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RGE Selection Guide and Product Data
This section has two parts: • A Selection Guide that walks you through the process of selecting the correct RGE device for a circuit. • Product Data that outlines electrical characteristics, physical characteristics, agency recognitions, environmental specifications, component layouts, tape and reel specifications, and ordering information for RGE devices.
RGE Selection Guide
Follow these seven steps to select a PolySwitch RGE device for a circuit: 1. Define the operating parameters for the circuit. These include: • Maximum ambient operating temperature • Normal operating current • Maximum operating voltage (RGE is 16 V maximum) • Maximum interrupt current 2. Select the RGE device that accommodates the circuit’s maximum ambient operating temperature and normal operating current. 3. Compare the RGE device’s maximum operating voltage and maximum interrupt current with the circuit’s to be sure the circuit does not exceed the device ratings. 4. Check the RGE device’s time-to-trip be to sure it will protect the circuit. 5. Verify that the circuit’s ambient operating temperatures are within the RGE device’s operating temperature range. 6. Verify that the RGE device’s dimensions fit the application’s space considerations. 7. Independently evaluate and test the suitability and performance of the RGE device in the application.
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TUV Rheinland
Raychem Circuit Protection Devices
RGE Devices
129
RGE
Radial Leaded
1. Define the circuit’s operating parameters.
Fill in the following information about the circuit: Maximum ambient operating temperature Normal operating current Maximum operating voltage (RGE is 16 V max.) Maximum interrupt current ______________ ______________ ______________ ______________
2. Select the PolySwitch RGE device that will accommodate the
circuit’s maximum ambient operating temperature and normal operating current. Look across the top of the table below to find the temperature that most closely matches the circuit’s maximum ambient operating temperature. Look down that column to find the value equal to or greater than the circuit’s normal operating current. Now look to the far left of that row to find the part number for the RGE device that will best accommodate the circuit. The thermal derating curve located on the next page is a normalized representation of the data in the table below. IHold vs. temperature
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Part number RGE300 RGE400 RGE500 RGE600 RGE700 RGE800 RGE900 RGE1000 RGE1100 RGE1200 RGE1400
Maximum ambient operating temperatures (°C) –40° –20° 0° 20° 25° 4.4 4.0 3.6 3.1 3.0 5.9 5.3 4.8 4.1 4.0 7.3 6.6 6.0 5.2 5.0 8.8 8.0 7.2 6.2 6.0 10.3 9.3 8.4 7.3 7.0 11.7 10.7 9.6 8.3 8.0 13.2 11.9 10.7 9.4 9.0 14.7 13.3 12.0 10.3 10.0 16.1 14.6 13.1 11.5 11.0 17.6 16.0 14.4 12.4 12.0 20.5 18.7 16.8 14.5 14.0
40° 2.6 3.5 4.4 5.2 6.2 6.9 7.9 8.7 9.7 10.4 12.1
50° 2.4 3.2 4.0 4.8 5.6 6.4 7.2 8.0 8.8 9.6 11.2
60° 2.1 2.8 3.6 4.2 5.0 5.6 6.4 7.0 7.8 8.4 9.8
70° 1.9 2.5 3.1 3.8 4.4 5.1 5.6 6.3 6.9 7.6 8.9
85° 1.4 1.9 2.4 2.8 3.3 3.7 4.2 4.7 5.2 5.6 6.5
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RGE Devices
Raychem Circuit Protection Devices
RGE
Thermal derating curve
Radial Leaded
200
Percent of rated hold and trip current
150 100 50 0 –40
–20
0
20
40
60
80
Device’s ambient temperature (°C)
3. Compare maximum operating voltages and maximum
interrupt currents. Look down the first column of the table below to find the part number you selected in Step 1. Look to the right in that row to find the device’s maximum operating voltage (V max.) and maximum interrupt current (I max.). Compare both ratings with the circuit’s to be sure the circuit’s ratings do not exceed those of the RGE device.
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Maximum device voltages and currents*
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Part number RGE300 RGE400 RGE500 RGE600 RGE700 RGE800 RGE900 RGE1000 RGE1100 RGE1200 RGE1400
V max. (volts) 16 16 16 16 16 16 16 16 16 16 16
I max. (amps) 100 100 100 100 100 100 100 100 100 100 100
*Device may withstand higher interrupt current at lower voltages. Each application will need to be individually qualified.
Raychem Circuit Protection Devices
RGE Devices
131
RGE
Radial Leaded
4. Determine time-to-trip.
Time-to-trip is the amount of time it takes for a device to switch to a high-resistance state once a fault current has been applied across the device. Identifying the RGE device’s time-to-trip is important in order to provide the desired protection capabilities. If the device you choose trips too fast, undesired or nuisance tripping will occur. If the device trips too slowly, the components being protected may be damaged before the device switches to a high-resistance state. The chart below shows the typical time-to-trip at 25°C for each PolySwitch RGE device. For example, the chart indicates that the typical time-to-trip for RGE500 at 10 A is 10 seconds. On the chart below, find the typical time-to-trip for the RGE device you selected. If the RGE .