170M4409 Bussmann - Fuse

170M4409 Description

Bussmann 170M4409 is a fuse rated at 250 A. Fast-acting fuses like this are used to protect rectifiers, inverters and other power-electronic circuits against short circuits.

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Summary of Features

Target Applications

Bussmann 170M4409 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 170M4409 is a high speed square body semiconductor fuse, size 1, flush end contact, 250 A, 690 V IEC / 700 V UL, with -B/- visual indicator. Source: Bussmann Square Body Flush End Contact 690V/700V 40-2000A datasheet (BIF 720019). Values at 25°C unless noted.

Parameter	Value
Rated current	250 A RMS
Rated voltage	690 V IEC / 700 V UL
Body size	1
Contact type	Flush end contact
Indicator	-B/- visual indicator
Pre-arc I²t	3100 A²s
Clearing I²t at 660 V (power factor 15%)	21000 A²s
Watts loss at rated current	55 W
Interrupting rating	200 kA RMS symmetrical (estimated 300 kA)
Main dimensions A / B / D / E	50 / 51 / 69 / 53 mm (see datasheet drawing)
Contact thread	M8

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