TMOV34S391M - TMOV34S and iTMOV34S Series

Series: TMOV34S and iTMOV34S
Obsolete: 2018 -11-05 Replaced By: TMOV34S391MP Availability: Obsolete


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Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The Littelfuse Industrial TMOV34S® series thermally protected varistor represents a new development in circuit protection.It consists of a 34mm square format varistor element ( MOV) with an integral thermally activated element designed to open in the event of overheating due to abnormal over-voltage, limited current conditions.

Certain TMOV34S devices are offered with a "monitor" lead which may be connected to signalling circuity to indicate if the MOV has been disconnected from the circuit.

TMOV34S Series devices offer quick thermal response due to the close proximity of the integrated thermal element to the MOV body. The integrated configuration also offers lower inductance than most discreet solutions resulting in improved clamping performance to fast over voltage transients.

UL1449 3rd Edition approval of TMOV34S Series is currently pending related to the integrated thermal element of this series. Contact your Littelfuse product representative to discuss alternatives and for additional information.

  • US patent for thermally protected MOV - Patent #US6636403
  • High peak current rating up to 40kA
  • -55 to +85 degree C operating temperature range
  • RoHS Compliant and Lead-free
  • Alternative design available with narrow 3mm wide monitor (right) lead
  • Alternative design available with 2 leads only (no monitor lead)

  • SPD (TVSS) Products
  • AC Panel Protection Modules
  • AC Line Power Supplies
  • AC Power Meters
  • UPS (Uninterruptable Power Supply)
  • Inverters
  • AC/DC power supplies
  • DIN Rail

TUVicon TUVR_J50472797

CRUicon UR_VZCA2_E320116

URicon UR_VZCA2_E320116_101444478

cURicon cUR_VZCA8_E320116_101444478

pdficon Varistors TMOV®34S Datasheet

pdficon Circuit Protection Technology Application Matrix

Littelfuse is the world leader in the design and manufacturing of fuses for the automotive industrial handheld computer and telecom markets...

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pdficon Circuit Protection Products Selection Guide

Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
TMOV34S391M THERMALLY PROTECTED VARISTOR 34MM RoHS No 10/01/2005 PbFree No 10/01/2005 CoC_RoHS10_TMOV34S391M REACH_SVHC Declaration_TMOV34S391M No
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