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Eaton ICL501D15 50 Ohm 15 mm NTC Inrush Current Limiter
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pEaton ICL501D15 — NTC inrush current limiter, 50 Ω at 25 °C, 2.5 A steady./p
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Eaton ICL501D15 50 Ohm 15 mm NTC Inrush Current Limiter
Eaton ICL501D15 50 Ohm 15 mm NTC Inrush Current Limiter belongs to the Eaton range. It holds 50 ohm at 25 °C, passes up to 2.5 A steady, on a 15 mm disk.
Technical Data
| Parameter | Rating |
|---|---|
| Parameter | Value |
| Orderable part number | ICL501D15BIM (5.0 mm pitch) / ICL501D15CIM (7.5 mm pitch) |
| Zero-power resistance R25 | 50 Ohm at +25 C |
| Tolerance | M = plus/minus 20 % |
| Max steady current | 2.5 A |
| Beta (25/50) | 3400 K |
| Max capacitance at 240 Vac | 500 uF |
| Dissipation factor | 17 mW/C |
| Thermal time constant | 80 s |
| Body | D15 disk, epoxy sealed radial |
| Operating temperature | -40 C to +200 C |
| Environmental | Halogen free, Pb-free |
Design 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 3400 K describes how sharply resistance falls with temperature.
- Continuous current must stay at or below 2.5 A or the disk self-heats.
Where It Is Used
Typical places this thermistor turns up:
- EV
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