TMOV Thermally Protected Varistors

Littelfuse TMOV Thermally Protected Varistors are radially leaded metal oxide varistors (MOVs) with a thermally activated element designed to open during overheating. The integrated thermal element and the enclosure design work together to facilitate surge-protection module compliance to UL1449. These performance capabilities of Littelfuse TMOV varistors serve cord or permanently connected applications. These Littelfuse varistors offer quick thermal response due to the proximity of the thermal element to the MOV body. This integrated configuration provides the added benefit of lower inductance than most discrete solutions.

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Qty. RoHS ECAD Model Series
Product
Mounting Style
Termination Style
Voltage Rating AC
Voltage Rating DC
Varistor Voltage
Clamping Voltage
Diameter
Peak Surge Current
Surge Energy Rating
Capacitance
Minimum Operating Temperature
Maximum Operating Temperature
Packaging
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
26In Stock
1,200Expected 2026-06-03
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 510 VAC 902 VDC 902 V 1.355 kV 20 mm 10 kA 325 J 350 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
1,039In Stock
1,200Expected 2026-05-06
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 550 VAC 715 VDC 1.001 kV 1.5 kV 20 mm 10 kA 360 J 300 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
744In Stock
1,200Expected 2026-04-13
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 625 VAC 1.1 kVDC 1.1 kV 1.65 kV 20 mm 10 kA 400 J 250 pF - 55 C + 85 C Bulk
Littelfuse Varistors 115V 20KA SQ 25MM PB FREE 25S
Datasheet
126In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 125 VAC 150 VDC 198 V 295 V 25 mm 20 kA 170 J 3200 pF - 55 C + 85 C Bulk
Littelfuse Varistors 320V 20KA SQ 25MM 25S ROHS/PB FREE
Datasheet
162In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 320 VAC 420 VDC 561 V 825 V 25 mm 20 kA 390 J 1080 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
1,485Expected 2026-03-10
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 460 VAC 610 VDC 825 V 1.24 kV 20 mm 10 kA 360 J 200 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
1,200Expected 2026-05-15
Min.: 1
Mult.: 1
Reel: 300

TMOV MOVs PCB Mount Radial 460 VAC 610 VDC 825 V 1.24 kV 20 mm 10 kA 360 J 200 pF - 55 C + 85 C Reel, Cut Tape
Littelfuse Varistors 175V 20KA SQ 25MM PB FREE 25S
Datasheet
800Expected 2026-06-08
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 175 VAC 225 VDC 243 V 450 V 25 mm 20 kA 250 J 1900 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
300Stock Available
More Info Available
Min.: 300
Mult.: 300
Reel: 300

TMOV MOVs PCB Mount Radial 275 VAC 430 VDC 710 V 20 mm 10 kA 900 pF - 55 C + 85 C Reel
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 34MM
Datasheet
900Stock Available
More Info Available
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 385 VAC 506 VDC 682 V 1.005 kV 34 mm 40 kA 800 J 3300 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 34MM
Datasheet
Non-Stocked Lead-Time 13 Weeks
Min.: 180
Mult.: 60

TMOV MOVs PCB Mount Radial 180 VAC 240 VDC 488 V 34 mm 40 kA 330 J 6800 pF - 55 C + 85 C Bulk
Littelfuse Varistors 25mm 750V Bi-directional
Datasheet
Non-Stocked Lead-Time 7 Weeks
Min.: 800
Mult.: 80

TMOV MOVs PCB Mount Radial 750 VAC 970 VDC 1.08 kV to 1.32 kV 1.95 kV 20 kA 670 J 460 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 180
Mult.: 60

TMOV MOVs PCB Mount Radial 125 VAC 150 VDC 305 V 34 mm 40 kA 0.0115 uF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 34MM
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 180
Mult.: 60

TMOV MOVs PCB Mount Radial 180 VAC 240 VDC 488 V 34 mm 40 kA 6800 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 34MM
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 180
Mult.: 60

TMOV MOVs PCB Mount Radial 200 VAC 265 VDC 540 V 34 mm 40 kA 6500 pF - 55 C + 85 C Bulk
Littelfuse Varistors Industrial lead-free 34S
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 180
Mult.: 60

TMOV Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 34MM
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 180
Mult.: 60

TMOV MOVs PCB Mount Radial 480 VAC 640 VDC 1.24 kV 34 mm 40 kA 2700 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 34MM
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 180
Mult.: 30

TMOV MOVs PCB Mount Radial 510 VAC 675 VDC 1.35 kV 34 mm 40 kA 2500 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 34MM
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 180
Mult.: 30

TMOV MOVs PCB Mount Radial 550 VAC 700 VDC 1.415 kV 34 mm 40 kA 2250 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 34MM
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 180
Mult.: 30

TMOV MOVs PCB Mount Radial 620 VAC 800 VDC 1.589 kV 34 mm 40 kA 2100 pF - 55 C + 85 C Bulk
Littelfuse Varistors 115Vac 150Vdc 34mm SQ
Datasheet
Non-Stocked
Min.: 120
Mult.: 24

34S MOVs PCB Mount Radial 125 VAC 150 VDC 202 V 305 V 40 kA 280 J 0.0115 uF - 45 C + 75 C Bulk
Littelfuse Varistors 115Vac 150Vdc 34mm SQ Non-Iso
Datasheet
Non-Stocked
Min.: 120
Mult.: 24

34S Bulk
Littelfuse Varistors 130Vac 175Vdc 34mm SQ
Datasheet
Non-Stocked
Min.: 120
Mult.: 24

34S MOVs PCB Mount Radial 130 VAC 175 VDC 228 V 345 V 40 kA 310 J 0.01 uF - 45 C + 75 C Bulk
Littelfuse Varistors 130Vac 175Vdc 34mm SQ Non-Iso
Datasheet
Non-Stocked
Min.: 120
Mult.: 24

34S Bulk
Littelfuse Varistors 150Vac 200Vdc 34mm SQ
Datasheet
Non-Stocked
Min.: 120
Mult.: 24

34S MOVs PCB Mount Radial 150 VAC 200 VDC 268 V 405 V 40 kA 360 J 0.08 uF - 45 C + 75 C Bulk