LTK Series

LTK Series

LTK disconnectors combine the Microelettrica’s heavy-duty and well-known technology of our high power circuits with the most advanced control & command circuit technology. This results in a compact and versatile solution for applications where high voltages (up to 4 kV) and thermal currents are required. The LTK line is protected by an International patent.

  • Ratings up to 4000 VDC/AC and up to 1050 A/pole applications
  • Single pole or change-over Disconnector
  • Multi-pole combination up to 2 poles
  • Category / Operational Frequency class : A4 / C3
  • Designed for applications up to OV4, PD3A
  • DC coil controlled with power saving electronic board
  • Equipped with low voltage protection
  • Suitable for vertical or horizontal mounting
  • IEC60077 compliant
  • Newest extra heavy duty line for up to 4 kV systems
  • The highest insulation level between the upstream and downstream circuit
  • To avoid cabling, the command circuit exploits the most advanced PCB board technology.
  • Current driving & holding system to always get the same mechanical performances regardless of power supply voltage and temperature fluctuations.
  • Extended working range of power supply over the limits prescribed by standards, with no external DC/DC converter.
  • Easily coupled with LTX contactor for compact LRU.

STANDARD

  • Power terminal configuration: S (IN/OUT opposite sides) and E (IN/OUT same side).
  • Control Voltage: Low voltage range for 24 – 36 – 48 Vdc and High voltage range for 72 – 110 Vdc
  • 3NO + 3NC + 1CO aux contacts
  • Low voltage connector SMS type

 

CUSTOM

  • Low voltage connectors (any-brand compatibility)
Image Image Image Image
Series
Size
Poles

LTKS
900
1NO | 1CO | 1NO+1NC

| |
LTKE
900
1NO | 1CO

|
LTKS
900
2NO | 2CO | 2NO+2NC

| |
LTKE
900
2NO | 2CO

|
Application Type Multisystem Vehicle Configurator
Inverter Isolation
Alternator-Rectifier Disconnector
Roof Disconnector
Multisystem Vehicle Configurator
Inverter Isolation
Alternator-Rectifier Disconnector
Roof Disconnector
Multisystem Vehicle Configurator Multisystem Vehicle Configurator
Rated Insulation Voltage @
OV3/PD3
[V] 4800 4800 4800 4800
Thermal Current @ 75°C [A] 900 900 900 900
Short Circuit Withstand Current for 100ms [kA] 50 50 50(single)/30(series) 50(single)/30(series)
Dimensions Length L [mm] 353 322 400 400
Width W [mm] 120 120 217 214
Height H [mm] 284 284 290 290
Weight [kg] 11 11 20 20