170M6566 Bussmann - Fuse

170M6566 Description

Bussmann makes the 170M6566, a 1250 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 170M6566 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 170M6566 is a high speed square body semiconductor fuse, size 3, flush end contact, 1250 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	1250 A RMS
Rated voltage	690 V IEC / 700 V UL
Body size	3
Contact type	Flush end contact
Indicator	-GKN/- type K indicator for microswitch (microswitch ordered separately)
Pre-arc I²t	290000 A²s
Clearing I²t at 660 V (power factor 15%)	1950000 A²s
Watts loss at rated current	140 W
Interrupting rating	200 kA RMS symmetrical (estimated 300 kA)
Main dimensions A / B / D / E	51 / 53 / 92 / 76 mm (see datasheet drawing)
Contact thread	M12

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