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All Products > Circuit Protection > Varistors

Littelfuse TCMOV & SMOV Series Thermally Protected Varistors w/Micro-Switch

Littelfuse introduces TCMOV and SMOV Series Thermally Protected Varistors with the micro-switch indicator to help manufacturers meet the requirements specified in UL1449 (3rd edition) for Type 1 or Type 2 Surge Protection Device (SPDs) applications. TCMOV and SMOV Series Thermally Protected Varistors are especially well-suited for surge protection devices, AC panel protection modules, power transfer switches, AC/DC power distribution systems, photovoltaic systems, and cell phone base stations.
-TCMOV34S Series features 34mm2-format varistors that combine high maximum surge capability (50kA) with an integrated thermally active element and offer a short circuit current rating of 200kA. In the event of overheating due to abnormal overvoltage, the TCMOV34S Varistor safely disconnects itself from the circuit. A built-in micro-switch triggered by a mechanical slide indicates when a circuit is completely isolated from the primary circuit.
-SMOV25 and SMOV34 Series Varistors safely disconnect from the circuit in a sustained over-voltage, intermediate current condition as defined by UL1449 (3rd edition). The integrated thermal element is positioned close to the MOV body to allow for a quick thermal response. The varistors offer high peak surge current handling and energy absorption capabilities with an operating voltage range compatible with common AC line voltage (115VAC to 750VAC). A separate micro-switch indicates when the MOV has been disconnected from the circuit. This separate switch isolates the monitoring circuitry from the primary circuit to ensure indicator circuit safety and simplify the user's circuit design.
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Category   Circuit Protection >  Varistors

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Compare up to 20 parts.
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Littelfuse SMOV25S151MP
Enlarge
Littelfuse Varistors 150Vac 200Vdc 25mm SQ
Page 822

Data Sheet
53
In Stock
1: $10.20
10: $9.19
25: $8.37
100: $7.80
250: View



Min.: 1
Mult.: 1
MOV 200 V 150 V 390 V 20 kA 220 J 2300 pF - 45 C to + 75 C Radial Bulk
Littelfuse SMOV34S151MP
Enlarge
Littelfuse Varistors 150Vac 200Vdc 34mm SQ
Page 822

Data Sheet
12
In Stock
1: $20.84
10: $18.92
25: $17.54
50: $16.99
100: View



Min.: 1
Mult.: 1
MOV 200 V 150 V 405 V 40 kA 360 J 80000 pF - 45 C to + 75 C Radial Bulk
Littelfuse TCMOV34S151MP
Enlarge
Littelfuse Varistors 150Vac 200Vdc 34mm SQ
Page 822

Data Sheet
16
In Stock
1: $23.12
5: $22.44
10: $21.43
25: $19.64
50: View



Min.: 1
Mult.: 1
MOV 200 V 150 V 405 V 50 kA 360 J 8000 pF - 45 C to + 75 C Radial Bulk
Littelfuse TCMOV34S271MP
Enlarge
Littelfuse Varistors 275Vac 350Vdc 34mm SQ
Page 822

Data Sheet
20
In Stock
1: $25.22
5: $24.48
10: $23.38
25: $21.43
50: View



Min.: 1
Mult.: 1
MOV 350 V 275 V 730 V 50 kA 550 J 4500 pF - 45 C to + 75 C Radial Bulk
Littelfuse TCMOV34S421MP
Enlarge
Littelfuse Varistors 420Vac 560Vdc 34mm SQ
Page 822

Data Sheet
11
In Stock
1: $27.32
5: $26.52
10: $25.33
25: $23.21
50: View



Min.: 1
Mult.: 1
MOV 560 V 420 V 1130 V 50 kA 910 J 3000 pF - 45 C to + 75 C Radial Bulk
Littelfuse SMOV25S131MP
Enlarge
Littelfuse Varistors 130Vac 170Vdc 25mm SQ
Data Sheet Non-Stocked
70: $9.19
100: $8.37
250: $7.80
500: $7.55
1,000: View



