Bulletin 1492
Control Circuit and Load Protection
Product Overview
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3
Features
Bulletin
1489-A
480Y/
277V AC
0.5…25 A
240V AC
0.5…40 A
1489-D
1 Pole:
125V DC
2 Pole:
250V DC
For Class
CC Fuse
30 A
1492-FB
For Class J Fuse
30 A
60 A
For Midget
Fuse
30 A
140F
For Class
CC Fuse or For IEC 10 x
Midget
38 mm Fuse
Fuse
30 A
32 A
Lockable in the open
position
Compatible with Bulletin
140M accessories
Compact busbar and
connectors for Bulletin
100-C and 100-K
contactors
1 N.O./1 N.C auxiliary
contact— late make
N.O., early break N.C.
Type
2...40 A
4
5
Certifications
True IP2X finger-safe
design (front)
10 000 A interrupt
A postively trip-free
mechanism (breaker
operation cannot be
defeated by holding the
handle in the ON
position)
Superior shock and
vibration resistance
capabilties
Mounts on DIN Rail
IEC 60947-2
- 0.5...40 A @ 240, 415V
AC
- 15 000 A interrupting
Field-mountable options
Optional terminal for ring
lugs
True IP2X finger-safe
design (front)
A postively trip-free
mechanism (breaker
operation cannot be
defeated by holding the
handle in the ON
position)
Superior shock and
vibration resistance
capabilties
Mounts on DIN Rail
IEC 60947-2
Field-mountable options
Optional terminal for ring
lugs
EN/IEC 60529 Front Finger Protection — Dead front
construction
Handle isolates the fuse from line power when it is
opened for fuse insertion or removal
Compact size requiring less panel space than open
style fuse folders
Optional blown fuse indicators - allow for easy
troubleshooting of electrical circuits
Type M holder - accepts 0…30 A midget fuses (1-1/2
in. x 13/32 in.)
Type C holder - accepts 0…30 A Class CC fuses
Type J 30 & 60 A holders - accepts Class J fuses
Silver-plated fuse clips
Mounts on DIN Rail, marker-ready and increased heat
dissipation
UL 489 Listed (CSA C22.2 No. 5),
UL File Number E197878 VDE (IEC 60 947-2)
480Y/277V AC
480Y/
277V AC
UL 250V DC
IEC 500V DC
UL 512, CSA C22.2 No. 39, CE,
EN/IEC 60947-3
600V AC/DC
Type M, IEC - 690V AC
UR, CSA
UL 512, CSA C22.2 No.
39, CE, EN/IEC 60947-3
600V AC
690V AC
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7
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9
10
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12
13
Maximum
Voltage Rating
Shock
Tripping
Characteristic
Reference
Temperature
Tripping
Characteristic
Vibration
Operating
Temperature
Housing
Material
Working
Voltage
Leakage
Current with
Indicator LED
Wire Size
Interrupt
Rating
Product
Selection
25 G half sine wave for 11 ms (three axes)
UL/CSA: 104 ° F (40 °C)
IEC: 86 °F (30 °C)
C Curve: 5…10
D Curve: 10…20
C Curve: 5…10 ln
NA
NA
NA
5 G peak or 0.030 in. peak-to-peak displacement for 2
hours in each perpendicular direction. Vibration sweep
10 to 2000 to 10 Hz (15 minutes long)
-4...+130 °F (-20…+55 °C)
Nylon
110…600V
AC/DC or
12…72V
AC/DC
110…600V
AC/DC or
12…72V
AC/DC
NA
100...500 Hz for 1 hour
Amplitude — 10...57 Hz; 0.030 inches peak to peak;
57...500 Hz; 5 G peak
-13...+140 °F (-25...+55 °C),
non-condensing
Nylon
—
-4...+130 °F
(-20…+55 °C)
—
—
110…600V AC/DC
—
—
0.8...13 mm
2
/#18...6 AWG Cu
UL/CSA: up to 14 kA
IEC: up to 15 kA
Page 7-15
Page 7-31
2.0 mA
#16…4 AWG #14…1 AWG #10…1 AWG #16…4 AWG
Cu
Cu
Cu
Cu
200 kA
Fuse dependent
Page 7-39
50 kA
—
#16…10 AWG Cu
(1…4 mm
2
)
200 kA - Class CC
100 kA - Midget
Fuse dependent
Page 7-41
10 kA
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Preferred availability cat. nos. are bold.
