Catalogs > Industrial Controls Catalog > Control Circuit and Load Protection > Miniature Circuit Breakers / Supplemental Protectors > High Density Supplementary Protectors (Miniature Circuit Breakers)
High Density Supplementary Protectors (Miniature Circuit Breakers)
Product Selection
1492-GH
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1492-GS
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Using selection table below, select Bulletin 1492-GH/GS that allows full load current nearest without exceeding application current. Also, check that inrush current is less than trip range of 6…10 In.
1492-GH/GS
| Build a Catalog Number |
To select a miniature circuit breaker, use the following procedure:
1. Determine the inrush correction factor from the following table.
| Inrush Ratio Correction Table | |||||
| Inrush Ratio | 1:1 to 1:4 | 1:5 | 1:6 | 1:7 | 1:8 |
| Factor | 1.3 | 1.4 | 1.5 | 1.6 | 1.7 |
Note:For resistive loads use inrush correction factor of 1.0.
2. Determine the temperature correction factor from the following table.
| Ambient Temperature Correction Table | |||||||
| Ambient Temperature | 70 °F (21.1 °C) |
100 °F (37.8 °C) |
120 °F (48.9 °C) |
140 °F (60 °C) |
160 °F (71.1 °C) |
180 °F (82.2 °C) |
200 °F (93.3 °C) |
| Factor | 1.0 | 1.1 | 1.2 | 1.3 | 1.4 | 1.5 | 1.6 |
3. Determine the sealed current of the load being protected.
4. Multiply the sealed current by the two correction factors and select the closest higher ampere rating.
Example — For a solenoid with sealed current of 0.5 A, an inrush ratio of 1:8, and an ambient temperature of +110 °F (43.7 °C), (0.5 x 1.7 x 1.15 = 0.9775), select the 1.0 A miniature circuit breaker. Tripping time of the miniature circuit breaker is determined from the table below. Divide the miniature circuit breaker value by the temperature correction factor from the Ambient Temperature Correction Table above to determine the actual rated current referenced in the table below.
| Tripping Times in Seconds at 70 °F (21.1 °C) | ||||||||
| Percent Rated Current |
100% | 200% | 300% | 400% | 500% | 600% | 1000% | 2000% Greater |
| Tripping Times (Seconds) |
No Trip | 10…40 | 3…18 | 1.5…9 | 0.8…6 | 0.003…4 | 0.009…2 | Max. 0.02 |
Note: When several breakers are rail mounted adjacent to each other, the no-trip current will be 80% of rated current at 70 °F (21.1 °C).
| Amperage [A] | 1492-GH | 1492-GS | ||
| 1-Pole | 1-Pole | 2-Pole | 3-Pole | |
| Cat. No. | Cat. No. | Cat. No. | Cat. No. | |
| 0.2 | 1492-GH002 | 1492-GS1G002 | 1492-GS2G002 | 1492-GS3G002 |
| 0.5 | 1492-GH005 | 1492-GS1G005 | 1492-GS2G005 | 1492-GS3G005 |
| 0.8 | 1492-GH008 | 1492-GS1G008 | 1492-GS2G008 | 1492-GS3G008 |
| 1.0 | 1492-GH010 | 1492-GS1G010 | 1492-GS2G010 | 1492-GS3G010 |
| 1.2 | 1492-GH012 | 1492-GS1G012 | 1492-GS2G012 | 1492-GS3G012 |
| 1.5 | 1492-GH015 | 1492-GS1G015 | 1492-GS2G015 | 1492-GS3G015 |
| 2.0 | 1492-GH020 | 1492-GS1G020 | 1492-GS2G020 | 1492-GS3G020 |
| 2.5 | 1492-GH025 | 1492-GS1G025 | 1492-GS2G025 | 1492-GS3G025 |
| 3.0 | 1492-GH030 | 1492-GS1G030 | 1492-GS2G030 | 1492-GS3G030 |
| 4.0 | 1492-GH040 | 1492-GS1G040 | 1492-GS2G040 | 1492-GS3G040 |
| 5.0 | 1492-GH050 | 1492-GS1G050 | 1492-GS2G050 | 1492-GS3G050 |
| 6.0 | — | 1492-GS1G060 | 1492-GS2G060 | 1492-GS3G060 |
| 7.0 | 1492-GH070 | 1492-GS1G070 | 1492-GS2G070 | 1492-GS3G070 |
| 8.0 | — | 1492-GS1G080 | 1492-GS2G080 | 1492-GS3G080 |
| 10.0 | 1492-GH100 | 1492-GS1G100 | 1492-GS2G100 | 1492-GS3G100 |
| 12.0 | — | 1492-GS1G120 | 1492-GS2G120 | 1492-GS3G120 |
| 15.0 | 1492-GH150 | 1492-GS1G150 | 1492-GS2G150 | 1492-GS3G150 |
| 16.0 | — | 1492-GS1G160 | 1492-GS2G160 | 1492-GS3G160 |
| 20.0 | — | 1492-GS1G200 | 1492-GS2G200 | 1492-GS3G200 |
| 25.0 | — | 1492-GS1G250 | 1492-GS2G250 | 1492-GS3G250 |
| Adding Auxiliary Contact | — | Add suffix — H1 for N.O. aux. One aux. may be installed in all devices. |
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| Pieces Per Carton | 1 | |||