Molded Case Circuit Breakers |
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Series G molded case circuit breakers
provide increased performance in
considerably less space than standard circuit
breakers or comparable fusible devices. The
"G" signifies global applications: Series G
circuit breakers are marked with UL, CSA,
CE, IEC and KEMA, KEUR listings.
The EG frames are designed around spacesaving
footprints. Series G circuit breakers
meet applicable UL 489 and IEC 60947-2
standards. The G family includes five frame
sizes in ratings from 15 to 100 amperes.
Series G offers a choice of several
interrupting capacities up to 18 kA at 415
and 480 Vac. Standard calibration is 40°C.
The flexibility and outstanding performance
characteristics of the circuit breakers are
made possible by the best contact designs in
circuit breaker history. Our technology
creates a high-speed "blow-open" action
using the electromechanical forces produced
by high-level fault currents.
These circuit breakers are operated by a
toggle-type mechanism that is mechanically
trip-free from the handle so that the contacts
cannot be held closed against short circuit
currents. Tripping due to overload or short
circuits is clearly indicated by the position on
the handle. This remarkably fast and
dependable contact action is designed to
enhance safety.
The quality, dependability and reliability of
every circuit breaker is ensured by a
thorough program of in-plant testing. Two
calibration tests are conducted on every pole
of every circuit breaker to verify the trip
mechanism, operating mechanism,
continuity and accuracy.
Circuit breakers are current limiting because
of their high repulsion contact arrangement
and use of state-of-the-art arc extinguishing
technology. Omega offers one of the most
complete lines of current limiting breakers in
the industry.
Circuit Breakers have a toggle handle
operating mechanism, which also serves
as a switching position indicator. The
indicator shows the positions of: ON, OFF
and TRIPPED.
The toggle handle snaps into the TRIPPED
position if the breaker is tripped by one of its
overcurrent, short circuit, shunt or
undervoltage releases. Before the circuit
breaker can be reclosed following a trip-out,
the toggle handle must be brought beyond
the OFF position (RESET). The circuit
breaker can then be reclosed.
As an additional switching position indicator
for EG- Frame circuit breakers, there are two
windows on the right and on the left of the
toggle handle, in which the switching state is
indicated by means of the colors red, green
and white corresponding to the ON, OFF and
TRIPPED positions respectively.
SPECIFICATION
Number of Poles: 3
BREAKER CAPACITY (KA RMS) AC 50 TO 60 HZ NEMA, UL, CSA:
240 Vac: 25
480 Vac: 18
IEC60947-2:
Icu 220 to 240 Vac: 25
Icu 380 to 425 Vac: 18
Ampere Range: 15 to 100 A
Trip Units: FT-FM (fixed thermal - fixed magnetic)
Dimensions: 139.7 H x 76.2 W x 76mm D (5.5 x 3.0 x 2.9")
Weight: 1.4 kg (3.1 lbs)
Utilization Category: A
ELECTRICAL CHARACTERISTICS
Maximum Rated Current: 100 A
Rated Insulation Voltage U, According to IEC 60947-2: Main Conducting Paths: 690 Vac
Auxiliary Circuits: 690 Vac
Rated Impulse Withstand Voltage Uimp:
Main Conducting Paths: 6 kV
Auxiliary Circuits: 4 kV
Rated Operational Voltage Ue:
IEC: 690 Vac
NEMA: 600 Y/347 Vac
UL and CSA Listed: Yes
Permissible Ambient Temperature: -20 to 70°C (-4 to 158°F)
PERMISSIBLE LOAD FOR VARIOUS AMBIENT TEMPERATURES CLOSE TO THE CIRCUIT BREAKER, RELATED TO THE RATED CURRENT OF THE CIRCUIT BREAKER:
| Circuit Breakers for Plant Protection: |
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| | Thermal overload release set to the lower value | Thermal overload release set to the upper value |
| At 40°C: | 100% | 100% |