7-2
Publication A117-CA001A-EN-P
Bulletin 1492
Control Circuit and Load Protection
Product Overview
0
1
Bulletin
Type
1492-MC
Branch Circuit Breaker
120/240V, 240V & 480Y/277V rating
1/2 in. per pole wide 10...60 A @
120/240V AC & 15...30 A @ 240V AC
IP2X finger-safe, built-in with 1/2 in.
wide, add protectors for 1 in. wide
Ratings to 480Y/277V AC, 10 000 A
interrupt ratings
Mounts on DIN Rail
1-, 2-, 3-pole
120/240V AC
240V AC
104 °F (40 °C)
UL 489 Standard (CSA 22.2 No. 5.1)
UL 489 Listed Circuit Breaker (CSA
22.2 No. 5.1)
UL File Number E197878
1960V AC
100...500 Hz for 1 hour
#14...1/0 AWG
UL 489 specifications
1492-MCGA, -MCEA
Ground Fault Detection
10 000 A interrupt
UL 489 Circuit breaker with ground
fault circuit interrupter and ground
fault equipment protector
Mounts on DIN Rail or panel mount
1492-SP
Miniature Circuit Breaker
Supplementary Protector
True IP2X finger-safe design (front)
Field mountable options for selective
applications
AC and DC voltage ratings in one
convenient device
Superior shock and vibration
resistance capabilities
Mounts on DIN Rail
1-, 2-, 3-pole
1-pole + neutral,
3-pole + neutral
480Y/277V AC
1-pole — 48V DC
2-pole — 96V DC
86 °F (30 °C)
B Curve 3...5 In
C Curve 5...10 In
D Cruve 10...20 In
UL 1077
CSA 22.2 No. 235
VDE (IEC 60898)
GL (60 947-2)
1960V AC
100...500 Hz for 1 hour
#18...4 AWG (1.0...25 mm
2
)
≥6000
operations
IEC 60898
10 kA @ 415V AC
IEC 60947-2
15 kA @ 415V AC
UL/CSA 10 kA U2
-22...+158 °F (-30…+70 °C)
Page 7-46
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10
11
12
13
Features
Number of Poles
1- and 2-pole with Neutral
Maximum Voltage
Tripping Characteristic
Reference Temperature
Tripping Characteristic
120/240V AC 60 Hz
104 °F (40 °C)
UL/CSA Standard
Certifications
Dielectric Strength
Shock
Vibration
Wire Size
Electromechanical Life
UL 489, 943 and 1053
CSA 22.2 No. 5.1
1960V AC
25 G half sine wave for 11 ms (3 axes)
100...500 Hz for 1 hour
#14...4 AWG 75°C (Cu only)
UL 489 specifications
Interrupt Rating
10 kA @ 240V AC
10 kA @ 120/240V AC
Operating Temperature
(non-condensing)
Product Selection
32...140 °F (0…+60 °C)
Page 7-6
32...140 °F (0…+60 °C)
Page 7-11
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Preferred availability cat. nos. are bold.
Publication A117-CA001A-EN-P
7-3
Bulletin 1492
Control Circuit and Load Protection
General Information
General Information
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Allen-Bradley offers two lines of Miniature Circuit Breakers with UL 489 (CSA 22.2 No. 5) certification, four different lines of Supplementary
Protectors (Miniature Circuit Breakers), and a line of fuse holders for branch circuit fuses and supplementary fuses.
Product Selection
Bulletin 1492-FB Fuse Holders
EN/IEC 60529 finger protection — dead front construction
Compact size requiring less panel space than open-style fuse holders
Optional blown fuse indicator
Branch circuit protection with Class CC and J fuses
UL Listed, CSA Certified
DIN Rail (35 mm), mounted
Bulletin 1492 Circuit Breakers
Potential applications include protection of:
Solenoids
Transformers
Computers
Power Supplies
Relay/contactor coils
PLCs
Medical Equipment
PLC I/O Points
UL1077, CSA C22.2 No. 235
— In North America, miniature circuit breakers are recognized as supplementary protectors and are intended for
use as overcurrent protection within an appliance or other electrical equipment where branch circuit protection is already provided or not
required. Internationally, these products are rated to IEC standards as miniature circuit breakers or circuit breakers for equipment.
