170M4469 Bussmann - Fuse

170M4469 Description

Bussmann makes the 170M4469, a 550 V, 900 A fuse. 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 170M4469 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 170M4469 is a high speed square body semiconductor fuse, size 1, flush end contact, 900 A, 550 V IEC (UL / CSA status: consult Bussmann), with -BKN/- 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	900 A RMS
Rated voltage	550 V IEC (UL / CSA status: consult Bussmann)
Body size	1
Contact type	Flush end contact
Indicator	-BKN/- type K indicator for microswitch (microswitch ordered separately)
Pre-arc I²t	155000 A²s
Clearing I²t at 660 V (power factor 15%)	850000 A²s
Watts loss at rated current	100 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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