LTHS Series

LTHS contactors are designed for heavy-duty usage in mobility and industrial applications up 2000V. This contactor family features a proven reliability throughout a 40-year service experience in different market applications. Our mechanical and electrical customizations ensure a very high flexibility.

  • Ratings up to 2000 VDC/AC and up to 1600 A/pole applications
  • Multi-pole combination up to 4 poles
  • NO and NC poles
  • Category / Operational Frequency class : A2 / C3
  • Designed for applications up to OV3, PD3
  • Suitable for bi-directional DC or AC current
  • Equipped with low voltage spike protection
  • Vertical or horizontal mounting
  • Suitable for low current interruption
  • IEC60077 and IEC60947-4-1 compliant
  • Offered in 9 sizes to let you choose the smallest required dimensions, and fit any requirements with a catalogue product.
  • High electrical durability guaranteed with ceramic arc-chute
  • Easy maintenance
  • Configurable according customer needs
  • High reliability thanks to long production history
  • Customizable breaking system tailored for any service conditions
  • DC coil controlled with power saving system
  • Indirect blow-out coil without arcing contacts
  • Main contacts with silver alloy tips
  • DC coil supply with 6.35×0.8 mm fast-on terminals
  • Direct Control voltage: 24 – 36 – 48 – 72 – 110 VDC
  • 2 NO + 2 NC silver-plated auxiliary contact blocks, 6.35×0.8 mm Fast-on terminals
  • Voltage suppressor on auxiliary supply (Varistor)
  • Direct or indirect blow-out coil with arcing contacts (*)
  • Special supply voltage type, value and range
  • Auxiliary contacts options:
    • Up to 4 auxiliary contacts blocks
    • Screw terminals on the aux circuit
    • 1 NO + 1 NC or 2 NO versions
    • Gold plated tips (for extremely low currents)
    • IP67
  • Low voltage connectors (any-brand compatibility)
  • Alternative Voltage suppressor on LV coil (Diode + Transzorb)

(*) We recommend these versions in case of applications where a low breaking DC current at high voltage frequently occurs, especially if changes of breaking current direction are expected. Please contacts us to discuss any specific application requirements.

Image Image Image Image Image Image Image
Series
Size
Poles


LTHS
320
1NO*| 2NO | 3NO

| |
LTHS
400
1NO* | 2NO* | 3NO

| |
LTHS
650
1NO | 2NO | 3NO

| |
LTHS
800
1NO* | 2NO | 3NO

| |
LTHS
1250
1NO | 2NO | 3NO

| |
LTHS
1500
1NO | 2NO | 3NO

| |
LTHS
1700
1NO | 2NO

|
Application Type Precharge Contactor​
Motor Isolation Contactor​
AUX Input Contactor​
AUX Output Contactor
Battery Charger Input Contactor​
Battery Charger Output Contactor​
DC/DC Converter Output Contactor
Heater Contactor​
Line Contactor
DC/DC Converter Input Contactor
DC/DC Converter Output Contactor
Line Contactor
DC/DC Converter Input Contactor
DC/DC Converter Output Contactor
Coach Power Supply Contactor​
Line Contactor
DC/DC Converter Input Contactor
DC/DC Converter Output Contactor
Coach Power Supply Contactor​
Line Contactor
DC/DC Converter Input Contactor
DC/DC Converter Output Contactor
Coach Power Supply Contactor​
Line Contactor
DC/DC Converter Input Contactor
DC/DC Converter Output Contactor
Coach Power Supply Contactor​
Line Contactor
DC/DC Converter Input Contactor
DC/DC Converter Output Contactor
Coach Power Supply Contactor​
Rated
Operational
Voltage
(up to)
[V] 1800 1800 1800 1800 1800 1800 1800
Thermal Current
@ 75°C
[A] 320 400 650 800 1200 1250 1500
Short Circuit
Withstand Current
for 5ms
[kA] 8 10 12 12 16 16 25
DC
Rated
Operational
Current
(L/R=15 ms)
900 Vdc [A] 300 - 350(MP) - 400 (HP) 665 1200 1540 1830 1830 1200
1800 Vdc [A] 150 - 175(MP) - 200 (HP) 225 600 750 915 915 600
3600 Vdc [A] - - - - - - -
DC
Max Breaking
Current
(L/R=5 ms)
900 Vdc [A] 750 - 940 (MP) - 1260 (HP) 1160 2000 1750 2500 2500 2000
1800 Vdc [A] 275 - 375 (MP) - 600 (HP) 415 800 800 1350 1350 800
3600 Vdc [A] - - - - - - -
AC
Rated
Operational
Current
(cosphi = 0.8)
900 Vac [A] 300 - 350 (MP) - 400 (HP) 665 1200 1540 1830 1830 1200
1800 Vac [A] 150 175 (MP) - 200 (HP) 225 600 750 915 915 600
3600 Vac [A] - - - - - - -
AC
Max Breaking
Current
(cosphi = 0.8)
900 Vac [A] 750 - 940 (MP) - 1260 (HP) 2000 3200 2300 3750 3750 3200
1800 Vac [A] 275 - 375 (MP) - 600 (HP) 800 1600 1150 1800 1800 1600
3600 Vac [A] - - - - - - -
Dimensions Length L [mm] 300 | 300 | 300 470 | 470 | 470 490 | 490 | 490 490 | 490 | 490 520 | 520 | 520 580 | 580 | 580 585 | 585
Width W [mm] 100 | 140 | 185 115 | 215 | 305 135 | 220 | 315 120 | 220 | 320 135 | 220 | 320 120 | 220 | 310 140 | 240
Height H [mm] 220 - 250 (MP) - 270 (HP) | 220 | 220 330 | 330 | 330 335 | 335 | 335 335 | 335 | 335 350 | 350 | 350 350 | 350 | 350 350 | 350
Weight [kg] 4.8 - 5.2 (MP) - 5.7 (HP) | 8.5 | 13 14 | 19.5 | 28 15 | 28 | 38.5 15 | 28 | 38.5 16 | 27.5 | 42 20 | 31 | 42 22 | 40

*
Normally Closed (NC) poles are available. For further information please
contact us