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| At 50°C: | 96% | 92% |
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| At 55°C: | 93% | 87% |
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| At 60°C: | 91% | 83% |
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| At 70°C: | 86% | 73% |
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| Circuit Breakers for Starter Combinations and Isolating Circuit Breakers: |
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| At 40°C: | 100% |
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| At 50°C: | 100% |
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| At 55°C: | 96% |
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| At 60°C: | 91% |
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| At 70°C: | 86% |
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RATED SHORT CIRCUIT BREAKING CAPACITY (DC) NOT FOR CIRCUIT BREAKERS FOR MOTOR PROTECTION (TIME CONSTANT = 10 RMS):
2 Conducting Paths in Series:
For EG up to 250 Vdc: 42 kA Max
NEMA (Time Constant = 8 rms) 2 Conducting Paths in Series: 250 Vdc 42 kA Max
Main Switch Characteristics According to IEC 60947-2 in Combination with Lockable Rotary Drives: Yes
Rated Short Circuit Breaking Capacity According to IEC 60947-2 (at AC 50/60 hz): Rated short circuit breaking capacity
Endurance (Operating Cycles): 10,000
Maximum Switching Frequency: 300 1/h
Conductor Cross Sections and Terminal Types for Main Conductors: Box Terminals
Solid or Stranded: 2.5 to 95 mm2
Finely Stranded with End Sleeve: 2.5 to 50/70 mm2
Tightening Torque for Box Terminals: 5.6 Nm
Tightening Torque for Bus Bar Connection Pieces: 5.6 Nm
CONDUCTOR CROSS SECTIONS FOR AUXILIARY CIRCUITS WITH TERMINAL CONNECTION OR TERMINAL STRIP
Solid or Finely Stranded with End Sleeve: 0.75 to 2.5 mm2
POWER LOSS PER CIRCUIT BREAKER AT MAXIMUM RATED CURRENT LN (THE POWER LOSSES OF THE UNDERVOLTAGE RELEASES ("R" RELEASES) MUST BE OBSERVED IF NECESSARY) AT THREE-PHASE SYMMETRICAL LOAD)
For Plant Protection, As Isolating Circuit Breaker, For Starter Combinations: 40 W
AUXILIARY SWITCHES
Rated Thermal Current lth: 6 A
Rated Making Capacity AC (AC-15): 20 A
Rated Operational Voltage: 230/400/600V
Rated Operational Current DC (DC-13): 6/3/0.25 A
Rated Operational Voltage: 125/250V
Rated Operational Current: 0.5/0.25 A
Backup Fuse: 6/4/4 A
Miniature Circuit Breaker: 6/4 A
RELEASES
Undervoltage releases ("r" Releases) Response Voltage:
Drop (Breaker Tripped) Us: 35 to 70%
Pickup (Breaker May Be Switched On) Us: 85 to 110%
Power Consumption in Continuous Operation at:
50/60 Hz 12 Vac: 0.95 VA
50/60 Hz 24 Vac: 0.72 VA
50/60 Hz 48 to 60 Vac: 1.15 to 1.78 VA
50/60 Hz 110 to 127 Vac: 0.96 to 1.25 VA
50/60 Hz 208 to 240 Vac: 1.28 to 1.68 VA
50/60 Hz 380 – 500 Vac: 2.2 to 3.9 VA
12 Vdc: 0.88 W
24 Vdc: 0.70 W
48 to 60 Vdc: 1.12 to 1.76 W
110 to 125 Vdc: 0.94 to 1.21 W
220 to 250 Vdc: 1.45 to 1.86 W
Maximum Opening Time: 50 ms
SHUNT TRIPS
Shunt Trips ("f" Releases) Response Voltage:
Pickup (Breaker Tripped) Us Power Consumption in (Short Time) at:
50/60 Hz 24 Vac: 10 to 41 VA
50/60 Hz 48 to 60 Vac: 139 to 210 VA
50/60 Hz 48 to 127 Vac: N/A
50/60 Hz 110 to 240 Vac: 83 to 360 VA
50/60 Hz 380 to 440 Vac: N/A
50/60 Hz 380 to 600 Vac: 418 to 1080 VA
12 to 24 Vdc: 29 to 120 W
48 to 60 Vdc: 475 to 720 W
110 to 125 Vdc: 99 to 121 W
220 to 250 Vdc: N/A
Maximum Load Duration: Interrupts automatically
Maximum Opening Time: 50 ms
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† Price are shown in RMB.
Note: Comes with complete operators manual.
Ordering Example: (1) EGB3015FFG 15 A circuit breaker, ¥8,690.00, plus (1) EHMVD12B Variable depth handle, ¥1,415.00, ¥8,690.00 + 1,415.00 = $10,105.00
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