170M4459 Bussmann - Fuse

170M4459 Description

The 170M4459 from Bussmann is a fuse with a 250 A rating. It protects power semiconductors such as diodes, thyristors and IGBTs from short-circuit damage in drives, rectifiers and UPS systems.

Request a quote for the 170M4459 and our team will get back to you with price, quantity available and lead time. We ship worldwide. As with any power device, please check the manufacturer's datasheet to confirm it matches your design.

Summary of Features

Target Applications

Bussmann 170M4459 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 170M4459 is a high speed square body semiconductor fuse, size 1, flush end contact, 250 A, 690 V IEC / 700 V UL, 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	250 A RMS
Rated voltage	690 V IEC / 700 V UL
Body size	1
Contact type	Flush end contact
Indicator	-BKN/- type K indicator for microswitch (microswitch ordered separately)
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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