Drawing

31
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
0.01
0.10
1.00
10.00
100.00
1000.00
1
0000.00
10 100 1000 10000 100000 1000000
Time in Seconds
Current in Amperes
ED, EHD, FDB FD, HFD, FDC 15A 2, 3 & 4 pole
Maximum
Tolerance
Minimum
Tolerance
Circuit Breaker time/current curv es
Series C F-Frame Circuit Breakers
Catalog Types: ED, EHD, FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only.
Based on cold start at rated ambient temperature.
Connected with four (4) feet of rated wire (60/75
°
C) per terminal
with all poles wired in series. Tested in open air.
Instantaneous
tripping is single pole.
Maximum Vac: 600V at 50/60Hz
Maximum Vdc: 250V
Breaker Rating
Continuous Amps Instantaneous trip amperes
15A See curve
May be 42% higher for dc voltages
Interruption Ratings (UL/CSA listed)
Breaker Symmetrical RMS amperes (kA)
Type 240 Vac 480Vac 600 Vac 250 Vdc 125 Vdc
ED 65 -- -- -- 10
E
HD 18 14 -- 10 --
FDB 18 14 14 10 --
FD 65 35 18 10 --
HFD 100 65 25 22 --
FDC 200 100 35 22 --
Maximum Single Pole Trip
Times at 25C
interruption rating and
application determines
end of curve
600V
480V
240V
Figure 28. Types ED, EHD, FDB, FD, FDC, and HFD 15A 2, 3 & 4 pole—Curve Number TC012036EN
AB DE-ION Circuit Breakers—two-, three-, and four-poles