170M6721 Bussmann - Fuse

170M6721 Description

170M6721 is a 550 V, 2000 A fuse made by Bussmann. Its job is to clear faults fast enough to save expensive semiconductors in drives, UPS units and DC supplies.

USComponent has been supplying power semiconductors since 2001, including discontinued and hard-to-find part numbers. Send us an RFQ for the 170M6721 and we will reply with price, condition and lead time. Please check the manufacturer's datasheet to confirm ratings, package and pin-out before you order.

Summary of Features

Target Applications

Bussmann 170M6721 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 170M6721 is a high speed square body semiconductor fuse, US style (bolted tags), size 3, 2000 A, 550 V IEC (UL / CSA status: consult Bussmann), -FU/115 without indicator (115 mm version). Source: Bussmann Square Body US Style 690V/700V 40-2000A datasheet (BIF 720023). Values at 25°C unless noted.

Parameter	Value
Rated current	2000 A RMS
Rated voltage	550 V IEC (UL / CSA status: consult Bussmann)
Body size	3
Style	US style (bolted tags)
Indicator	-FU/115 without indicator (115 mm version)
Pre-arc I²t	1150000 A²s
Clearing I²t at 660 V (power factor 15%)	6350000 A²s
Watts loss at rated current	175 W
Interrupting rating	200 kA RMS symmetrical (estimated 300 kA)
Overall length (B)	155 mm
Mounting centres (C1 / C2)	125 / 97 mm
Body A x D x E	51 x 92 x 76 mm

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