Features:	--
Melting I²t:	51191
Size / Dimension:	2.008" L x 2.362" W x 2.598" H (51.00mm x 60.00mm x 66.00mm)
Package / Case:	--
Mounting Type:	Bolt Mount
Breaking Capacity @ Rated Voltage:	200kA AC, 150kA DC
Operating Temperature:	-55°C ~ 125°C
Approvals:	CCC, CE, cURus, UL
Class:	--
Series:	POWR-SPEED® PSR
Applications:	Semiconductors
Response Time:	Fast
Voltage Rating - DC:	600V
Voltage Rating - AC:	700V
Current Rating:	700A
Fuse Type:	Square
Part Status:	Active

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Electrical, Specialty Fuses

PSR032FL0700Z Application Field and Working Principle

The PSR032FL0700Z is a solid-state, specialty fuse, designed to provide overload and short circuit protection for applications. It is classified as a current limiter and is intended for use in devices that require fast reaction time and high interrupting capacity. It comprises of three integrated parts: a Multilayer varistor, a control circuit and a galvanic isolation device.

Working Principle

When an excessive input current passes through the PSR032FL0700Z fuse, the Multilayer Varistor absorbs the energy and reduces the current. The control circuit then detects the tripped condition, and actuates the galvanic isolation device to open the circuit and clear the fault. The time taken for the PSR032FL0700Z fuse to trip depends on the magnitude of the input current. The device is designed in such a way that at 600A, it has a response time of 40µs, and at 4000A it has a response time of 20µs.

Application Field

The PSR032FL0700Z fuse is designed to provide robust and reliable protection in a wide range of applications. Some of these applications include motor drive systems, motor controller systems, inverters, and power supplies as it has a low temperature coefficient and fast reaction time. Its compact design and cost effectiveness also make it suitable for industrial control panels, portable electronic devices, and lighting systems.

Advantages

The PSR032FL0700Z fuse provides many advantages over traditional fuses. It has a much higher interrupting capacity (up to 4000A), making it suitable for high current applications. The surge handling capability of the device is also significantly higher (up to 80kA/20kW) due to the integration of a Multilayer varistor. Furthermore, the device has a fast reaction time which helps it mitigate risks of fire or other damages. The compact design and low cost make it an economical and efficient choice for various applications. Additionally, the galvanic isolation device provides additional safety by isolating the input and output circuits.

Disadvantages

The PSR032FL0700Z fuse has some drawbacks. The device cannot detect when the input current increases gradually, and it cannot detect a gradual increase in voltage. When exposed to over excitation, the fuse will be damaged, which may lead to downtime and expensive repairs. Furthermore, in some applications, the extremely fast response time may cause fuse blowouts and tripping of fuses at undesired times.

Conclusion

The PSR032FL0700Z is a solid-state, specialty fuse designed for applications which require high interrupting capacity and fast reaction time. It has a compact design, low cost and high surge handling capability. The device can provide protection for motor drive systems, motor controller systems, inverters, power supplies industrial control panels and portable electronic devices. While the PSR032FL0700Z has many advantages, it also has some drawbacks which must be considered before implementation.

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