B57213P0709M301

Series:	P13
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
R @ 25°C:	7 Ohms
Tolerance:	±20%
Current - Steady State Max:	5A
R @ Current:	122 mOhms
Diameter:	0.57" (14.5mm)
Lead Spacing:	0.295" (7.50mm)
Approvals:	CQC, UL, VDE

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Inrush Current Limiters (ICL) are an important component in the electronics industry, one of the primary products of which is the B57213P0709M301. Inrush current limiters are a type of electrical component used to limit the surge of current when an electronic device is first powered on. When large currents are put in a circuit, the components can easily become overloaded and fail. The purpose of an inrush current limiter is to regulate the current, ensuring that the circuit is not damaged when the circuit is initially powered up.The B57213P0709M301 inrush current limiter is an upgraded version of the conventional type, which is designed to work for higher temperature applications. It features a die-cast aluminum shell with an integrated cooling fan for increased thermal management. It operates with a voltage range of up to 370VAC and a continuous current rating of 32A.The most important feature of the B57213P0709M301, however, is its ability to limit the inrush current. This is accomplished through the use of a motor-rated thermistor, a special type of resistor that is designed to responds rapidly to changes in temperature. The thermistor is placed in the circuit such that it reduces current when first powered on due to a temperature-dependent reduction in resistance. This reduction in current protects the device from damage during the inrush of current.The working principle of the B57213P0709M301 is based on the NTC (Negative Temperature Coefficient) thermistor and the series resistance. The thermistor is connected in series with the load and a resistor connected in parallel with the thermistor. The resistance of the thermistor is temperature-dependent and reduces when the temperature rises. When the device is powered on, the thermistor limits the inrush current by quickly reducing its resistance, resulting in the required current-limiting effect.The B57213P0709M301 is ideal for motor overload and surge protection, and is suitable for a variety of industrial, commercial, and residential applications. It can also be used in audio and video equipment, inverters, UPS systems, and various other devices that require protection against peak currents and start-up surges. The B57213P0709M301 can also be used as a replacement to conventional types of fuses for higher temperature and current requirements.The B57213P0709M301 is a reliable and effective inrush current limiter, providing the required current-limiting effect while maintaining efficiency and safety. It operates within a temperature range of -25°C to +85°C and offers superior circuit protection from over-current, overload, and short-circuit conditions. The motor-rated thermistor also offers protection from inrush current, ensuring that the circuit is not overloaded and does not suffer from any damage when first powered on.

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