Inrush Current Limiting Thermistors

Ametherm MS32 0R540

  • Inrush current limiting thermistor
  • Resistance of 0.5Ω ±25% (at 25°C)
  • Maximum steady state current of 40A
  • Maximum recommended energy of 250J
  • Voltage rating from 120VAC to 680VAC
  • Body temperature of +244°C at maximum current
  • Ametherm
  • Exempt

Specifications

Weight 0.00000 kg
Dimensions 38.80 x 7.00 x 31.00mm
Actual Energy Failure

400J

Dissipation Constant

79.8mW/°C

Material Type

Maximum Steady State Current

40A

Mounting / Size

Resistance at +25°C

0.5Ω

Series / Model

,

Thermal Time Constant

194mW/s

Tolerance

Voltage Rating

-

Inrush Current Limiting Thermistors

Ametherm MS32 0R540

  • Inrush current limiting thermistor
  • Resistance of 0.5Ω ±25% (at 25°C)
  • Maximum steady state current of 40A
  • Maximum recommended energy of 250J
  • Voltage rating from 120VAC to 680VAC
  • Body temperature of +244°C at maximum current
  • Ametherm
  • Exempt

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Working alongside your design team from the earliest stage, we help you select the right part for the application and, where a standard part will not do, develop customised components with our manufacturing partners such as lead length, termination and package size.

Related Ametherm MS32 0R540 Components

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:

Ametherm MS32 0R540 Specifications

Inrush Current Limiting Thermistors

Ametherm MS32 0R540