Littelfuse UltraMOV 25S Varistor Series User Manual download pdf

107

Revised: May 8, 2013

Varistor Products

Speciﬁcations are subject to change without notice.

Please refer to www.littelfuse.com/series/ultramov25s.html for current information.

UltraMOV™ 25S Varistor Series

Radial Lead Varistors > UltraMOV

25S Series

UltraMOV

™

25S Series

RoHS

Description

Features

• Lead–free and

RoHS compliant.

• High peak surge

current rating (I

)

22kA, single 8/20μs

pulse, (25mm)

• 40kA rating when 2

devices paralleled

(VN(DC) matched

within +/- 5%,

contact factory for

special selections

• Standard operating

voltage range

compatible with

common AC line

voltages (115 to

750VAC)

• Characterized for

maximum standby

current (Leakage)

• Custom voltage

types available

• Standard lead form

and lead space options

Agency Approvals

Absolute Maximum Ratings

• For ratings of individual members of a series, see Device Ratings and Speciﬁcations chart

Agency Agency FIle Number Status

E320116 Approved

091788 Approved

Continuous UltraMOV

25S Series Units

Steady State Applied Voltage:

AC Voltage Range (V

M(AC)RMS

) 115 to 750 V

DC Voltage Range (V

M(DC)

) 150 to 970 V

Transients:

Peak Pulse Current (I

) 8x20μs Current Wave Single Pulse 22,000 A

Single-Pulse Energy Capability (W

) 2ms Current Wave 230 to 890 J

Operating Ambient Temperature Range (T

) -55 to +85 ºC

Storage Temperature Range (T

STG

) -55 to +125 ºC

Temperature Coefﬁcient (a

) of Clamping Voltage (V

) at Speciﬁed Test Current <0.01 %/C

Hi-Pot Encapsulation (COATING Isolation Voltage Capability)

Dielectic Withstand DC for 1 min per MIL–STD–202, Method 301

2500 V

Insulation Resistance of the Epoxy Coating 1000 MΩ

CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only

rating and operation of the device at these or any other conditions above those indicated in the operational sections of this speciﬁcation is

not implied.

The UltraMOV

25S Varistor Series is designed for

applications requiring high peak surge current ratings and

high energy absorption capability. UltraMOV™ varistors are

primarily intended for use in AC Line Voltage applications

such as Surge Protective Devices (SPD), Uninterruptable

Power Supplies (UPS), AC Power Taps, AC Power Meters,

or other products that require voltage clamping of high

transient surge currents from sources such as lightning,

inductive load switching, or capacitor bank switching.

These devices have 25mm square forms are produced

in a radial lead package and offered with straight leads.

UltraMOVs are manufactured with recognized epoxy

encapsulation and are rated for ambient temperatures

up to 85°C with no derating. This 25S Series is

LASER-branded and is supplied in bulk packaging.

UltraMOV

25S Varistor Series

1 2 3 4 5

Summary of Contents

Page 1 - 25S Varistor Series

Page 2 - 25S Series

Page 3

Page 4

Page 5

Comments to this Manuals

No comments

Littelfuse UltraMOV 25S Varistor Series User Manual

Browse online or download User Manual for Hardware Littelfuse UltraMOV 25S Varistor Series. Littelfuse UltraMOV 25S Varistor Series User Manual

Summary of Contents

Comments to this Manuals

Related products and manuals for Hardware Littelfuse UltraMOV 25S Varistor Series