Energy Let-Through Curves
Time-Current Curves
AMP
RATING
1,000
2
Total I t at 600V
2
Total I t at 460V
1,000,000
100,000
10,000
1,000
2
Pre-Arcing I t
100
10
1
.1
100
.01
FUSE RATING (AMPS)
Peak Let-Through Curves
CURRENT IN AMPS
100
600
400
200
100
10
1
60
30
.1
.01
PROSPECTIVE CURRENT (SYM. RMS kA)
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.
© 2012 Cooper Bussmann
www.cooperbussmann.com
0512 BU-SB98107
Page 2 of 2
Data Sheet 4129
COOPER [ COOPER BUSSMANN, INC. ]
