We’re Exhibiting at Space Tech Europe 2025

Space Tech Expo Europe, 18-20th November 2025, Bremen, Germany, Stand G56

Inrush Current Limiting Thermistors

  • Ametherm

Ametherm SL12 15102

  • Inrush current limiting thermistor
  • Resistance of 150Ω (at 25°C)
  • Maximum steady state current of 2A
  • Maximum recommended energy of 10J
  • Body temperature of +137°C at maximum current
  • Maximum disc diameter 12mm
  • Exempt
  • Ametherm

Ametherm SL12 17004

  • Inrush current limiting thermistor
  • Resistance of 17.5Ω (at 25°C)
  • Maximum steady state current of 4A
  • Maximum recommended energy of 30J
  • Body temperature of +152°C at maximum current
  • Maximum disc diameter 11.5mm
  • Exempt
  • Ametherm

Ametherm SL12 1R010

  • Inrush current limiting thermistor
  • Resistance of 1Ω (at 20°C)
  • Maximum steady state current of 10A
  • Maximum recommended energy of 28J
  • Voltage ratings of 120VAC and 240VAC
  • Body temperature of +182°C at maximum current
  • Exempt
  • Ametherm

Ametherm SL12 1R308

  • Inrush current limiting thermistor
  • Resistance of 1.3Ω (at 20°C)
  • Maximum steady state current of 8A
  • Maximum recommended energy of 40J
  • Voltage ratings of 120VAC and 240VAC
  • Body temperature of +150°C at maximum current
  • Exempt
  • Ametherm

Ametherm SL12 20003

  • Inrush current limiting thermistor
  • Resistance of 20Ω (at 25°C)
  • Maximum steady state current of 3A
  • Maximum recommended energy of 35J
  • Voltage ratings of 120VAC and 240VAC
  • Body temperature of +139°C at maximum current
  • Exempt
  • Ametherm

Ametherm SL12 22101

  • Inrush current limiting thermistor
  • Resistance of 220Ω (at 25°C)
  • Maximum steady state current of 1A
  • Maximum recommended energy of 30J
  • Actual energy failure at 65J
  • Maximum disc diameter 12mm
  • Exempt
  • Ametherm

Ametherm SL12 25002

  • Inrush current limiting thermistor
  • Resistance of 25Ω (at 25°C)
  • Maximum steady state current of 2A
  • Maximum recommended energy of 30J
  • Voltage ratings of 120VAC and 240VAC
  • Body temperature of +142°C at maximum current
  • Exempt
  • Ametherm

Ametherm SL12 25003

  • Inrush current limiting thermistor
  • Resistance of 25Ω (at 25°C)
  • Maximum steady state current of 3A
  • Maximum recommended energy of 45J
  • Body temperature of +142°C at maximum current
  • Maximum disc diameter 12mm
  • Exempt
  • Ametherm

Ametherm SL12 2R505

  • Inrush current limiting thermistor
  • Resistance of 2.5Ω (at 20°C)
  • Maximum steady state current of 5A
  • Maximum recommended energy of 36J
  • Voltage ratings of 120VAC and 240VAC
  • Body temperature of +146°C at maximum current
  • Exempt
  • Ametherm

Ametherm SL12 40002

  • Inrush current limiting thermistor
  • Resistance of 40Ω (at 25°C)
  • Maximum steady state current of 2A
  • Maximum recommended energy of 20J
  • Body temperature of +148°C at maximum current
  • Maximum disc diameter 12mm
  • Exempt
  • Ametherm

Ametherm SL12 50002

  • Inrush current limiting thermistor
  • Resistance of 50Ω ±20% (at 25°C)
  • Maximum steady state current of 2A
  • Maximum recommended energy of 20J
  • Body temperature of +142°C at maximum current
  • Maximum disc diameter 13mm
  • Exempt
  • Ametherm

Ametherm SL12 5R002

  • Inrush current limiting thermistor
  • Resistance of 5Ω (at 20°C)
  • Maximum steady state current of 2A
  • Maximum recommended energy of 25J
  • Voltage ratings of 120VAC and 240VAC
  • Body temperature of +152°C at maximum current
  • Exempt
  • Ametherm

Ametherm SL12 5R004

  • Inrush current limiting thermistor
  • Resistance of 5Ω (at 20°C)
  • Maximum steady state current of 4A
  • Maximum recommended energy of 40J
  • Actual energy failure at 80J
  • Maximum disc diameter 12mm
  • Exempt
  • Ametherm

Ametherm SL12 80002

  • Inrush current limiting thermistor
  • Resistance of 80Ω (at 25°C)
  • Maximum steady state current of 2A
  • Maximum recommended energy of 30J
  • Voltage ratings of 120VAC and 240VAC
  • Body temperature of +142°C at maximum current
  • Exempt
  • Ametherm

Ametherm SL12 8R003

  • Inrush current limiting thermistor
  • Resistance of 8Ω (at 20°C)
  • Maximum steady state current of 3A
  • Maximum recommended energy of 25J
  • Body temperature of +129°C at maximum current
  • Maximum disc diameter 12mm
  • Exempt
  • Ametherm

Ametherm SL12 8R004

  • Inrush current limiting thermistor
  • Resistance of 8Ω ±20% (at 20°C)
  • Maximum steady state current of 2A
  • Maximum recommended energy of 25J
  • Voltage ratings of 120VAC and 240VAC
  • Body temperature of +152°C at maximum current
  • Exempt

