89 89 86 60
Height H [mm] 157 177 157 177 301 274
Weight [kg] 2 2.2 2 2.2 4.9 6.5