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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Description Datasheet Availability Pricing (IDR) Filter the results in the table by unit price based on your quantity.
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
2.174On Order
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 420 VAC 560 VDC 748 V 1.12 kV 20 mm 10 kA 320 J 600 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
2.040Expected 01/09/2026
Min.: 1
Mult.: 1
: 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 THERMALLY PROTECTED VARISTOR 20MM
Datasheet
6.595Expected 14/10/2026
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 625 VAC 825 VDC 1 kV 1.98 kV 20 mm 10 kA 480 J 175 pF - 55 C + 85 C Bulk
Littelfuse Varistors RADIAL 34MM 275VAC
Datasheet
180Expected 09/11/2026
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 275 VAC 369 VDC 473 V 730 V 34 mm 40 kA 550 J 4.5 nF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
1.185Expected 23/11/2026
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 125 VAC 150 VDC 198 V 300 V 14 mm 6 kA 35 J 1.1 nF - 55 C + 85 C Bulk
Littelfuse Varistors 14MM 300V STRAIGHT INLINE
Datasheet
1.200Expected 01/10/2026
Min.: 1
Mult.: 1
: 400

TMOV Reel, Cut Tape
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
300Stock Available
More Info Available
Min.: 1
Mult.: 1
: 300

TMOV MOVs PCB Mount Radial 275 VAC 430 VDC 710 V 20 mm 10 kA 900 pF - 55 C + 85 C Reel, Cut Tape
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 34MM
Datasheet
720Stock 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 3.3 nF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 34MM
Datasheet
Non-Stocked Lead-Time 15 Weeks
Min.: 180
Mult.: 60

TMOV MOVs PCB Mount Radial 180 VAC 240 VDC 488 V 34 mm 40 kA 330 J 6.8 nF - 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 11.5 nF - 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 6.8 nF - 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 6.5 nF - 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 2.7 nF - 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 2.5 nF - 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 2.25 nF - 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 2.1 nF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
Non-Stocked Lead-Time 19 Weeks
Min.: 1.500
Mult.: 500
: 500

TMOV MOVs PCB Mount Radial 125 VAC 180 VDC 300 V 14 mm 6 kA 1.1 nF - 55 C + 85 C Reel
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
Non-Stocked Lead-Time 19 Weeks
Min.: 1.200
Mult.: 600

TMOV Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
Non-Stocked Lead-Time 19 Weeks
Min.: 1.500
Mult.: 500
: 500

TMOV MOVs PCB Mount Radial 130 VAC 205 VDC 340 V 14 mm 6 kA 1 nF - 55 C + 85 C Reel
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
Non-Stocked Lead-Time 19 Weeks
Min.: 1.500
Mult.: 500
: 500

TMOV MOVs PCB Mount Radial 140 VAC 220 VDC 360 V 14 mm 6 kA 900 pF - 55 C + 85 C Reel
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
Non-Stocked Lead-Time 19 Weeks
Min.: 1.500
Mult.: 500
: 500

TMOV MOVs PCB Mount Radial 150 VAC 240 VDC 395 V 14 mm 6 kA 800 pF - 55 C + 85 C Reel
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
Non-Stocked Lead-Time 19 Weeks
Min.: 1.500
Mult.: 500
: 500

TMOV MOVs PCB Mount Radial 175 VAC 270 VDC 455 V 14 mm 6 kA 700 pF - 55 C + 85 C Reel
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
Non-Stocked Lead-Time 19 Weeks
Min.: 1
Mult.: 1
: 500

TMOV Reel, Cut Tape
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
Non-Stocked Lead-Time 19 Weeks
Min.: 1.200
Mult.: 600

TMOV MOVs PCB Mount Radial 200 VAC 530 V 14 mm 6 kA 630 pF - 55 C + 85 C Bulk