K Microelettrica Catalogue | Mobility | Products | Components | Railway Contactors | LTX Series
LTX Series
LTX contactors are designed for applications up to 4 kV with the highest breaking capacity. Three different configurations of standard terminal layout allow several installation options. The LTX line is protected by an international patent.
- Ratings up to 4000 VDC/AC and up to 1050 A/pole.
- Multi-pole combination up to 2 poles.
- Category / Operational Frequency class : A2 / C2.
- Insulation level up to OV4, PD3A.
- 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.
- The newest extra heavy duty line for up to 4 kV systems
- Highest breaking performance
- High electrical durability
- Easy installation
- Extended supply auxiliary voltage with power saving system
- Easily coupled with LTK disconnector for compact LRU
- 3 different terminal configurations: S, E and B
- Control Voltages: 24 – 36 – 48 – 72 – 110 Vdc
- 2NO+2NC IP67 aux contacts (a0, b0 and a1, b1)
- Low voltage Burndy connector
- Voltage suppressor on LV coil (Varistor)
- Up to 4 auxiliary contacts blocks (1NO+1NC)
- Gold plated tips of auxiliary contact (for extremely low current)
- Low voltage connectors (any-brands compability)
Series Size Poles |
LTX 1kV 900 1NO |
LTX 2kV 900 1NO |
LTX 3kV 900 1NO |
LTX 1kV 900 2NO |
LTX 2kV 900 2NO |
LTX 3kV 900 2NO |
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Application Type | Line Contactor DC/DC Converter Input Contactor Coaches Power Supply Contactor |
Line Contactor DC/DC Converter Input Contactor Coaches Power Supply Contactor |
Line Contactor DC/DC Converter Input Contactor Coaches Power Supply Contactor |
Line Contactor DC/DC Converter Input Contactor Coaches Power Supply Contactor |
Line Contactor DC/DC Converter Input Contactor Coaches Power Supply Contactor |
Line Contactor DC/DC Converter Input Contactor Coaches Power Supply Contactor |
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Rated Operational Voltage (up to) |
[V] | 900 | 1800 | 3600 | 900 | 1800 | 3600 | |
Thermal Current @ 75°C | [A] | 900 | 900 | 900 | 900 | 900 | 900 | |
Short Circuit Withstand Current for 5ms |
[kA] | 12 | 12 | 12 | 12 | 12 | 12 | |
DC Rated Operational Current (L/R=15 ms) |
900 Vdc | [A] | 1100 | - | - | 1100 | - | - |
1800 Vdc | [A] | - | 1000 | - | - | 1000 | - | |
3600 Vdc | [A] | - | - | 750 | - | - | 750 | |
DC Max Breaking Current (L/R=5 ms) |
900 Vdc | [A] | 2000 | - | - | 2000 | - | - |
1800 Vdc | [A] | - | 1800 | - | - | 1800 | - | |
3600 Vdc | [A] | - | - | 1500 | - | - | 1500 | |
AC Rated Operational Current (cosphi = 0.8) |
900 Vac | [A] | 1200 | - | - | 1200 | - | - |
1800 Vac | [A] | - | 1100 | - | - | 1100 | - | |
3600 Vac | [A] | - | - | 1000 | - | - | 1000 | |
AC Max Breaking Current (cosphi = 0.8) |
900 Vac | [A] | 2500 | - | - | 2500 | - | - |
1800 Vac | [A] | - | 2000 | - | - | 2000 | - | |
3600 Vac | [A] | - | - | 1800 | - | - | 1800 | |
Dimensions | Length L | [mm] | 301 | 320 | 360 | 300 | 320 | 360 |
Width W | [mm] | 113 | 113 | 114 | 197 | 197 | 197 | |
Height H | [mm] | 344 | 359 | 439 | 345 | 360 | 440 | |
Weight | [kg] | 10 | 11 | 15.5 | 20 | 22 | 31 |