Peak Let-Through Curves

Time-Current Curves

100

1,000

10,000

100,000

1,000,000

FUSE RATING (AMPS)

1,000

100

10

1

.1

CURRENT IN AMPS

.01

AMP

RATING

Energy Let-Through Curves

100

10

1

.1

PROSPECTIVE CURRENT (SYM. RMS kA)

.01

30

60

100

200

400

600

© 2012 Cooper Bussmann

www.cooperbussmann.com

0512 BU-SB98107

Page 2 of 2

Data Sheet 4129

The only controlled copy of this Data Sheet is the electronic read-only version located on the Cooper Bussmann Network Drive. All other copies of

this document are by definition uncontrolled. This bulletin is intended to clearly present comprehensive product data and provide technical informa-

tion that will help the end user with design applications. Cooper Bussmann reserves the right, without notice, to change design or construction of

any products and to discontinue or limit distribution of any products. Cooper Bussmann also reserves the right to change or update, without notice,

any technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications.