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 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 1400 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 34MM
Datasheet
175In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 150 VAC 200 VDC 264 V 405 V 34 mm 40 kA 360 J 8000 pF - 55 C + 85 C Bulk
Littelfuse Varistors 625V 20KA SQ 25MM PB FREE 25S
Datasheet
780In 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 34 MM DISC
Datasheet
246In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 275 VAC 369 VDC 473 V 730 V 34 mm 40 kA 550 J 4500 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
1,755In 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
1,387In 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 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 1900 pF - 55 C + 85 C Bulk
Littelfuse Varistors 300V 20KA SQ 25MM PB FREE 25S
Datasheet
755In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 300 VAC 385 VDC 517 V 765 V 25 mm 20 kA 370 J 1150 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
1,107In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 460 VAC 610 VDC 825 V 1.24 kV 14 mm 6 kA 180 J 220 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 14MM
Datasheet
998In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 130 VAC 170 VDC 225.5 V 340 V 14 mm 6 kA 50 J 1000 pF - 55 C + 85 C Bulk
Littelfuse Varistors 140V 20KA SQ 25MM PB FREE 25S
Datasheet
387In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 140 VAC 180 VDC 242 V 355 V 25 mm 20 kA 210 J 2500 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
854In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 140 VAC 180 VDC 242 V 360 V 20 mm 10 kA 110 J 1750 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
918In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 175 VAC 225 VDC 297 V 455 V 20 mm 10 kA 135 J 1400 pF - 55 C + 85 C Bulk
Littelfuse Varistors 385V 20KA SQ 25MM PB FREE 25S
Datasheet
601In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 385 VAC 505 VDC 682 V 1.01 kV 25 mm 20 kA 430 J 900 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
600In Stock
Min.: 1
Mult.: 1
: 300

TMOV MOVs PCB Mount Radial 385 VAC 620 VDC 1.025 kV 20 mm 10 kA 700 pF - 55 C + 85 C Reel, Cut Tape
Littelfuse Varistors 230V 20KA SQ 25MM PB FREE 25S
Datasheet
735In Stock
Min.: 1
Mult.: 1

TMOV 585 V 1500 pF Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
1,096In Stock
1,200Expected 02/07/2026
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 14MM
Datasheet
15,675In Stock
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
5,088In 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 14MM
Datasheet
10,297In 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
1,445In Stock
Min.: 1
Mult.: 1
: 400

TMOV MOVs PCB Mount Radial 385 VAC 620 VDC 682 V 1.025 kV 14 mm 6 kA 150 J 360 pF - 55 C + 85 C Reel, Cut Tape
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
Product Comments
1,292In Stock
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 130 VAC 170 VDC 225.5 V 340 V 20 mm 10 kA 100 J 1900 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
2,726In Stock
2,000On Order
Min.: 1
Mult.: 1

TMOV MOVs PCB Mount Radial 150 VAC 200 VDC 264 V 395 V 20 mm 10 kA 120 J 1600 pF - 55 C + 85 C Bulk
Littelfuse Varistors THERMALLY PROTECTED VARISTOR 20MM
Datasheet
3,098In Stock
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
2,511In 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