Varistor Products

©2012 Littelfuse, Inc.

Revision: July 5, 2012

Industrial High Energy Thermally Protected Varistors > TMOV

Specifications are subject to change without notice.

Please refer to www.littelfuse.com/series/tmov34s.html for current information.

Pulse Rating Curve

Hx34

50,000

20,000

10,000

5,000

2,000

1,000

500

200

100

50

20

10

20

100

1,000

10,000

IMPULSE DURATION ( μs)

15

1

INDEFINITE

2

Peak Current & Energy Derating Curve

Typical time to open circuit under UL1449 Abnormal

Overvoltage Limited Current Test

0.1

1

10

10

100

1000

1000

Time s

0.125A

0.5A

2.5A

5A

Typical

1000

10000

1mA

10mA

100mA

1A

10A

100A 

10000A

100000A

TA = -55 C to 85C

V751

V681

V661

V571

V551

V511

V391

V351 V331 V321

V271

V251 V201 V181

V151

V141

V111

V131

V301

V481

V461

V421

100

1000A

Maximum Clamping Voltage

TMOV34S series

Current - AMPS

Voltage -

VOLTS

are intended, in conjunction with appropriate enclosure

overvoltage conditions, the units will exhibit substantial

heating and potential venting prior to opening. Modules

should be designed to contain this possibility. Application

testing is strongly recommended.

surge current and energy ratings must be reduced as shown.

0

20

40

60

80

100

-55

50

60

70

80

90

100

110

120

130

AMBIENT TEMPERATURE (ºC)

Figure 1

Figure 2

Figure 3

Figure 4