170M5558 Bussmann - Fuse

170M5558 Description

Rated at 400 A, the Bussmann 170M5558 is a fuse. Its job is to clear faults fast enough to save expensive semiconductors in drives, UPS units and DC supplies.

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Summary of Features

Target Applications

Bussmann 170M5558 is used for protection of power semiconductors (diodes, thyristors and IGBT modules) in rectifiers, AC and DC drives, inverters, UPS systems, soft starters and other power conversion equipment.

Key Specifications

Bussmann 170M5558 is a high speed square body semiconductor fuse, size 2, flush end contact, 400 A, 690 V IEC / 700 V UL, with -GKN/- type K indicator for microswitch. Source: Bussmann Square Body Flush End Contact 690V/700V 40-2000A datasheet (BIF 720019). Values at 25°C unless noted.

Parameter	Value
Rated current	400 A RMS
Rated voltage	690 V IEC / 700 V UL
Body size	2
Contact type	Flush end contact
Indicator	-GKN/- type K indicator for microswitch (microswitch ordered separately)
Pre-arc I²t	11000 A²s
Clearing I²t at 660 V (power factor 15%)	74000 A²s
Watts loss at rated current	65 W
Interrupting rating	200 kA RMS symmetrical (estimated 300 kA)
Main dimensions A / B / D / E	50 / 51 / 77 / 61 mm (see datasheet drawing)
Contact thread	M10

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