The MS32 0R540 inrush current limiting thermistor from Ametherm offers a maximum steady state current of 40A (up to +65°C), resistance of 0.5Ω ±25% (at 25°C) and a maximum recommended energy rating of 250J. Ametherm’s MegaSurge™ series of inrush current limiting NTC thermistors reduce costs and greatly simplify designs. These specifications are the highest of any single-solution inrush current limiting device on the market.
- Inrush current limiting thermistor
- Resistance of 0.5Ω ±25% (at 25°C)
- Maximum steady state current of 40A (up to +65°C)
- Maximum recommended energy of 250J
- Voltage ratings of 120VAC, 240VAC, 440VAC and 680VAC
- Actual energy failure at 400J
- 0.01Ω at 100% maximum current and 0.01Ω at 50% maximum current
- Body temperature of +244°C at maximum current
- Material type A (for beta and curve)
- Dissipation constant of 79.8mW/°C
- Thermal time constant of 194mW/s
Typical applications for the MS32 series include:
- Inrush current protection of power supplies
- Motor controllers, Audio amplifiers, Battery chargers and Frequency generators,
- Plasma cutting tools, MRI machines and Toroidal transformers
The below table gives the full specifications of the Ametherm MS32 0R540 series: