Circuit Protection

Bulletin 1492
Circuit Protection
Supplementary Protectors (Miniature Circuit Breakers), Continued
1492-GS, Continued
Specifications ➊
Cat. No.
1492-GS
High-density miniature circuit breaker (supplementary protector) with universal mounting foot for
Allen-Bradley and DIN Rail mounting
Description
277/480V AC 50/60 Hz
65V DC
Maximum Voltage Ratings
Standard Current Ratings
Internal Resistance per Pole
A
Ω
0.2 0.5 0.8
26 4.2 1.6
1.0
1.1
1.5
0.47
2.0
0.25
Dielectric Strength
Shock and Vibration
Specifications
Insulation Resistance
Current Capacity of Auxiliary
Contacts (N.O., N.C.)
Voltage Rating of Auxiliary
Contacts
Operating Life
Temperature Range
Wire Size
Recommended Wire
Strip Length
Recommended Tightening
Torque
2.5
0.20
3.0
0.13
4.0
0.08
5.0
0.06
6.0
0.05
8.0 10.0 12.0 15.0 16.0 20.0 25.0
0.01 0.01 0.01 0.01 0.01 0.005 0.004
1960V AC
Shock: 25 G, 11 ms duration
Vibration: 5 G (10…500 Hz)
Greater than 100 MΩ @ 500V DC
1.0 A AC or DC (resistive load)
277V AC
65V DC
6000 cycles @ rated current (UL 1077)
–40…+149°F (–40…+65°C)
#22…#10 AWG (0.5…6 mm2)
0.51" (13.0 mm) for Mail Terminals
0.41" (10.4 mm) for Auxiliary Terminals
5 lb-in. (0.565 Nm)
➊ Performance Data — See Publication A113, page Important-2.
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Bulletin 1492
Circuit Protection
Supplementary Protectors (Miniature Circuit Breakers), Continued
1492-GS, Continued
Approvals
• UL 1077
• CSA 22.2 NO. 235
• VDE 0631 (IEC 60934)
In North America, the Cat. No. 1492-GS Miniature Circuit Breaker is rated as a Supplementary Protector with a short-circuit current
rating. Internationally, it is rated by IEC as a Circuit Breaker for Equipment with an interrupt rating
Electrical Characteristics
Voltage Rating
Short-Circuit Current Rating ➊
Interrupt Rating Icn (IEC only)
Poles
Rated Current (A)
1
0.2…5
277
—
1
6…25
277
—
0.7 kA, U2
2, 3
0.2…5
277/480
—
0.4 kA, U2
AC
DC
UL 1077 Supplementary Protector Rating
0.4 kA, U2
2, 3
6…25
277/480
—
0.5 kA, U2
1, 2, 3
0.2…5
—
65
0.4 kA, U2
1, 2, 3
6…25
—
65
0.8 kA, U2
1
0.2…16
277
—
5 kA, C1
1
18…25
277
—
2 kA, C1
2, 3
0.2…16
277/480
—
5 kA, C1
2, 3
18…25
277/480
—
2 kA, C1
1
0.2…25
—
65
2 kA, C1
CSA 22.2 #235 Supplementary Protector Ratings
1
0.2…16
277
—
5 kA, C1
1
18…25
277
—
2 kA, C1
2, 3
0.2…16
277/480
—
5 kA, C1
2, 3
18…25
277/480
—
2 kA, C1
1
0.2…25
—
65
2 kA, C1
IEC 60934 Circuit Breaker for Equipment Ratings
1
0.2…5
250
—
1
6…25
250
—
0.4 kA
0.8 kA
2, 3
0.2…5
240/415
—
0.4 kA
2, 3
6…25
240/415
—
0.8 kA
1
0.2…5
—
65
0.4 kA
1
6…25
—
65
0.8 kA
➊ The short-circuit current rating is followed by a letter and number designating the test conditions and any calibrations and dielectric tests following
the short-circuit test. These designations are defined as follows (see ➋ also):
C — Indicates that the short-circuit test was conducted with series overcurrent protection
U — Indicates that the short-circuit test was conducted without series overcurrent protection
1 — Indicates that a recalibration and dielectric test was not conducted as part of the short-circuit test
2 — Indicates that a recalibration and dielectric test was conducted as part of the short-circuit test
➋ These alphanumeric designations were established by UL. CSA has not yet adopted them; however, the test conditions are equivalent to UL
and the coding is appropriate.
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