UL508, CSA 22.2 No.14
— In North America, some miniature circuit breakers, meeting specific requirements, may be used as Manual Motor
Controllers for direct control of motors connected across-the-line equipment where branch circuit protection is already provided or not
required. Internationally, these products are rated to IEC standards as miniature circuit breakers and applied for motor controller applications
within those standards.
UL489, CSA 22.2 No. 5.1
— In North America, some miniature circuit breakers, meeting specific requirements, may be used as Branch
Circuit Protection devices for the protection of electric wiring as well as load protection.
Type
UL
CSA
Certifications
EN/IEC
CE Marked
No. of Poles
Volts AC
Volts DC
Current Range
Trip Characteristics
(In)
Energy Limiting
No. of Pole/foot
Mounting Method
IEC 529 and 60947 Finger Protection
Auxiliary Contacts
Optional
Shunt Trip
Undervoltage Trip
1492-GH
1077
22.2 No. 235
IEC 60934
Yes
1
250 V
65 V
0.2…15A
G 6…12
No
24
DIN Rail & A-B Rail
Yes
No
No
No
1492-GS
1077
22.2 No. 235
IEC 60934
Yes
1, 2, 3
480Y/277 V
65 V
0.2…25A
G 6…10
No
24
DIN Rail & A-B Rail
Yes
Yes
No
No
1492-SP
1077
22.2 No. 235
IEC 60898
IEC 60947-2
Yes
1, 2, 3 – 1+N, 3+N
480Y/277 V
1p 48V
2p (series) 125V
0.5…63A
B 3…5
C 5…10
D 10…20
Yes
17
DIN Rail
Yes
Yes
Yes
Yes
1492-MC
489
22.2 No. 5
—
No
1, 2, 3
120/240V AC
240V AC
—
15…100 A
UL 489 Standard
(CSA 22.2 No. 5.1)
No
Varies
DIN Rail
Varies
No
No
No
1489
489
22.2 No. 5
IEC 60947-2
Yes
1, 2, 3
480Y/277 V
up to 500V DC
0.5…40 A
B 3…5
C, 5…10
D 10…20
Yes
17
DIN Rail
Yes
Yes
Yes
Yes
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Preferred availability cat. nos. are bold.
7-4
Publication A117-CA001A-EN-P
Bulletin 1492
Control Circuit and Load Protection
General Information
Technical Information: The Benefits of Limiting Let-Through Energy
Energy Limiting Circuit Breakers Versus Conventional Breakers
The Bulletin 1492-SP line features the unique ability to achieve short circuit interruptions far more effectively than conventional circuit
breakers. In
conventional circuit breakers,
the short circuit interruption time required is approximately one or two half cycles of an AC sine
wave. When the contacts are open, the resulting arc continues to burn until the current level passes through zero. The arc may re-ignite
because of the insufficient width of the contact gap. The current that flows until the arc is extinguished produces a heating effect proportional
to the
I
2
t value (let-through-energy) of the fault current.
These devices are designed to substantially reduce the amount of
let-through-current
and the resulting let-through-energy that can damage
protected components. They have the ability to interrupt short circuit current within the first half cycle of the fault. Limiting let-through-energy
will protect against the harmful effects of over-current and is focused primarily on avoiding the following:
Excessive heat
Mechanical damage
Both of these factors are proportional to the square of the current. Thermal energy is proportional to the square of the RMS value and
magnetic forces are proportional to the square of the peak value. The most effective way to provide protection is to subtantially limit
let-
through-energy.This
provides the following advantages:
Far less damage at the location of the short circuit.
Fast electric separation of a faulty unit from the system, especially power supplies connected in parallel that are switched off when the
voltage of the power bus drops below a certain level.
Far less wear on the miniature circuit breaker itself. This means more safe interruptions.
Better protection of all components in the short circuit path.
Far wider range of selective action when used with an upstream protective device. (No nuisance shut downs from feeder line interruptions
causing a blackout in all connected branches.)
