Cut Sheet

43
Technical Data TD01701001E
Effective March 2017
UL low-voltage busway
Pow-R-Way III
EATON www.eaton.com
Plug-in devices (continued)
Digitrip OPTIM bus plugs (Figure 66)
Digitrip OPTIM™ is a programmable, communicating, micro-
processor-based electronic trip unit system for Eaton Series C circuit
breakers. OPTIM is available for Pow-R-Way III bus plugs on K-Frame
(125–400 A), L-Frame (70–600 A), and N-Frame (400–1200 A) circuit
breakers. Digitrip OPTIM provides an electrical distribution system
with superior programmable protection, coordination, and a state-of-
the-art advanced warning capability along with system diagnostics,
monitoring, and communications. Digitrip OPTIM is available in two
trip unit types: OPTIM 550 and OPTIM 1050.
Unique Digitrip OPTIM features can provide time current settings
with more increments that permit the user to OPTIMize system
protection and coordination; improved accuracy to give more
selectivity and closer sensitivity in providing coordination;
programmable short delay and/or instantaneous curve tripping
options; and selectable thermal memory, as well as selectable sure
start discriminator protection features. Increased system security is
provided by the addition of a programmable password protection.
For improved system coordination, I
4
t long delay time slope has
been added to the traditional nine LSIG curve shaping options. Short
delay and ground delay zone selective interlocking have also been
added, down to a 70 A circuit breaker.
The following Advance Warning options are also available:
•
A programmable high load phase and neutral alarm, adjustable
between 50% and 100% of I
r
(LDPU setting), will signal an
impending trip condition
•
An adjustable ground fault alarm that will alert the user of a
ground fault condition without the breaker
•
Energy alarming can be performed (such as peak demand exceeded)
to reduce energy costs with OPTIM 1050 via PowerNet
•
Total Harmonic Distortion (THD) alarming detects changes in
power quality with OPTIM 1050 via PowerNet
Digitrip OPTIM provides a complete selection of system diagnostic
capabilities including four cause-of-trip LEDs mounted on the front
of the trip unit to improve troubleshooting capabilities. They are
complemented by trip event information that is stored in memory
after a trip condition. Remote breaker status indication is provided
by auxiliary and alarm switches. The Breaker Interface Module (BIM)
provides trip indication information on the front of the unit or via
relay contacts to a remote location.
Digitrip OPTIM has an extensive menu of monitoring capabilities
including load monitoring, power factor (OPTIM 1050), power and
energy (OPTIM 1050) power quality-current harmonics.
OPTIM trip units are PowerNet compatible and can be included
in the unique Eaton tripping PowerNet communications system.
Contact Eaton for specific applications and outline dimensions.
Figure 66. OPTIM bus plug
Figure 67. Bus plugs
Table 58. OPTIM breaker plug-in unit dimensions
OPTIM
breaker
frame
Maximum
amperes
Maximum
Vac
Dimensions in inches (mm) Mechanical terminal
A B C D E F
Wire range
per phase
Approx. weight
lb (kg)
K-Frame 400 600 34.40
(873.8)
19.30
(490.2)
11.46
(291.1)
12.42
(315.5)
3.77
(95.8)
7.86
(199.6)
350 A (1) 250–500 kcmil
400 A (2) 3/0–250 kcmil
59 (26.8)
L-Frame 600 600 41.90
(1064.3)
24.44
(620.8)
11.46
(291.1)
13.85
(351.8)
3.77
(95.8)
9.57
(243.1)
400 A (1) 4/0–600 kcmil
400 A (2) 400–500 kcmil
78 (35.4)
N-Frame 800 600 45.89
(1165.6)
29.65
(753.1)
11.46
(291.1)
17.46
(443.5)
3.77
(95.8)
9.66
(345.4)
700 A (2) 1–500 kcmil
800 A (3) 3/0–400 kcmil
141 (64.0)
Plug-in Opening
and B
Plug-In Opening
Handle
C
L
C
L
C
L
E
D
F
ON
OFF
A B
C