A70QS500-4K Ferraz - Fuses

A70QS500-4K Description

A70QS500-4K is a 700 V / 500 A Amp-trap semiconductor protection fuse from Ferraz Shawmut (Mersen). Typical applications: protection of 700 V or less motor drives, UPS and inverters.

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Summary of Features

Target Applications

Ferraz A70QS500-4K is used for Protection of 700 V or less motor drives, UPS and inverters.

Key Specifications

A70QS500-4K is a 700 V / 500 A Amp-trap semiconductor protection fuse from Ferraz Shawmut (Mersen). Source: manufacturer datasheet.

Parameter	Value
Manufacturer	Ferraz Shawmut (Mersen)
Series	A70QS Amp-trap Form 101
Rated voltage	700 V AC / 700 V DC
Rated current	500 A
Interrupting rating	200 kA (700 V AC); 100 kA (700 V DC, L/R = 10 ms)
Mounting type	4K (bolt-in blades, longer body)
Overall length (A)	180 mm (7.09 in)
I²t melting	47.1 x 10³ A²s
I²t clearing at 700 V AC	160 x 10³ A²s (1 fuse)
I²t clearing at 700 V DC	150 x 10³ A²s
Watts loss at rated current	92 W
Approvals	UL Recognized (JFHR2), CSA certified (LR 12636)
Datasheet	Available on this page (PDF)

Note: data taken from the Ferraz Shawmut (Mersen) datasheet of A70QS series (35-800 A), which covers A70QS500-4K.

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