Surge Protection Components for OEM Designers

Overvoltage Protection - Thermally Protected Metal-Oxide Varistor

TPMOV® UL Type 1 - 34MM - 75kA

50% More Surge Capacity – Same Footprint Mersen’s patented TPMOV technology eliminates common failure modes that occur in the field with standard metal oxide varistors. Internally the TPMOV is comprised of a voltage clamping device and a disconnecting apparatus that monitors the status of the metal oxide disk making the TPMOV a fail-safe device. In the event of an overvoltage breakdown the metal oxide disk is securely disconnected from the system power by an arc shield. Upon failure the TPMOV is also equipped with a visual pin indicator as well as a normally open micro-switch providing remote indication, if applicable. The TPMOV7 is rated for 75kA - 8/20μs peak surge current and is available for maximum continuous operating voltages (MCOV) from 150V to 320VAC.



  • Industry leading, patented, TPMOV® Technology now available with 75kA surge capacity
  • Same footprint as Mersen 50kA TPMOV for drop-in design
  • Replace (3) parallel 50kA TPMOVs with (2) parallel 75kA TPMOVs
  • Same reliable performance with enhanced rating


  • Voltage Range (VAC) 150 - 320 VAC
  • Mounting PCB
  • Connection Terminal Type Solder
  • Body Material PET (Polyethelene Terphthalate)
  • Materials Contact Tin-plated Copper
  • SCCR 200 kA
  • Operating Temp °C (Min/Max) -40 to +85 °C
  • Storage Temp °C (Min/Max) -40 to +85 °C
  • Nominal discharge current 20 kA
  • Number of Poles 1
  • Standards ANSI/UL 1449 4th Edition, Type 1 Component Assembly SPD, File E210793
  • Application Surge protective devices and systems: AC / DC distribution systems, High voltage power supplies, Telecommunications equipment, Motor control systems, Computer related products, PLC applications, Power transfer switches
  • ROHS Compliant Yes
  • Lead Free Consult Technical Services
  • CE conformity Consult Technical Services


  • 150TPMOV7SL
  • 320TPMOV7SL


  • CAD Drawings

    • Drawing 702105-TPMOV7SL-150VAC :   PDF (64 KB) DXF (215 KB) STP (10.9 MB)
    • Drawing 702105-TPMOV7SL-320VAC :   PDF (64 KB) DXF (215 KB) STP (11.4 MB)



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