Ametherm SL12 15102

  • Inrush current limiting thermistor
  • Resistance of 150Ω (at 25°C)
  • Maximum steady state current of 2A
  • Maximum recommended energy of 10J
  • Body temperature of +137°C at maximum current
  • Maximum disc diameter 12mm

Ametherm SL12 17004

  • Inrush current limiting thermistor
  • Resistance of 17.5Ω (at 25°C)
  • Maximum steady state current of 4A
  • Maximum recommended energy of 30J
  • Body temperature of +152°C at maximum current
  • Maximum disc diameter 11.5mm

Ametherm SL12 1R010

  • Inrush current limiting thermistor
  • Resistance of 1Ω (at 20°C)
  • Maximum steady state current of 10A
  • Maximum recommended energy of 28J
  • Voltage ratings of 120VAC and 240VAC
  • Body temperature of +182°C at maximum current

Ametherm SL12 1R308

  • Inrush current limiting thermistor
  • Resistance of 1.3Ω (at 20°C)
  • Maximum steady state current of 8A
  • Maximum recommended energy of 40J
  • Voltage ratings of 120VAC and 240VAC
  • Body temperature of +150°C at maximum current

Ametherm SL12 20003

  • Inrush current limiting thermistor
  • Resistance of 20Ω (at 25°C)
  • Maximum steady state current of 3A
  • Maximum recommended energy of 35J
  • Voltage ratings of 120VAC and 240VAC
  • Body temperature of +139°C at maximum current

Ametherm SL12 22101

  • Inrush current limiting thermistor
  • Resistance of 220Ω (at 25°C)
  • Maximum steady state current of 1A
  • Maximum recommended energy of 30J
  • Actual energy failure at 65J
  • Maximum disc diameter 12mm

Ametherm SL12 25002

  • Inrush current limiting thermistor
  • Resistance of 25Ω (at 25°C)
  • Maximum steady state current of 2A
  • Maximum recommended energy of 30J
  • Voltage ratings of 120VAC and 240VAC
  • Body temperature of +142°C at maximum current

Ametherm SL12 25003

  • Inrush current limiting thermistor
  • Resistance of 25Ω (at 25°C)
  • Maximum steady state current of 3A
  • Maximum recommended energy of 45J
  • Body temperature of +142°C at maximum current
  • Maximum disc diameter 12mm

Ametherm SL12 2R505

  • Inrush current limiting thermistor
  • Resistance of 2.5Ω (at 20°C)
  • Maximum steady state current of 5A
  • Maximum recommended energy of 36J
  • Voltage ratings of 120VAC and 240VAC
  • Body temperature of +146°C at maximum current

Ametherm SL12 40002

  • Inrush current limiting thermistor
  • Resistance of 40Ω (at 25°C)
  • Maximum steady state current of 2A
  • Maximum recommended energy of 20J
  • Body temperature of +148°C at maximum current
  • Maximum disc diameter 12mm

Ametherm SL12 50002

  • Inrush current limiting thermistor
  • Resistance of 50Ω ±20% (at 25°C)
  • Maximum steady state current of 2A
  • Maximum recommended energy of 20J
  • Body temperature of +142°C at maximum current
  • Maximum disc diameter 13mm

Ametherm SL12 5R002

  • Inrush current limiting thermistor
  • Resistance of 5Ω (at 20°C)
  • Maximum steady state current of 2A
  • Maximum recommended energy of 25J
  • Voltage ratings of 120VAC and 240VAC
  • Body temperature of +152°C at maximum current

Ametherm SL12 5R004

  • Inrush current limiting thermistor
  • Resistance of 5Ω (at 20°C)
  • Maximum steady state current of 4A
  • Maximum recommended energy of 40J
  • Actual energy failure at 80J
  • Maximum disc diameter 12mm

Ametherm SL12 80002

  • Inrush current limiting thermistor
  • Resistance of 80Ω (at 25°C)
  • Maximum steady state current of 2A
  • Maximum recommended energy of 30J
  • Voltage ratings of 120VAC and 240VAC
  • Body temperature of +142°C at maximum current

Ametherm SL12 8R003

  • Inrush current limiting thermistor
  • Resistance of 8Ω (at 20°C)
  • Maximum steady state current of 3A
  • Maximum recommended energy of 25J
  • Body temperature of +129°C at maximum current
  • Maximum disc diameter 12mm

Ametherm SL12 8R004

  • Inrush current limiting thermistor
  • Resistance of 8Ω ±20% (at 20°C)
  • Maximum steady state current of 2A
  • Maximum recommended energy of 25J
  • Voltage ratings of 120VAC and 240VAC
  • Body temperature of +152°C at maximum current

Manufacturers

Looking for Inrush Current Limiting Thermistors?

The below manufacturers are all of our authorised partners that produce Inrush Current Limiting Thermistors or related products.

Inrush Current Limiting Thermistors

Inrush current limiting thermistors are used for protecting the circuit against occasional current spikes significantly higher than normal operating current, which could otherwise damage the equipment. At Rhopoint Components we offer a range of current limiting resistors from industry-leading manufacturer Ametherm, with various sizes, resistance and maximum steady-state current options available. The Ametherm thermistors compare favourably with traditional inrush current limiters, offering lower current density, faster reset time, wider temperature range and virtually no derating.