High Density Supplementary Protectors (Miniature Circuit Breakers)
| Product Overview |
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Bulletin 1492-GH and 1492-GS — Supplementary Protectors
(Miniature Circuit Breakers)
- High density design allows 24 one-pole breakers per foot
- Wide range of currents for precise circuit requirements
- International approvals — meet UL, CSA, and EN/IEC standards for worldwide acceptance
- CE Marked
- AC and DC voltage ratings — in one convenient device
- A positively trip free mechanism (breaker operation cannot be defeated by holding the handle in the ON position)
- Superior shock and vibration resistance capabilities — helps prevent nuisance tripping
- Universal mounting foot for a variety of mounting channels, including Cat. No. 1492-N1 and various 35 mm DIN (e.g., Cat. No. 199-DR1)
Bulletin 1492 high density miniature circuit breakers are thermal magnetic type supplementary overcurrent protective devices. Bulletin 1492-GH miniature circuit breakers are available in one-pole units. Bulletin 1492-GS are available in one-, two-, and three-pole. These breakers are often used when panel space (width) is a premium. These products include a high density design. Up to 24 one-pole breakers can be mounted per foot. The Bulletin 1492-GS breaker can be ordered with auxiliary contacts that do not add any additional space. Wire termination is achieved by a clamping style, self-lifting box lug.
One-Pole Style Bulletin 1492-GH
This single-pole, high-density miniature circuit breaker incorporates a thermal portion and a magnetic trip function for the combined advantages of two sensing systems. The Bulletin 1492-GH breaker style uses a push-to-set mechanism for circuit actuation and comes with a manual trip button for manually opening the circuit. Voltage range is 250V AC, and this breaker has a 65V DC rating.
One-, Two-, and Three-Pole Style Bulletin 1492-GS
These high-density miniature circuit breakers incorporate a thermal portion and a magnetic trip function for the combined advantages of two sensing systems. The Bulletin 1492-GS style of breakers uses a toggle style handle mechanism for circuit actuation. Voltage range is 277V AC for the one-pole and 480Y/277V AC for the multiple pole. These breakers have a 65V DC rating.
Applications
The high-density miniature circuit breaker appliations include, but not limited to, the protection of test equipment, control instrumentation, solenoids, and power supplies. The wide range of current values and the use of a thermal magnetic trip system allows for a variety of applications where a very accurate and compact breaker is required.
UL1077, CSA C22.2 #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 circuit breakers for equipment (CBE).
Standards Compliance
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UL 1077
CSA C22.2 No 235
EN/IEC 60934
Certifications
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UL Recognized Component
CSA Recognized Component
CE Marked
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 | |||
Specifications
| 1492-GH | 1492-GS | |||
| 1-Pole | 1-Pole | 2-Pole | 3-Pole | |
| UL/CSA | 200 A (Not to exceed 100 x rated A) |
0.2…16 A | 5 kA C1 (2 kA C1 for 65V DC — 1-pole) | |
| 18…25 A | 2 kA C1 | |||
| EN/IEC 60934 (CBE) | 0.2…5 A | 400 A | ||
| 6…25 A | 800 A | |||
| Maximum Voltage Ratings | 250V AC 50/60 Hz 65V DC |
480Y/277V AC 50/60 Hz 65V DC |
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| Temperature Range | –40…+149 °F (–40…+65 °C) non-condensing | |||
| Operating Life | 6000 operations @ rated current | |||
| Housing Material | Glass-filled Polyamide 6.6 | |||
| Shock | 25 G, 11 ms duration | |||
| Vibration | 5 G (10…500 Hz) | |||
| Dielectric Strength | 1500V AC | 1600V AC | ||
| Insulation Resistance | 100 M W @ 500V DC | |||
| Terminal Type | Tubular Screw with self-lifting box lug | |||
| Wire Size | #22…10 AWG | |||
| Recommended Wire Strip Length | 0.44 in. (11.2 mm) | Main Term — 0.51 in. (13 mm) Aux Term — 0.41 in. (10.4 mm) | ||
| Terminal Torque | 1.3…1.4 N•m (10…12 lb•in) | 0.656 N•m (5 lb•in) | ||
| Auxiliary Contact rating (N.O. or N.C.) | 1.0 A AC or DC (Resistive Load) | |||
Approximate Dimensions
Dimensions are in inches (millimeters). Dimensions are not intended for manufacturing purposes.
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| 1492-GH | 1492-GS | |||
| 1-Pole | 1-Pole | 2-Pole | 3-Pole | |
| Height | 3.15 in. (80 mm) | 3.15 in. (80 mm) | ||
| Depth | 2.89 in. (73.4 mm) | 3.48 in. (88.5 mm) | ||
| Width | 0.49 in. (12.4 mm) | 0.49 in. (12.5 mm) | 0.98 in. (25 mm) | 1.47 in. (37.5 mm) |