Min.: 70
Mult.: 1
MOV 170 V 130 V 335 V 20 kA 190 J 2800 pF - 45 C to + 75 C Radial Bulk
Littelfuse SMOV25S111MP
Enlarge
Littelfuse Varistors 115Vac 150Vdc 25mm SQ
Data Sheet Non-Stocked
70: $9.19
100: $8.37
250: $7.80
500: $7.55
1,000: View



Min.: 70
Mult.: 1
MOV 150 V 115 V 295 V 20 kA 170 J 3200 pF - 45 C to + 75 C Radial Bulk
Littelfuse SMOV25S181MP
Enlarge
Littelfuse Varistors 175Vac 225Vdc 25mm SQ
Data Sheet Non-Stocked
70: $9.19
100: $8.37
250: $7.80
500: $7.55
1,000: View



Min.: 70
Mult.: 1
MOV 225 V 175 V 450 V 20 kA 250 J 1900 pF - 45 C to + 75 C Radial Bulk
Littelfuse SMOV25S251MP
Enlarge
Littelfuse Varistors 250Vac 320Vdc 25mm SQ
Data Sheet Non-Stocked
70: $10.33
100: $9.41
250: $8.77
500: $8.50
1,000: View



Min.: 70
Mult.: 1
MOV 320 V 250 V 640 V 20 kA 330 J 1400 pF - 45 C to + 75 C Radial Bulk
Littelfuse SMOV25S271MP
Enlarge
Littelfuse Varistors 275Vac 350Vdc 25mm SQ
Data Sheet Non-Stocked
72: $10.13
500: $8.33
1,000: $7.65
2,000: View



Min.: 72
Mult.: 1
MOV 350 V 275 V 700 V 20 kA 350 J - 45 C to + 75 C Radial Bulk
Littelfuse SMOV25S301MP
Enlarge
Littelfuse Varistors 300Vac 385Vdc 25mm SQ
Data Sheet Non-Stocked
72: $10.13
250: $8.33
500: $7.65
1,000: $6.98
2,500: View



Min.: 72
Mult.: 1
MOV 385 V 300 V 765 V 20 kA 370 J - 45 C to + 75 C Radial Bulk
Littelfuse SMOV25S321MP
Enlarge
Littelfuse Varistors 320Vac 420Vdc 25mm SQ
Data Sheet Non-Stocked
72: $10.13
500: $8.33
1,000: $7.65
2,000: View



Min.: 72
Mult.: 1
MOV 420 V 320 V 825 V 20 kA 390 J - 45 C to + 75 C Radial Bulk
Littelfuse SMOV25S421MP
Enlarge
Littelfuse Varistors 420Vac 560Vdc 25mm SQ
Data Sheet Non-Stocked
85: $9.44
100: $8.93
250: $8.00
500: $7.25
1,000: View



Min.: 85
Mult.: 1
MOV 560 V 420 V 1100 V 20 kA 460 J 820 pF - 45 C to + 75 C Radial Bulk
Littelfuse SMOV25S511MP
Enlarge
Littelfuse Varistors 510Vac 670Vdc 25mm SQ
Data Sheet Non-Stocked
85: $9.44
100: $8.93
250: $8.00
500: $7.25
1,000: View



Min.: 85
Mult.: 1
MOV 670 V 510 V 1335 V 20 kA 520 J 680 pF - 45 C to + 75 C Radial Bulk
Littelfuse SMOV25S461MP
Enlarge
Littelfuse Varistors 460Vac 615Vdc 25mm SQ
Data Sheet Non-Stocked
85: $9.44
100: $8.93
250: $8.00
500: $7.25
1,000: View



Min.: 85
Mult.: 1
MOV 615 V 460 V 1220 V 20 kA 490 J 750 pF - 45 C to + 75 C Radial Bulk
Littelfuse SMOV25S551MP
Enlarge
Littelfuse Varistors 550Vac 745Vdc 25mm SQ
Data Sheet Non-Stocked
85: $9.44
100: $8.93
250: $8.00
500: $7.25
1,000: View



