K Microelettrica Catalogue | Mobility | Products | Components | Railway Contactors | LTHS Series
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.
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 | |
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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 |
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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