0
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Short Circuit Interruption 10 kA - 120V AC
Instant of initiation: 15˚ after voltage zero
Voltage Across Breaker
Max Arc Voltage
Recovery Voltage
7
8
9
Current
A
B
C
A B C
A = Instant when the short is initiated
B = Instant when the contacts open and the arc is initiated
C = Instant when the arc extinguished and the current ceases to flow
10
11
3,500 A
2
S
Let through |
2
t
79,000 A S
2
12
13
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Publication A117-CA001A-EN-P
7-5
Bulletin 1492-MC
Circuit Breaker
Product Overview/Description
Bulletin 1492-MC Circuit Breakers
Industrial Circuit Breakers for North American Applications
The Bulletin 1492-MC line includes:
1/2 in. wide circuit breakers
1 in. wide circuit breakers
Ground Fault Circuit Interrupters (GFCIs)
Ground Fault Equipment Protector (GFEPs)
Table of Contents
AC DIN Rail
Mounting ....................... 7-11
Specifications.............. 7-12
Product Selection ...... 7-12
Approximate
Dimensions................... 7-13
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Features
Designed, manufactured and listed to UL 489 (CSA C22.2, No. 5)
Thermal-magnetic protection
All Ratings (10…100 A) are HACR rated
10 kAIC (10…100 A)
Finger-safe design (front) (1/2 in. wide)
DIN Rail mounting (120/240 & 240V AC)
Three-position handle (ON, Tripped (Middle), OFF)
(Line and load) wire connections
Certifications
UL Listed
CSA Certified
Standards Compliance for
Bul. 1492-MC
UL 489
CSA C22.2 No. 5
HACR (10...100 A)
SWD (15 and 20 A) for Switching Duty for
flourescent lighting applications
Standards Compliance for GFCI
(5 mA trip sensitivity)
UL 943
CSA C22.2 No. 144
Standards Compliance for GFEP
(30 mA trip sensitivity)
UL 1053
CSA C22.2 No. 144
Bulletin 1492-MC Thermal Magnetic Description
Thermal Magnetic Circuit Breakers
Bulletin 1492-MC Circuit Breakers for Branch Circuit protection are
available in one (1)-, two (2)-, and three (3)-pole construction in
120/240 volt rating, 240 volt rating and as one (1)-pole and two (2)-
pole devices in 480/277 volt rating. Versions are available as Ground
Fault Circuit Interrupters and as Ground Fault Equipment Protectors.
The 1492-MC product line consists of Thermal Magnetic Circuit
Breakers and Ground Fault Sensing Breakers that are designed,
manufactured, and certified to North American standards, UL 489,
UL 943, UL1093, and the equivalent CSA standards, CSA 22.2 No.
5.1, 22.2 No. 144.
Bul. 1492-MC Thermal Magnetic Circuit Breakers are general-
purpose devices suitable for the majority of industrial, inverse time
circuit breaker applications.
They combine thermal and magnetic trip actions and provide
accurate overload and short-circuit protection for conductors and
connected equipment.
Circuit Frequency
Bul. 1492-MC circuit breakers may be applied to frequencies from
DC up to 60 Hz without derating. For applications above 60…400
Hz, contact Rockwell Automation with specific application
information for the derating of the circuit breakers.
Available Short Circuit Current
Bul. 1492-MC circuit breakers should only be applied in those
applications in which the available short-circuit (or fault) current is
less than or equal to the interrupting rating shown in the Voltage and
Interrupting Ratings table.
Table 1. Voltage and Interrupting Ratings
Interrupting Ratings (rms
Symmetrical Amperes)
AC Voltage
120/240
DC Voltage
1
24, 48, 62.5
24, 48, 62.5
10,000
120/240
240
120
120/240
120
120/240
1
Rating as supplementary protector.
AC Rating
DC Rating
1
3,000
3,000
Cat. No.
1492-MCAA1xx
1492-MCAA2xx
1492-MCAA2Hxx
1492-MCAA3xx
1492-MCBA1xx
1492-MCBA2xx
1492-MCBA2Hxx
1492-MCBA3xx
1492-MCEA1xx
1492-MCEA2xx
1492-MCGA1xx
1492-MCGA2xx
Circuit Breaker Application Information
Selection of a Bul. 1492-MC circuit breaker with appropriate circuit
protection includes consideration of:
Circuit voltage
Circuit frequency
Available short circuit current
Continuous current rating
Application considerations
Special operating conditions
The following discussion is based upon National Electric Code and
UL requirements. Similar considerations are appropriate for
Canadian applications.
240
10,000
Circuit Voltage
Bul. 1492-MC circuit breakers are rated by voltage class.
Applications should not exceed the listed voltage range (see Table
1).
Consult your local Rockwell Automation sales office or Allen-Bradley
distributor for specific rating.
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7-6
Publication A117-CA001A-EN-P
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