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Eaton ICL680D25 6.8 Ohm 25 mm NTC Inrush Current Limiter
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pEaton ICL680D25 — NTC inrush current limiter, 6.8 Ω at 25 °C, 10 A steady./p
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Eaton ICL680D25 6.8 Ohm 25 mm NTC Inrush Current Limiter
The ICL680D25 from Eaton holds 6.8 ohm at 25 °C, passes up to 10 A steady, on a 25 mm disk.
Technical Data
| Parameter | Rating |
|---|---|
| Parameter | Value |
| Orderable part number | ICL680D25BIM (5.0 mm pitch) / ICL680D25CIM (7.5 mm pitch) |
| Zero-power resistance R25 | 6.8 Ohm at +25 C |
| Tolerance | M = plus/minus 20 % |
| Max steady current | 10 A |
| Beta (25/50) | 3150 K |
| Max capacitance at 240 Vac | 2,500 uF |
| Dissipation factor | 40 mW/C |
| Thermal time constant | 125 s |
| Body | D25 disk, epoxy sealed radial |
| Operating temperature | -40 C to +200 C |
| Environmental | Halogen free, Pb-free |
Practical Notes
- Limits capacitor and transformer inrush by dropping resistance as it heats.
- It does not interrupt a fault — pair it with a fuse or breaker upstream.
- Leave cooling time between power cycles so the disk returns to high resistance.
- Resistance at 25 °C sets the cold-start limiting; the hot value is far lower.
- A disk rated for a higher steady current runs cooler at the same load.
- Beta value 3150 K describes how sharply resistance falls with temperature.
- Continuous current must stay at or below 10 A or the disk self-heats.
Application Scenarios
Common installation contexts include:
- EV
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