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Inrush Current Limiter Calculator
When designing a circuit that uses an inrush current limiter, one of the most important parameters is the energy rating of the circuit. Once the energy rating of the circuit has been determined, a suitable inrush current limiter can be selected. This calculator helps to determine this energy rating.
Enter voltage and capacitance below in order to calculate energy. This will be populated automatically.
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The below table lists some of the inrush current limiter series available through us by Ametherm, along with their specifications:
| Ametherm SL Series | ||||
|---|---|---|---|---|
| Series | Maximum Steady State Current | Resistance at +25°C | Maximum Capacitance at 120VAC | Maximum Recommended Energy |
| SL03 | 1A to 2A | 10Ω to 220Ω | 100μF | 2J |
| SL05 | 0.25A to 3A | 4Ω to 120Ω | 200μF to 340μF | 3J to 12J |
| SL08 | 1.1A to 3A | 4Ω to 120Ω | 550μF to 697μF | 8J to 12J |
| SL10 | 1A to 5A | 10Ω to 30Ω | 700μF to 2000μF | 2J to 120J |
| SL12 | 1A to 10A | 1Ω to 220Ω | 1389μF to 2778μF | 10J to 60J |
| SL15 | 2A to 10A | 1Ω to 220Ω | 2778μF to 4167μF | 35J to 55J |
| SL18 | 3A to 12A | 0.7Ω to 47Ω | 4500μF to 8335μF | 65J to 120J |
| SL22 | 1A to 16A | 0.5Ω to 220Ω | 3473μF to 10000μF | 2J to 160J |
| SL32 | 15A to 36A | 0.25Ω to 10Ω | 6946μF to 20839μF | 100J to 300J |
| Ametherm MS Series | ||||
|---|---|---|---|---|
| Series | Maximum Steady State Current | Resistance at +25°C | Maximum Capacitance at 120VAC | Maximum Recommended Energy |
| MS12 | 2A to 2A | 150Ω to 150Ω | 7500μF to 7500μF | 110J to 110J |
| MS15 | 4.2A to 4.2A | 30Ω to 40Ω | 9300μF to 9300μF | 135J to 135J |
| MS22 | 2A to 8A | 0.5Ω to 220Ω | 5100μF to 16400μF | 75J to 240J |
| MS32 | 6A to 40A | 0.5Ω to 50Ω | 13500μF to 20700μF | 250J to 300J |
| MS35 | 10A to 50A | 0.5Ω to 20Ω | 34000μF to 62000μF | 500J to 800J |
| Ametherm AS Series | ||||
|---|---|---|---|---|
| Series | Maximum Steady State Current | Resistance at +25°C | Maximum Capacitance at 120VAC | Maximum Recommended Energy |
| AS32 | 6A to 36A | 0.5Ω to 50Ω | 17500µF to 20700µF | 250J to 300J |
| AS35 | 10A to 50A | 0.5Ω to 20Ω | – | 500J to 800J |
