50LET Cooper/Bussmann, 50LET Datasheet

50LET

Manufacturer Part Number

50LET

Description

FUSE 50A 240V BRITISH

Manufacturer

Cooper/Bussmann

Series

LETr

Datasheet

1.100LET.pdf (7 pages)

Specifications of 50LET

Fuse Type

Fast Acting

Voltage - Rated

240VAC

Current

50A

Package / Case

Bolt Mount

Size / Dimension

0.697" Dia x 2.205" L (17.70mm x 56.00mm)

Mounting Type

Bolt Mount

Melting I²t

1400

Voltage Rating Vdc

150V

Voltage Rating Vac

240V

Fuse Current

50A

Length/height, External

58.4mm

Voltage Ac

240V

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Operating Temperature

Color

Lead Free Status / RoHS Status

Lead free / RoHS Compliant, Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

50LET

Manufacturer:

BUSSMANN

Quantity:

5 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

50LET

Manufacturer:

BUSSMANN

Quantity:

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

50LET

Manufacturer:

Cooper Bussmann

Quantity:

5 000

Current page: 1 of 7
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“F” Range

This is a superior design of fuses in the same physical

package as the “T” range.

Equivalent Ratings

This table shows the suggested equivalent ratings to

replace a “T” with an “F”.

Because of the new design technology it has been possible

to obtain the equivalent energy let-through I

amp rated fuse hence reducing the possibility of premature

operation.

This table gives a range of suggested acceptable new “F”

type to replace the earlier “T” type.

To upgrade your protection to the new “F” series select a

fuse rating within the range shown that suits your circuit

inrush requirements. You will still have the same or better

protection of your semiconductor devices.

It should be remembered that to protect devices we must

consider the energy let-through of the selected fuse. The

label amp rating will relate to the full load current and the

circuit inrush amps.

The suggested replacements are based on:

This gives enhanced reliability due to the use of a higher

current rated fuse which avoids nuisance operation and still

gives improved short-circuit protection.

The Edison British Style semiconductor protection fuses

include a 660VAC line utilizing new filler technology. These

new fuses have greatly reduced peak let-through current

and energy under fault conditions and hence extend fuse

protection capability. They can be recognized by the letter

“F” in their catalog number. Application and technical data

for these 660VAC “F” fuses and the original line of 240VAC

British “T” type fuses are presented on the following pages.

a. Similar surge withstand to normal circuit overloads.

b. Lower total I

t let-through.

t with a higher

Replacement Table — “T” to “F” (660V)

Earlier

“T” Range

6CT

10CT

12CT

16CT

20CT

25ET

32ET

35ET

40ET

45ET

56ET

63ET

–

80ET

65EET

75EET

90EET

110EET

–

140EET

–

160EET

–

160MT

180MT

200MT

–

250MT

280MT

315MT

355MT

180MMT

200MMT

225MMT

280MMT

315MMT

355MMT

–

400MMT

450MMT

500MMT

560MMT

630MMT

710MMT

SEMICONDUCTOR PROTECTION FUSES

New “F” Range

Lowest

Rating

6FC

10FC

12FC

16FC

20FC

–

35FE

40FE

45FE

63FE

–

80FE

–

140FEE

–

160FEE

–

200FM

225FM

250FM

280FM

315FM

350FM

350MT

180FM

200FM

225FM

280FM

315FM

350FM

–

500FMM

550FMM

630FMM

700FMM

BRITISH STYLE–

Highest

Rating

6FC

10FC

12FC

16FC

20FC

–

35FE

40FE

45FE

50FE

63FE

71FE

80FE

90FE

100FE

–

100FEE

120FEE

140FEE

160FEE

180FEE

200FEE

180FM

200FM

225FM

250FM

280FM

315FM

350FM

180FM

200FM

225FM

280FM

315FM

350FM

400FMM

450FMM

500FMM

550FMM

630FMM

700FMM

Related parts for 50LET

50LET Summary of contents

Page 1

... British “T” type fuses are presented on the following pages. “F” Range This is a superior design of fuses in the same physical package as the “T” range. Equivalent Ratings This table shows the suggested equivalent ratings to replace a “ ...

Page 2

... EET FEE 2.76" 70.0mm FM 3.15"-3.35" 80-85mm FMM 3.15"-3.35" 80-85mm • Interrupting rating 200kA RMS Symmetrical. • These fuses meet the requirements Part 4 and IEC 269-4 • Consult Edison for UL Recognition information SEMICONDUCTOR PROTECTION FUSES SEC) Part Clearing Clearing Number ...

Page 3

... 10 17 10LET 3 12LET 16LET 15 70 140 25LET 18 120 250 32LET 32 200 450 35LET 50 320 600 50LET 100 500 1400 63LET 180 1100 2200 80LET 300 1900 3800 100LET 600 3800 7500 125LET 600 3800 7500 160LET 1100 7000 18000 180LET 1600 ...

Page 4

... Type 74.6 64.3 LCT & 63.5 LET 56 41.8 FEE & EET 113 80-85 LMT 84 59 FMM 113 80-85 LMMT & LCT FM & LMT SEMICONDUCTOR PROTECTION FUSES 54.8 8.7 8.7 28 8.4 8.7 48 17.7 19.1 26.2 17.7 19 41 FE, ET & LET BRITISH STYLE– ...

Page 5

... CURRENT IN AMPERES 660V Time-Current Curves FC (6-20A) FE (35-100A) FM (180-350A) 88 SEMICONDUCTOR PROTECTION FUSES AMPERE RATING 660V Time-Current Curves FEE (100-200A) FMM (400-700A CURRENT IN AMPERES BRITISH STYLE– AMPERE RATING ...

Page 6

... CURRENT IN AMPERES 240V Time-Current Curves LCT (6-20A) LET (25-180A) LMMT (400-900A) SEMICONDUCTOR PROTECTION FUSES AMPERE RATING 240V Time-Current Curves LMT (160-450A .01 .004 CURRENT IN AMPERES BRITISH STYLE– AMPERE RATING 89 ...

Page 7

Indicator System Trip-Indicators Trip-indicators are available for use in parallel with the main fuse. They can either be attached to the associated fuse or mounted separately in panel mounted fuse clips, reference CL1. A push-on adapter and microswitch attachment is ...

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