RXEF375-2

Resistance - Initial (Ri) (Min):	30 mOhms
Approvals:	CQC, CSA, TUV, UL
Lead Spacing:	0.400" (10.15mm)
Thickness (Max):	--
Height - Seated (Max):	1.252" (31.80mm)
Size / Dimension:	1.071" Dia x 0.118" W (27.20mm x 3.00mm)
Package / Case:	Radial, Disc
Mounting Type:	Through Hole
Ratings:	--
Operating Temperature:	-40°C ~ 85°C
Resistance - Post Trip (R1) (Max):	80 mOhms
Series:	PolySwitch®, RXEF
Time to Trip:	24s
Current - Trip (It):	7.5A
Current - Hold (Ih) (Max):	3.75A
Current - Max:	40A
Voltage - Max:	72V
Type:	Polymeric
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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PTC Resettable Fuses are one of the most advanced and highly reliable forms of over-current protection available. They offer a reliable, economical solution to protect against electrical overloads in a wide variety of applications.The RXEF375-2 is a PTC Resettable Fuse specifically designed for high-voltage applications such as domestic appliances, industry equipment, electric motors, and other power-supply systems. It is used to protect against short circuits and other high-voltage overloads.The RXEF375-2 is a high current, low voltage resettable fuse, with a rated voltage of 250V and a rated current of 375A. It is constructed with a special low voltage PTC (Positive Temperature Coefficient) element, which acts as the fuse element. The PTC element offers a fast response time and low thermal resistance, making it suitable for high-current applications. The RXEF375-2 also features a self-resetting function, allowing it to automatically reset after an over-current event.The working principle of the RXEF375-2 is based on the electrical characteristics of the PTC element. When an over-current event occurs, the heat generated by the PTC element causes it to expand rapidly. This expansion causes an increase in contact resistance, which reduces the current flow through the circuit. The current reduction triggers a resetting function, which then revert the PTC element back to its original form. The RXEF375-2 will then continue to protect against further over-current events.The RXEF375-2 is widely used in a variety of applications such as home appliances, electric motors, and various types of industrial equipment. It can be used to provide both primary and secondary over-current protection. In primary protection applications, the RXEF375-2 is used in series with a main circuit breaker. The circuit breaker will trip first, then the RXEF375-2 will trip if the primary protection fails. In secondary protection applications, the RXEF375-2 is used in parallel with other over-current protection devices, such as fuses or circuit breakers, to protect against secondary overloads.The RXEF375-2 is an effective and reliable device that can provide a cost-effective protection solution for a wide range of applications. It is easy to install and maintain, and provides a flexible and efficient solution for over-current protection.

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