Drawing

14
Time Current Curves TC01200002E
Effective March 2018
Series C
F-Frame
EATON www.eaton.com
0.01
0.1
1
10
100
1000
10000
1 10 100
Time in Seconds
Current in Multiples of I
n
2×
2.5×
3.5×
3×
4×
5×
6×
8×
10×
Long Delay Pickup
@ 115% I
r
± 5%
Long Delay
@ 6 × I
r
+0%/-30%
0.001
0.01
0.1
1
1000 10000 100000
Current in Amps
Interrupting
Rating
Determines
End of Curve
Fixed Instantaneous
Override
600V
480V
240V
Instantaneous
Pickup ±10%
Figure 11. Digitrip 210+ Trip Units (225A), Long Delay, Instantaneous Pickups and Override (LI)
Curve Number TD012006EN, June 2015
Digitrip 210+ Circuit Breaker Time/Current Curves (Phase Current)
Series C F-frame circuit breakers (225A)
Catalog Types: FDE, HFDE
Trip Unit Types: 21 (LSI)
UL/CSA rms Sym. kA, 50/60 Hz
FDE
HFDE
240Vac 480Vac 600Vac 250Vdc
Breaker Type
Interrupting Rating
65 35 18 —
100 65 25 —
A 40A 100A
B 50A 110A
C 60A 125A
D 70A 150A
E 80A 175A
F 90A 200A
G 100A 225A
Rated Amperes
I
r
100A 225A
J 2 450A
K 2.5 565A
L 3 675A
M 3.5 790A
N 4 900A
O 5 1125A
P 6 1350A
Q 8 1800A
R 10 2250A
S Override 2500A
Override 2500A
Setting li(xln) Level
Notes:
1 Curve accuracy applies from -20C to +55C. Temperatures above +105C cause an
overtemperature protection trip.
2 There is a thermal memory effect that can act to shorten the long delay. The amount
of time delay reduction is inversely proportional to the amount of time that has
elapsed since the previous overload. Approximately ve minutes is required
between overloads to completely reset this thermal memory effect.
3 Total clearing times shown include the response times of the trip unit, the breaker
opening, and the interruption of the current.
4 For high fault current levels an additional xed instantaneous hardware override is
provided at 2400A ±20% (corresponding to 11xlr 225A frame, 16xlr for 150A frame,
and 24xlr for 100A frame).