1-6
BE1-50/51B-237/-238 General Information
9252000899 Rev —
Figure 1-5. Harmonic Rejection
Target Indicators
A gravity-latched, manually-reset, current-operated target indicator is provided for the time-overcurrent
(51) trip output and the instantaneous overcurrent A (50-A) trip output. A target indicator is not provided
for the 50-B trip output. The level of trip circuit current required to operate each target is individually
controlled by a circuit board jumper. See Section 2,
Controls and Indicators
for jumper locations and
function assignments
Minimum Operating Current
Jumper Position—Pins 1 and 2:
0.9 to 2.25 A
∗
Jumper Position—Pins 2 and 3:
80 mA to 200 mA
∗
∗
Minimum operating current values. See
Output Contacts
for the maximum acceptable levels of
trip circuit currents.
Output Contacts
Output contacts are surge protected and rated as follows.
Resistive Ratings
120/240 Vac:
Make 30 amperes for 0.2 seconds, carry 7 amperes for 2 minutes, 3
amperes continuously, and break 5 amperes.
125/250 Vdc:
Make 30 amperes for 0.2 seconds, carry 7 amperes for 2 minutes, 3
amperes continuously, and break 0.3 ampere.
Inductive Ratings
120/240 Vac, 125/250 Vdc:
Make and carry 30 amperes for 0.2 seconds, carry 7 amperes for 2
minutes, 3 amperes continuously, and break 0.3 ampere. (L/R = 0.04).
Terminal Assignments
51 Element:
1, 2
50-A Element:
1, 2
50-B Element:
1, 3
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