PolySwitch® Resettable PPTCs

© 2020 Littelfuse, Inc.

Specifications are subject to change without notice.

Revised: GD. 12/20/20

Line-Voltage-Rated Devices

Electrical Characteristics

(Cont’d)

Part

Number

Ordering

Part

Number

IH

IT

VMAX†

IMAX†

PD Typ

Max Time-to-

trip

RMIN

RMAX

R1MAX

Lead Size

(mm2/

AWG)

Operating

Interrupt

Interrupt

(A)

(A)

(VAC, VDC)

(VAC, VDC)

(A)

(W)

(A)

(s)

(Ω)

(Ω)

(Ω)

LVR

LVR012K

LVR012S

122814-000

D63011-000

0.12

0.30

240

265

1.2

1.0

0.60

15.0

3.0

6.5

12.0

0.51/24

120

135

20.0

LVR016K

LVR016S

887538-000

224962-000

0.16

0.37

240

265

2.0

1.4

0.80

15.0

2.5

4.1

7.8

0.51/24

120

135

20.0

LVR025K

LVR025S

657076-000

543478-000

0.25

0.56

240

265

3.5

1.5

1.25

18.5

1.3

2.1

3.8

0.64/22

120

135

20.0

LVR033K

LVR033S

F74007-000

F71843-000

0.33

0.74

240

265

4.5

1.7

1.65

21.0

0.77

1.24

2.60

0.64/22

120

135

20.0

LVR040K

LVR040S

598204-000

336638-000

0.40

0.90

240

265

5.5

2.0

2.00

24.0

0.60

0.97

1.90

0.64/22

120

135

20.0

LVR055K

LVR055S

F17956-000

758968-000

0.55

1.25

240

265

7.0

3.4

2.75

26.0

0.45

0.73

1.45

0.81/20

120

135

20.0

LVR075K-240

LVR075S-240

RF4176-000

RF3174-000

0.75

1.50

240

265

7.5

2.6

3.75

18.0

0.316

0.483

0.839

0.81/20

LVR100K-240

LVR100S-240

RF4177-000

RF3175-000

1.00

2.00

240

265

10.0

2.9

5.00

21.0

0.218

0.334

0.580

0.81/20

LVR125K-240

LVR125S-240

RF4178-000

RF3176-000

1.25

2.50

240

265

12.5

3.3

6.25

23.0

0.165

0.253

0.440

0.81/20

LVR200K-240

LVR200S-240

RF4179-000

RF3177-000

2.00

4.00

240

265

20.0

4.5

10.00

28.0

0.089

0.131

0.221

0.81/20

Notes:

IH

: Hold current: maximum current device will pass without interruption in 20°C still air.

IT

: Trip current: minimum current that will switch the device from low resistance to high resistance in 20°C still air.

VMAX Operating : Maximum continuous voltage device can withstand without damage at rated current.

VMAX Interrupt : Under specified conditions this is the highest voltage that can be applied to the device at the maximum interrupt current.

IMAX Interrupt : Maximum fault current device can withstand without damage at rated voltage.

PD

: Power dissipated from device when in the tripped state in 20°C still air.

RMIN

: Minimum resistance of device as supplied at 20°C unless otherwise specified.

RMAX

: Maximum resistance of device as supplied at 20°C unless otherwise specified.

R1MAX

: Maximum resistance of device when measured one hour post trip at 20°C unless otherwise specified.

* Electrical characteristics determined at 25°C.

† See Application Limitations on next page.