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48049-136-05 Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Rev. 01, 07/2012 Section 1—General Information
© 1999–2012 Schneider Electric All Rights Reserved
5-EN
ENGLISH
Section 1—General Information
Communications Micrologic trip units can communicate with other devices if the optional
Circuit Breaker Communication Module (BCM) is installed. For information
on the communication module, see the product catalog and Modbus™
Communications System, Data Bulletin 0613IB1201.
Trip Unit Settings On the face of the trip unit are adjustable switches to allow changing of trip
characteristics. Trip units are shipped with the long-time pickup switch set at
1.0 and all other trip unit adjustments set at their lowest settings.
Introduction
Micrologic™ trip units (A) provide adjustable
tripping functions on electronic trip circuit
breakers. The product name (B) specifies the
level of protection provided by the trip unit.
Micrologic trip units are field replaceable to allow
for upgrading of the trip unit in the field. For
complete information on available circuit breaker
models, frame sizes, interrupting ratings, sensor
plugs, rating plugs and trip units, see the product
catalog.
Figure 1: Micrologic Trip Unit
Micrologic 3.0A
Type of protection
2—Basic IEC protection (LS0)
5—Selective protection (LSI)
6—Selective protection plus ground fault
Trip unit series
0—Indicates the first version
Type of measurement
None—Provides protection only
A—Provides protection plus ammeter measurements
protection for equipment (LSIG)
3—Basic UL protection (LI)
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06133249
06134858
A
B
D
E
C
A—Micrologic Trip Unit
B—Product Name
C—Switch Cover
D—Switch Cover Opening Slot
E—Adjustable Rating Plug