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
Max Surge Current
Surge Energy Rating
Capacitance
Minimum Operating Temperature
Maximum Operating Temperature
Packaging
Littelfuse Varistors 175V 20KA SQ 25MM PB FREE 25S
Datasheet
575In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 175 VAC 225 VDC 243 V 450 V 25 mm 20 kA 250 J 1.9 nF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
3,199In Stock
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 250V 20KA SQ 25MM PB FREE 25S
Datasheet
740In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 250 VAC 320 VDC 429 V 640 V 25 mm 20 kA 330 J 1.4 nF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 34MM
Datasheet
165In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 150 VAC 200 VDC 264 V 405 V 34 mm 40 kA 360 J 8 nF - 55 C + 85 C Bulk
Littelfuse Varistors 300V 20KA SQ 25MM PB FREE 25S
Datasheet
645In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 300 VAC 385 VDC 517 V 765 V 25 mm 20 kA 370 J 1.15 nF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
1,165In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 575 VAC 1.568 kV 20 mm 10 kA 275 pF - 55 C + 85 C Bulk
Littelfuse Varistors 625V 20KA SQ 25MM PB FREE 25S
Datasheet
730In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 625 VAC 825 VDC 1.1 kV 1.625 kV 25 mm 20 kA 600 J 550 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
1,671In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 140 VAC 180 VDC 242 V 360 V 14 mm 6 kA 55 J 900 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
1,327In Stock
Min.: 1
Mult.: 1
: 500

TMOV MOVs PCB Mount Radial 200 VAC 312.5 VDC 345 V 520 V 14 mm 6 kA 75 J 630 pF - 55 C + 85 C Reel, Cut Tape
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
4,772In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 250 VAC 320 VDC 429 V 650 V 14 mm 6 kA 100 J 500 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
1,194In Stock
Min.: 1
Mult.: 1
: 300

TMOV MOVs PCB Mount Radial 300 VAC 385 VDC 517 V 775 V 20 mm 10 kA 250 J 800 pF - 55 C + 85 C Reel, Cut Tape
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
583In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 140 VAC 180 VDC 242 V 360 V 20 mm 10 kA 110 J 1.75 nF - 55 C + 85 C Bulk
Littelfuse Varistors 140V 20KA SQ 25MM PB FREE 25S
Datasheet
377In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 140 VAC 180 VDC 242 V 355 V 25 mm 20 kA 210 J 2.5 nF - 55 C + 85 C Bulk
Littelfuse Varistors 230V 20KA SQ 25MM PB FREE 25S
Datasheet
675In Stock
Min.: 1
Mult.: 1

TMOV 585 V 1.5 nF Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
768In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 200 VAC 344 VDC 344 V 530 V 20 mm 10 kA 154 J 1.25 nF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
2,812In Stock
3,000Expected 1/21/2027
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 150 VAC 264 VDC 264 V 395 V 14 mm 6 kA 60 J 800 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
2,354In Stock
Min.: 1
Mult.: 1
: 400

TMOV MOVs PCB Mount Radial 275 VAC 430 VDC 473 V 710 V 14 mm 6 kA 110 J 450 pF - 55 C + 85 C Reel, Cut Tape
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
2,960In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 300 VAC 517 VDC 517 V 775 V 14 mm 6 kA 125 J 400 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
10,630In Stock
10,000Expected 12/14/2026
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 320 VAC 420 VDC 561 V 840 V 14 mm 6 kA 136 J 380 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
1,474In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 385 VAC 505 VDC 682 V 1.025 kV 14 mm 6 kA 150 J 360 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
1,373In Stock
6,000Expected 9/15/2026
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 420 VAC 560 VDC 748 V 1.12 kV 14 mm 6 kA 160 J 300 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
1,389In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 125 VAC 150 VDC 198 V 300 V 20 mm 10 kA 52 J 2.4 nF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
4,473In Stock
6,400On Order
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 150 VAC 200 VDC 264 V 395 V 20 mm 10 kA 120 J 1.6 nF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
2,924In Stock
2,100Expected 10/14/2026
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 275 VAC 350 VDC 473 V 710 V 20 mm 10 kA 190 J 900 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
1,958In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 300 VAC 385 VDC 517 V 775 V 20 mm 10 kA 250 J 800 pF - 55 C + 85 C Bulk