Ametherm AS32 2R025

Product Features

  • Inrush current limiting thermistor
  • Resistance of 2Ω (at 25°C)
  • Maximum steady state current of 25A
  • Maximum recommended energy of 300J
  • Body temperature of +220°C at maximum current
  • Maximum disc diameter 30mm
  • Exempt

The AS32 2R025 inrush current limiting thermistor from Ametherm offers a maximum steady state current of 25A (up to +25°C) and a resistance of 2Ω ±25% (at 25°C). The Ametherm AS series are designed to withstand high steady-state current and input energy. Compared to traditional inrush current limiters, the devices offer lower current density, faster reset times, and a wider temperature range without derating. This lower current density, in combination with a uniform temperature gradient throughout the disc, increases reliability by eliminating hot spots from fatigue. The AS series from Ametherm are suitable for high energy and short term high current applications.

  • Inrush current limiting thermistor
  • Resistance of 2Ω (at 25°C)
  • Maximum steady state current of 25A (up to +25°C)
  • Maximum recommended energy of 300J
  • Actual energy failure at 600J
  • 0.02Ω at 100% maximum current and 0.04Ω at 50% maximum current
  • Body temperature of +220°C at maximum current
  • Material type B (for beta and curve)
  • Tolerance ±25%
  • Dissipation constant of 78.2mW/°C
  • Thermal time constant of 0mW/s
  • Recognised by Underwriters Laboratories (UL) for ensured safety

 

Typical applications for the AS series include:

  • Protection of pre-charge circuits in lithium ion batteries
  • Variable-frequency drives in sports equipment like treadmills, high-speed computers and processors
  • Switch mode power supplies for plasma cutters, welders, audio amplifiers, MRIs and x-ray machines

The below table gives the full specifications of the Ametherm AS32 2R025 series:

Ametherm AS32 2R025 Specifications

Specifications

Weight 0.00000 kg
Dimensions 37.00 x 7.80 x 30.00mm
Actual Energy Failure

600J

Dissipation Constant

78.2mW/°C

Material Type

Maximum Steady State Current

25A

Package / Size

Resistance at +25°C

Series / Model

,

Thermal Time Constant

0mW/s

Tolerance

  • Ametherm

Ametherm AS32 2R025

Quantity