BK4-MDA-20RX datasheet, PDF - EEWORLD Datasheet

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BK4-MDA-20RX: Descriptioncartridge fuses; CategoryCircuit protection; File Size272KB，2 Pages; ManufacturerBussmann (Eaton)

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BK4-MDA-20RX Overview

cartridge fuses

BK4-MDA-20RX Parametric

Parameter Name	Attribute value
Manufacture	Cooper Bussm
Product Category	Cartridge Fuses
RoHS	N
Body Style	Cylindrical
Current Rating	20 A
Voltage Rating AC	250 V
Mounting Style	Holder / Cli
Fuse Type	Time Delay / Slow Blow
Fuse Size / Grou	3AB (6.3 mm x 32 mm)
Dimensions	31.75 mm L x 6.35 mm D
Case Diamete	6.35 mm
Case Length	31.75 mm
Indicator Style	Without Indic
Packaging	Bulk
Produc	Specialty Fuses
Termination Style	Cli
Type	Electronic Time Delay Ferrule Fuse

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˝ x 1

˝ Ceramic Tube Fuses

MDA Series,

Time-Delay

Description

• Time-delay

• Optional axial leads available

• 1/4˝ x 1-1/4˝ (6.35 x 31.75mm) physical size

• Ceramic tube, nickel-plated brass endcap construction

• UL Listed product meets standard 248-14

Electrical Characteristics

Rated Current

Amp Rating

Opening Time

100%

None

1/4 - 30A

135%

60 Minutes Max.

200%

120 Seconds Max.

Dimensions - mm (in)

Drawing Not to Scale

38.10

(1.500)

32.82

(1.292)

38.10

(1.500)

Agency Information

• UL Listed Card: MDA 2/10 - 20A (Guide JDYX,

File E19180)

• UL Recognized Card: MDA 25 - 30A (Guide JDYX2,

File E19180)

• CSA Certification Card: MDA 2/10 - 20

(Class No. 1422-01)

• CSA Component Acceptance: MDA 25-30A

(Class No. 1422-30)

Environmental Data

• Shock: 1/100A and 8/10A – MIL-STD-202,

Method 213, Test Condition I;

1A thru 30A – MIL-STD-202, Method 213,

Test Condition J

• Vibration: 1/100A and 8/10A – MIL-STD-202,

Method 201; 1/4A thru 30A – MIL-STD-202,

Method 204, Test Condition C (Except 5g, 500HZ)

6.76

(0.266)

DIA. OF LEADS

0.81

0–15 AMP:

(0.032)

20–30 AMP: 1.02

(0.040)

31.75

(1.250)

6.35

(0.250)

Ordering

• Specify packaging, product, and option code

SPECIFICATIONS

Part

Number

MDA-1/4-R

MDA-1/2-R

MDA-3/4-R

MDA-1-R

MDA-1-1/2-R

MDA-2-R

MDA-2-1/2-R

MDA-3-R

MDA-4-R

MDA-5-R

MDA-6-R

MDA-7-R

MDA-8-R

MDA-10-R

MDA-12-R

MDA-15-R

MDA-20-R

MDA-25A-R

MDA-30A-R

†

‡

Voltage

Rating

Vac

Vdc

250

125

250

125

250

125

AC Interrupting

Rating* (amps)

250V

125V

10000

100

10000

100

10000

200

10000

200

10000

200

10000

200

10000

200

10000

200

10000

200

10000

200

10000

750

10000

750

10000

1500

10000

1500

10000

1500

10000

DC Interrupting

Rating (amps)

125V

10000

Typical DC Cold

Resistance**

(Ω)

9.325

1.925

0.8555

0.560

0.2585

0.170

0.06685

0.05350

0.03625

0.02610

0.02120

0.01690

0.01350

0.00948

0.00725

0.00553

0.00400

0.00305

0.00243

Typical

Melting I

t†

0.748

2.53

8.58

12.21

27.5

70.4

31.79

44.99

147.4

380.49

587.73

638.33

1038.4

1620.43

125.18

336.82

483.45

734.69

1096.7

Typical

Voltage

Drop‡

4.00

1.42

1.31

1.03

0.691

0.623

0.213

0.182

0.162

0.145

0.141

0.137

0.134

0.135

0.128

0.107

0.095

0.105

0.110

Interrupting Ratings (Measured at 70% - 80% power factor on AC. The interrupting ratings for 25Amp, 30Amp were measured at 90% - 100% power factor on AC)

DC Cold Resistance (Measured at ≤10% of rated current)

Typical Melting I

t (A

Sec) (I

t was measured at listed interrupting rating and rated voltage)

Typical Voltage Drop (Voltage drop was measured at 25°C ambient temperature at rated current)

0709

SB-BU09312

Page 1 of 2

Data Sheet 2002

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