1-4
BE1-50/51B-237/-238 General Information
9252000899 Rev —
BE1-50/51B-238
Continuous Rating:
2.8 Aac
∗
1 Second Rating:
80 Aac
∗
Continuous rating is 2.8 Aac for temperatures up to 45
°
C. See Figure 1-2 for derating curve.
Continuous Current
Current Sensing Input
0
0.4
0.8
1.2
1.6
2
2.4
2.8
3.2
-40
-20
0
20
40
60
Ambient Temperature (C)
Curr
ent (A
ac)
Figure 1-2. Current Sensing Input Derating Curve (BE1-50/51B-238)
BE1-50/51B-237 Burden
Figure 1-3 illustrates the current sensing input burden characteristic.
At 0.5 Aac:
2.8
Ω
At 5.0 Aac:
0.3
Ω
BE1-50/51B-230 CT Burden
0
20
40
60
80
100
120
140
160
0
10
20
30
40
50
Input Current (Amps)
B
u
rd
e
n
in
VA
(
rms
)
Figure 1-3. Current Sensing Input Burden (BE1-50/51B-237)
BE1-50/51B-237 CT Burden
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