Omega Products AU-1C03DL User Manual

CirCuit Breakers
for BranCh CirCuit
ProteCtion

uL 489 aC & DC CirCuit Breakers
Miniature MCCB, CirCuit Breakers

UL Series

E301611

Pending

• DIN Rail Mounted

• Disconnect and Switching Function

• 17.5 mm (0.69") Width per Pole

• Thermal Magnetic and

Curent Limiting

• Available in AC and DC

• 240V, 480Y/277 Vac, 50/60Hz

• 125 Vdc (1-Pole), 250 Vdc (2-Pole)

• 10kA Short Circuit

Interrupting Capacity

• HACR Type 40°C (104°F)

• Line/Load Reversible

The UL 489 Series miniature molded case
circuit breakers are DIN rail mountable and
provide feeder and branch circuit protection
per UL 489. Circuit breakers can be reset and
reused over and over again, when compared
with a standard fuse that must be replaced
and discarded in compliance with special
disposal procedures. Typical uses include
convenience receptacles, motor controls,
load circuits leaving equipment, and heating
and air conditioning.

UL 489 Series miniature circuit breakers are
available in one-, two-, three- and four-pole
configurations and up to 23 different current
ratings from 0.3A to 63A and can safely be
used in applications up to 480Y/277 Vac
with a 10kA short circuit withstand rating.
Two levels of circuit protection available,
one for medium inrush startup currents to
provide protection for small transformers,
pilot devices, etc., and one with a magnetic
range to allow for higher inrush levels during
startup usually seen with motors. These
molded case circuit breakers are Din rail
mounted and, at only 17.5 mm wide, they are
extremely compact and reduce panel size.

DIN rail sold separately.
Visit omega.com/drtb-rail

For

Terminal

Blocks and
Enclosures. Visit
omega.com/auto

Accessories are field mounted on the UL
489 series circuit breakers for enhanced
control and monitoring capabilities. Field
mounting kits include all necessary parts
and instructions. Accessories can be gang
mounted on a single controller (the auxiliary
switch in the outside position). The mounting
arrangement links the internal latch-pins
for the tripping mechanisms, ensuring
simultaneous trips. Handles are linked to
simplify manual resetting. Accessories
include neutral pole, shunt and undervoltage
trip and auxiliary contacts.

AU-1C15UL, one pole

AC circuit breaker,

15 Amp C-trip curve.

AU-3C15UL, 3-pole
circuit breaker, 15 Amp
C-trip curve.

Applications

AC C-Trip Curve

Low inrush motors, resistive loads, wiring
protection, receptacles, lighting, and control
circuit applications. Relatively short thermal
trip delay and medium magnetic trip point.

AC D-Trip Curve

High inrush motors, transformers, power
supplies, heaters and reactive loads.
Relatively long thermal trip delay and very
high magnetic trip point.

DC C and D-Trip Curves

Telecommunication equipment, computer
equipment, uninterruptable power supplies.

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SPECIFICATIONS

Current/Voltage Rating:

AC: 0.3-63A – 240 Vac
AC: 0.3-32A 480Y/277 Vac
DC: 0.3-63A 125 Vdc 1-pole - 250 Vdc

2-pole

Electrical Life: 6000 cycles on/off
Mechanical Life: 10,000 cycles on/off
Calibration Temperature: 40°C (104°F)
Operating Temperature: -25 to 55°C

(-13 to 131°F)
Storage Temperature: -25° to 70°C

(-13° to 158°F)
Wire Connection: Copper wire only,

60/75°C

Short Circuit Interrupt Rating

NO. POLES TYPE 0.3-32 AMPS 40-63 AMPS

1

2-3

1

2

AC 10kA@120, 240, 277 V 10kA @120, 240V

AC 10kA@120, 240, 480Y/277 V 10kA @120, 240V

DC 10kA @ 125V 10kA @ 125V

DC 10kA @ 250V 10kA @ 250V

Short Circuit Interrupt Rating according to IEC 60947-2, DIN EN 60947-2

NO. POLES TYPE 0.3 - 32 AMPS 40-63 AMPS

1

2-3

Terminal Size Acceptability: Top 18-3
AWG, Bottom18-2 AWG

Tightening Torque Minimum/Maximum:

17.7/ 22lb-in. (2/2.2 Nm)
Terminal Protection Degree: IP20

AC 15kA @ 240V 15kA @ 240V

AC 15kA @ 415V 10kA @ 415V

Dimensions:
Height: 105.3mm (4.15")
Width: One Pole 17.5mm (0.69"), 2 Pole

35mm (1.38"), 3 Pole 52.5 mm (2.07")
Depth: From Din rail 68.4 mm (2.69")

Dimensions: mm (in)

36.5 (1.43) 36.8 (144)

17.5 (.69)

1 Pole

35 (1.37)

2 Pole

52.5 (2.06)

3 Pole

Trip-Characteristics* Applications

Characteristic Trip Boundaries

Thermal Trip

Must not

Trip>100ms

Must Trip

<1hr

Magnetic Trip

Must not

Trip>100ms

Must Trip

at 100ms

Lighting

Wiring

Protection

Control

Circuits

Business

Equipment

Appliances

Transformers

Power

Supplies

Heaters

Inrush

Low

Motors

High

Inrush

105.3 (4.14)

52.5 (20.06)

14.5 (.57)

Reactive

51.5 (20.02)

37.5 (1.47)

25.5 (1.0)

67

34.5 (1.35)

8

(.314)

30.5 (1.2)

51.5 (2.02)

Telecommu-

Load

4

(.157)

68.4 (2.7)

nications/

Computer

Equipment

45 (1.77)

Power

Supplies

C-Characteristics AC

1.05xRC1.35xRC 5xRC 10xRC

C-Characteristics DC

1.05xRC1.35xRC 7xRC 14xRC

D-Characteristics AC

1.05xRC1.35xRC 10xRC 16xRC

D-Characteristics DC

1.05xRC1.35xRC 14xRC 22.4xRC

* The value of each characteristic is shown vertically beneath its corresponding heading.

Warning!

This information should only be used as a selection guide. The use of a Miniature Circuit Breaker in an application with a certain
Trip-Characteristic always requires prototype testing. It is the responsibility of the circuit design engineer to select the appropriate Miniature

Circuit Breaker for his specific application.

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