LST Series -

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The LST Varistor Series is constructed with Littelfuse’s renowned thermally protected varistor technology (TMOV). The built-in thermal disconnecting function and electric arc shield provides additional protection to prevent catastrophic failure and fire hazard even under the extreme circumstances of varistor end-of-life or abnormal overvoltage conditions. It is specifically designed for Type 1 and Type 2 Surge Protective Devices (SPDs).

Features

  • 200 kA SCCR, 20 kA In, UL1449 Type 4 recognized component assembly 
  • Same footprint and PCB layout for Imax 50 kA and 75 kA options 
  • Mechanically triggered AC and DC rated micro-switch with Normally Open or Normally Closed options for remote indication/monitoring circuit 
  • Visual tab option to display LST working status 
  • RoHS compliant, Lead-free, and Halogen-free

Benefits

  • Facilitate meeting UL1449 listed Type 1 or Type 2 standards 
  • Same PCB layout/design for 50 kA and 75 kA Imax rated SPDs 
  • More flexibilities/options for designing an isolated remote indication/monitoring circuit 
  • Clear indication for technician/engineer to replace EOL product to continue surge protection for the end product 
  • Environment-friendly

Access specifications, certifications, check availability and order parts below

Catalog #VMAX AC (V)VMAX DC (V)(ITM 1xAmps (A)Vc (V)PolarityPartner ECAD ModelsStockSamplesCompare
LST1505VL2NT115020050000600Bi-directionalLST1505VL2NT1CheckOrder
LST1507VL2NT115020075000600Bi-directionalLST1507VL2NT1CheckOrder
LST1805VL2NT118024050000800Bi-directionalLST1805VL2NT1CheckOrder
LST1807VL2NT118024075000800Bi-directionalLST1807VL2NT1CheckOrder
LST2755VL2NT127535050000900Bi-directionalLST2755VL2NT1CheckOrder
LST2757VL2NT127535075000900Bi-directionalLST2757VL2NT1CheckOrder
LST3205VL2NT1320420500001000Bi-directionalLST3205VL2NT1CheckOrder
LST3207VL2NT1320420750001000Bi-directionalLST3207VL2NT1CheckOrder
LST3855VL2NT1385510500001500Bi-directionalLST3855VL2NT1CheckOrder
LST3857VL2NT1385510750001500Bi-directionalLST3857VL2NT1CheckOrder
LST4205VL2NT1420560500001500Bi-directionalLST4205VL2NT1CheckOrder
LST4207VL2NT1420560750001500Bi-directionalLST4207VL2NT1CheckOrder
LST5105VL2NT1510675500001500Bi-directionalLST5105VL2NT1CheckOrder
LST5107VL2NT1510675750001500Bi-directionalLST5107VL2NT1CheckOrder
LST5505VL2NT1550710500001500Bi-directionalLST5505VL2NT1CheckOrder
LST5507VL2NT1550710750001500Bi-directionalLST5507VL2NT1CheckOrder
LST6905VL2NT1690890500002000Bi-directionalLST6905VL2NT1CheckOrder
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s)
LST3205VL2NT1 SPD Thermally Protected Varistor 50KA RoHS No 10/06/2020 PbFree No 10/06/2020 CoC_RoHS10_LST3205VL2NT1_09-21-2020 REACH209_Declaration_LST3205VL2NT1_09-21-2020 Yes
10/06/2020
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