170M3458Bussmann - Fuse
170M3458 Description
The Bussmann 170M3458 is a fuse rated at 700 V and 40 A. Typical applications for this type of device include overcurrent protection of power semiconductors and power-electronic circuits.
USComponent supplies power semiconductors and industrial electronic components to engineers, OEMs and maintenance teams worldwide, including legacy and hard-to-find part numbers. Please confirm ratings, package and pin-out against the manufacturer's datasheet before ordering, and request a quote for current pricing and lead time on the 170M3458.
Summary of Features
Target Applications
Bussmann 170M3458 is used for DC common bus, DC drives, Power converters/rectifiers and Reduced voltage starters.
Key Specifications
Bussmann 170M3458 is a high speed square body semiconductor fuse, size 1*, flush end contact, 40 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 | 40 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 | 40 A²s |
| Clearing I²t at 660 V (power factor 15%) | 270 A²s |
| Watts loss at rated current | 9 W |
| Interrupting rating | 200 kA RMS symmetrical (estimated 300 kA) |
| Main dimensions A / B / D / E | 50 / 51 / 59 / 45 mm (see datasheet drawing) |
| Contact thread | M8 |

