Inrush Current Limiting Thermistors

Ametherm MS22 22103

  • Inrush current limiting thermistor
  • Resistance of 220Ω (at 25°C)
  • Maximum steady state current of 3.5A
  • Maximum recommended energy of 75J
  • Voltage rating from 120VAC to 680VAC
  • Actual energy failure at 175J
  • 1.4Ω at 100% maximum current and 2.75Ω at 50% maximum current
  • Body temperature of +144°C at maximum current
  • Ametherm
  • Exempt

Specifications

Weight 0.00000 kg
Dimensions 32.20 x 10.00 x 23.00mm
Actual Energy Failure

175J

Dissipation Constant

45.4mW/°C

Material Type

Maximum Steady State Current

3.5A

Mounting / Size

Resistance at +25°C

220Ω

Series / Model

,

Thermal Time Constant

114mW/s

Tolerance

Voltage Rating

-

Inrush Current Limiting Thermistors

Ametherm MS22 22103

  • Inrush current limiting thermistor
  • Resistance of 220Ω (at 25°C)
  • Maximum steady state current of 3.5A
  • Maximum recommended energy of 75J
  • Voltage rating from 120VAC to 680VAC
  • Actual energy failure at 175J
  • 1.4Ω at 100% maximum current and 2.75Ω at 50% maximum current
  • Body temperature of +144°C at maximum current
  • Ametherm
  • Exempt

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Related Ametherm MS22 22103 Components

The MS22 22103 inrush current limiting thermistor from Ametherm offers a maximum steady state current of 3.5A (up to +25°C), resistance of 220Ω ±25% (at 25°C) and a maximum recommended energy rating of 75J. Ametherm’s MegaSurge™ series of inrush current limiting NTC thermistors reduce costs and greatly simplify designs. In addition, they increase safety by eliminating the fire hazard associated with failed relays. While traditional thermistors are only certified for input voltages from 85 VAC to 265 VAC, UL recognised MegaSurge™ devices are certified for single and three phase input voltages up to 480 VAC. These specifications are the highest of any single-solution inrush current limiting device on the market.

  • Inrush current limiting thermistor
  • Resistance of 220Ω (at 25°C)
  • Maximum steady state current of 3.5A (up to +25°C)
  • Maximum recommended energy of 75J
  • Voltage ratings of 120VAC, 240VAC, 440VAC and 680VAC
  • Actual energy failure at 175J
  • 1.4Ω at 100% maximum current and 2.75Ω at 50% maximum current
  • Body temperature of +144°C at maximum current
  • Material type L (for beta and curve)
  • Tolerance ±25%
  • Dissipation constant of 45.4mW/°C
  • Thermal time constant of 114mW/s
  • Recognised by Underwriters Laboratories (UL) for ensured safety

 

Typical applications for the MS22 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 MS22 22103 series:

Ametherm MS22 22103 Specifications

Inrush Current Limiting Thermistors

Ametherm MS22 22103