PolySwitch® Resettable PPTCs

© 2020 Littelfuse, Inc.

Specifications are subject to change without notice.

Revised: GD. 12/20/20

Line-Voltage-Rated Devices

Line-Voltage-Rated Devices

RoHS

Description

Littelfuse PolySwitch line-voltage-rated (LVR) devices

help protect electric motors and transformers used in

commercial and home appliances from damage caused by

mechanical overloads, overheating, stall, lost neutral and

other potentially harmful conditions.

The LVR line-voltage product line of polymeric positive

temperature coefficient (PPTC) devices includes

components that are rated for line voltages of 120VAC,

VDC and 240VAC, VDC for up to 2A of operating current at

20°C. They help protect against damage caused by both

overcurrent surges and overtemperature faults. They also

offer low resistance and are compatibly sized with fuse

solutions.

Applications

• Electromagnetic loads

• Game machines

• Industrial controls

• Lighting ballasts

• Loudspeakers

• Medical equipment

• Motors, fans and blowers

• POS equipment

• Satellite video receivers

• Security and fire alarm systems

• Test and measurement

equipment

• Transformers

• USB hubs, ports and

peripherals

• Intelligent appliance

• Robotic machine

Electrical Characteristics

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

LVR005NK

LVR005NS

RF1251-000

RF1245-000

0.05

0.12

240

265

1.0

0.9

0.25

10.0

18.5

31.0

65.0

0.51/24

120

135

20.0

LVR008NK

LVR008NS

RF1252-000

RF1246-000

0.08

0.19

240

265

1.2

0.9

0.40

10.0

7.4

12.0

26.0

0.51/24

120

135

20.0

Agency

Agency File Number

®

E74889

78165

72161781

CQC16001159721

Additional Information

Datasheet

Resources

Samples

Agency Approvals

Features

• RoHS and Halogen-free

compliant

• Broadest range of radi-

al-leaded resettable devic-

es

available in the industry

• Current ratings from 50mA

to 2A

• Line voltage rating of

120VAC, VDC and 240VAC,

VDC

• Fast time-to-trip

• Low resistance

• UL Recognized to UL 1434

• CSA Approved to CSA TIL

No. CA-3A

• TUV Approved to EN

60730-1

• CQC Approved to GB

8898, GB/T 7153, GB

14536.1