Ametherm provides high quality inrush current limiting solutions to protect components from damaging levels of inrush current at startup. Ametherm's commitment to innovative design, quality manufacturing, and exceptional customer support ensures the best solution for inrush current limiting applications.
Ametherm NTC Disc Thermistors are thermally sensitive semiconductor resistors which decrease in resistance as absolute temperature increases. Resistance values range from 1.0Ω to 500KΩ. The series is suited to a wide range of resistance values and temperature coefficients. Typical applications for the NTC Disc Thermistors from Ametherm include temperature compensation, temperature measurement, fan motor control, and temperature sensors.
Ametherm SURGE-GARD™ Inrush Current Limiting devices are manufactured using specially formulated metal oxide ceramic materials. SURGE-GARD devices are capable of suppressing high inrush current surges. These Ametherm inrush current limiters are especially useful in power supplies where the low impedance of the charging capacitor exposes the diode bridge rectifier to an excessively high current surge at turn-on.
Ametherm BigAMP Inrush Current Limiters absorbs high amounts of inrush current when electrical equipment is turned on by offering a high resistance to current and quickly decreasing in resistance once steady state current begins to flow through the thermistor. The bigAMP Inrush Current Limiters are specially designed thermistors able to withstand up to 36 amperes of continuous current and 260 joules of input energy. Applications include switching power supplies, AC motors, uninterruptible power supplies, and frequency generators.
Ametherm miniAMP Series Inrush Current Limiters are designed for
applications where board space is limited and cool operation is desired. The miniAMP series is rated for 250mA to 3A continuous current and up to 20 joules of input energy, available in 3, 5, and 8mm diameters and weigh as little as .06 grams. The miniAMP Series is a cost effective and efficient way to protect components such as relays, diodes, and fuses from inrush current.
Ametherm MegaSurge™ Inrush Current Limiters are the economical and space saving solution to limit high inrush current. MegaSurge’s rugged design and high temperature construction allows safe operation at high continuous currents. The Megasure Inrush Current Limiters are able to withstand up to 50 amperes of steady state current and 75 to 900 joules of input energy. Applications include plasma cutting tools, motor drives, MRI machines, audio amplifiers, toroidal transformers, and battery chargers.
Ametherm AS Series Inrush Current Limiters offers thermistor
protection for precharge circuit on lithium Ion batteries. With a lower
current density and faster reset time there is no hot spots from
fatigue, because of lower current density and uniform temperature
gradient throughout the disc. The Ametherm AS Series provides inrush
current protection for 250 to 1,000 joules of input energy and allows
between 10 to 18 watts in the 10 to 50A SSI range, and up to 900 joules
of energy. Ametherm Inrush Current Limiters are designed to protect your
components from damaging levels of inrush current at startup.