V251DB40 Littelfuse Inc, V251DB40 Datasheet

V251DB40

Manufacturer Part Number

V251DB40

Description

VARISTOR INDUST 250V 370J DB

Manufacturer

Littelfuse Inc

Series

DA/DBr

Type

MOVr

Datasheets

1.V421DA40.pdf (4 pages)

2.V131DA40.pdf (4 pages)

Specifications of V251DB40

Package / Case

Chassis Mount

Number Of Circuits

Energy

370J

Current-surge

40kA

Maximum Ac Volts

250VAC

Maximum Dc Volts

330VDC

Varistor Voltage

390V

Voltage Rating Dc

330 V

Voltage Rating Ac

250 V

Clamping Voltage

650 V

Peak Surge Current

40 KA

Surge Energy Rating

370 J

Capacitance

5000 pF

Operating Temperature Range

- 55 C to + 85 C

Mounting

SMD/SMT

Dimensions

40 mm Dia. x 60.3 mm L x 12.7 mm H

Termination Style

Screw

Brand/series

DB Series

Current, Peak

40000 A

Electric Strength

5000 V

Energy Rating

370 Joules

Mounting Style

Bolt-Down

Package

Quick Connect Push-On Connector

Power Rating

370 Joules (Max.) @ +85 °C

Resistance, Insulation

1000 Megohms

Technology

Metal Oxide

Temperature, Operating, Maximum

85 °C

Temperature, Operating, Minimum

-55 °C

Terminal Type

Quick Connect Push-On Connector

Voltage, Ac

250 VAC

Voltage, Clamping

650 V

Voltage, Dc

330 VDC

Voltage, Operating

250 VAC @ +85 °C, 330 VDC @ +85 °C

Voltage, Varistor

429

Wide Operating Voltage Range Vmacrms

150 V to 575 V

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

Lead Free Status / RoHS Status

Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

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

RoHS

Continuous

Steady State Applied Voltage:

Transients:

Operating Ambient Temperature Range (T

Storage Temperature Range (T

Temperature Coefﬁcient (a

Hi-Pot Encapsulation (COATING Isolation Voltage Capability)

(Dielectric must withstand indicated DC voltage for one minute per MIL-STD 202, Method 301)

COATING Insulation Resistance

Agency Approvals

Absolute Maximum Ratings

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.

Agency

DA SERIES

DA/DB Varistor Series

AC Voltage Range (V

DC Voltage Range (V

Peak Pulse Current (I

For 8/20μs Current Wave (See Figure 2)

Single Pulse Energy Range

For 2ms Current Squarewave (W

) of Clamping Voltage (V

STG

)

Agency File Number

E320116

)

M(AC)RMS

M(DC)

)

DB SERIES

) at Speciﬁed Test Current

Varistor Products

)

Description

The DA and DB Series transient surge suppressors

are heavy-duty industrial Metal-Oxide Varistors

(MOVs) designed to provide surge protection for

motor controls and power supplies used in oil-

drilling, mining, and transportation equipment.

These UL recognized varistors have identical ratings

and speciﬁcations but differ in case construction

to provide ﬂexibility in equipment designs.

DA Series devices feature rigid terminals to ensure

secure wire contacts. Both the DA and DB Series feature

improved creep and strike distance capability to minimize

breakdown along the package surface design that provides

complete electrical isolation of the disc subassembly.

See DA/DB Series Device Ratings and Speciﬁcations

table for part number and brand information.

Features

•

RoHS compliant

and Lead–free

High energy

absorption capability

Wide operating

voltage range

M(AC)RMS

up to 1050J

DA/DB Series

270 to 1050

-55 to +125

130 to 750

175 to 970

-55 to +85

130V to 750V

40,000

<0.01

5000

1000

Units

%/ºC

MΩ

ºC

•

Screw terminals (DA

Series),quick connect

push-on connectors

(DB Series)

Case design provides

complete electrical

isolation of disc

subassembly

40mm diameter disc

No derating up to

85ºC ambient

DA/DB Varistor Series

Related parts for V251DB40

V251DB40 Summary of contents

Page 1

DA/DB Varistor Series RoHS DA SERIES Agency Approvals Agency Agency File Number E320116 Absolute Maximum Ratings • For ratings of individual members of a series, see Device Ratings and Speciﬁcations chart Continuous Steady State Applied Voltage: AC Voltage Range (V ...

Page 2

... DA/DB Series Ratings & Speciﬁcations Maximum Rating (85ºC) Continuous Part Number Device Branding V RMS V V M(AC (V) V131DA40 V131DB40 130 V151DA40 V151DB40 150 V251DA40 V251DB40 250 V271DA40 V271DB40 275 V321DA40 V321DB40 320 V421DA40 V421DB40 420 V481DA40 V481DB40 480 V511DA40 V511DB40 510 V571DA40 V571DB40 575 ...

Page 3

Maximum Clamping Voltage V131DA40 - V751DA40 and V131DB40 - V751DB40 6,000 MAXIMUM CLAMPING VOLTAGE 5,000 DISC SIZE 40mm 4,000 V751DA/DB40 130 TO 750 VM(AC) RATING V661DA/DB40 3,000 V571DA/DB40 V511DA/DB40 V481DA/DB40 2,000 V421DA/DB40 1,000 900 800 700 600 500 400 V151DA/DB40 ...

Page 4

Product Dimensions (mm) DA SERIES “A” DIMENSION: FILISTER HEAD SCREW - 51mm (2.01) PAN HEAD SCREW - 53mm (2.09) A 4.3mm 15mm (0.59) (0.170) 23mm 1mm M4 INTERNATIONAL (0.90 0.04) THREAD 67mm (2.64) 57mm (2.24) 62mm 4.5mm (0.18) (2.44) Part ...

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