Min.: 85
Mult.: 1
MOV 745 V 550 V 1475 V 20 kA 550 J 630 pF - 45 C to + 75 C Radial Bulk
Littelfuse SMOV25S751MP
Enlarge
Littelfuse Varistors 750Vac 970Vdc 25mm SQ
Data Sheet Non-Stocked
85: $9.44
100: $8.93
250: $8.00
500: $7.25
1,000: View



Min.: 85
Mult.: 1
MOV 970 V 750 V 1950 V 20 kA 670 J 460 pF - 45 C to + 75 C Radial Bulk
Littelfuse SMOV34S111MP
Enlarge
Littelfuse Varistors 115Vac 150Vdc 34mm SQ
Data Sheet Non-Stocked
64: $16.99
100: $16.07
250: $14.40
500: $13.05
1,000: View



Min.: 64
Mult.: 1
MOV 150 V 115 V 305 V 40 kA 280 J 11500 pF - 45 C to + 75 C Radial Bulk
Littelfuse SMOV34S131MP
Enlarge
Littelfuse Varistors 130Vac 175Vdc 34mm SQ
Data Sheet Non-Stocked
64: $16.99
100: $16.07
250: $14.40
500: $13.05
1,000: View



Min.: 64
Mult.: 1
MOV 175 V 130 V 345 V 40 kA 310 J 10000 pF - 45 C to + 75 C Radial Bulk
Littelfuse SMOV34S181MP
Enlarge
Littelfuse Varistors 180Vac 240Vdc 34mm SQ
Data Sheet Non-Stocked
64: $16.99
100: $16.07
250: $14.40
500: $13.05
1,000: View



Min.: 64
Mult.: 1
MOV 240 V 180 V 488 V 40 kA 400 J 6800 pF - 45 C to + 75 C Radial Bulk
Littelfuse SMOV34S321MP
Enlarge
Littelfuse Varistors 320Vac 420Vdc 34mm SQ
Data Sheet Non-Stocked
65: $18.50
100: $15.80
250: $14.50
500: $13.80
1,000: $12.00



Min.: 65
Mult.: 1
MOV 420 V 320 V 825 V 40 kA 390 J 3800 pF - 45 C to + 75 C Radial Bulk
Littelfuse SMOV34S271MP
Enlarge
Littelfuse Varistors 275Vac 369Vdc 34mm SQ
Data Sheet Non-Stocked
65: $18.50
100: $15.80
250: $14.50
500: $13.80
1,000: $12.00



Min.: 65
Mult.: 1
MOV 369 V 275 V 700 V 40 kA 350 J 4500 pF - 45 C to + 75 C Radial Bulk
Littelfuse SMOV34S301MP
Enlarge
Littelfuse Varistors 300Vac 400Vdc 34mm SQ
Data Sheet Non-Stocked
65: $18.50
100: $15.80
250: $14.50
500: $13.80
1,000: $12.00



Min.: 65
Mult.: 1
MOV 400 V 300 V 765 V 40 kA 370 J 4050 pF - 45 C to + 75 C Radial Bulk
Littelfuse SMOV34S251MP
Enlarge
Littelfuse Varistors 250Vac 330Vdc 34mm SQ
Data Sheet Non-Stocked
70: $17.35
100: $16.63
250: $14.91
500: $13.81
1,000: $12.00



Min.: 70
Mult.: 1
MOV 330 V 250 V 650 V 40 kA 490 J 5000 pF - 45 C to + 75 C Radial Bulk
Littelfuse SMOV34S551MP
Enlarge
Littelfuse Varistors 550Vac 700Vdc 34mm SQ
Data Sheet Non-Stocked
70: $19.08
100: $18.29
250: $16.40
500: $15.19
1,000: Quote



Min.: 70
Mult.: 1
MOV 700 V 550 V 1415 V 40 kA 965 J 2250 pF - 45 C to + 75 C Radial Bulk
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