PolySwitch®

PTC Devices

Overcurrent Protection Device

PRODUCT: RUEF500

DOCUMENT: SCD25177

REV LETTER: G

REV DATE: JULY 26,2016

PAGE NO.: 1 OF 2

© 2016 Littelfuse,Inc

littelfuse.com

Specifications are subject to change without notice.

Revised July 26, 2016

Specification Status: Released

Insulating Material:

Cured, Flame Retardant Epoxy Polymer

meets UL94 V-0 Requirements

Lead Material:

20 AWG Tin Plated Copper

Marking:

Manufacturer’s Mark

Lot Identification

and Part Identification

U500

TABLE I. DIMENSIONS:

A

B

C

D

E

MIN

MAX

MIN

MAX

MIN

MAX

MIN

MAX

MIN

MAX

mm:

--

14.0

--

24.1

9.4

10.9

7.6

--

--

3.0

in*:

--

(0.55)

--

(0.95)

(0.37)

(0.43)

(0.30)

--

--

(0.12)

*Rounded off approximation

TABLE II. PERFORMANCE RATINGS:

I HOLD

CURRENT

RATINGS

TIME TO

TRIP

RESISTANCE

ONE-HOUR

POST-TRIP

RESISTANCE

STANDARD

TRIP

TRIPPED POWER

DISSIPATION

AMPS

20°C

AMPS AT

20°C

SECONDS AT

20°C, 25.0A

OHMS

AT 20.0° C

OHMS

AT 20°C

WATTS AT

20°C

WATTS AT

20°C

HOLD

HOLD

TRIP

MAX

MIN

MAX

MAX

NOMINAL

MAX

5.00

5.00

10.00

14.5

0.01

0.03

0.05

3.00

3.23

Agency Recognitions:

UL, CSA, TUV, CQC

Reference Documents:

PS300

Precedence:

This specification takes precedence over documents referenced herein.

Effectivity:

Reference documents shall be the issue in effect on the date of invitation for bid.

CAUTION:

Operation beyond the rated voltage or current may result in rupture, electrical arcing or flame.

Materials Information

ROHS Compliant

ELV Compliant

Pb-Free

Halogen Free*

* Halogen Free refers to: Br≤900ppm, Cl≤900ppm,Br+Cl≤1500ppm.

HF