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Bussmann CHSF-300 500V AC 300A CHSF Series Fuse
Eaton Bussmann

Bussmann CHSF-300 500V AC 300A CHSF Series Fuse

Part Number: CHSF-300

● LT: 8-12w

500V AC 300A CHSF Series fuse, 85,382 A²s clearing I²t.

Rated Current300A
Rated Voltage500V AC/DC
Breaking Capacity200kA AC / 50kA DC
PackageCompact High Speed
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aR fast acting (f) fuse 300A 500V AC, CHSF Series (Compact High Speed). Power converters, Battery protection, DC drives, Energy storage. Low I²t 85,382 A²s, low watt loss 36.0W. UL Recognized, CE, IEC 60269-4 compliant.

Quick answer, specifications & FAQ
Direct answer

Eaton Bussmann High-Speed Fuse CHSF-300 is rated 300A, 500V AC/DC, Fast Acting, Compact High Speed. Breaking capacity 200kA AC / 50kA DC, I²t 85.4k A²s, operating temperature -40°C to +125°C, certifications UL Recognized · CSA Component Acceptance · IEC aR · CE · RoHS. Listed applications: Battery protection, Energy Storage, Motor Drives, Power conversion. Standards: IEC 60269-4, JASO D622. 500V AC 300A CHSF Series fuse, 85,382 A²s clearing I²t.

Last updated 23 days ago

Key specifications

  • Part number: CHSF-300
  • Brand: Eaton Bussmann
  • Rated current: 300A
  • Rated voltage: 500V AC/DC
  • Breaking capacity: 200kA AC / 50kA DC
  • Fuse speed: Fast Acting
  • Package size: Compact High Speed
  • Dimensions: 92×30mm overall; 53mm body length
  • Terminal type: Bolted tag
  • Operating temperature: -40°C to +125°C
  • Certifications: UL Recognized · CSA Component Acceptance · IEC aR · CE · RoHS
  • Standards: IEC 60269-4, JASO D622

Frequently asked questions

What are the current and voltage ratings of CHSF-300?

CHSF-300 is rated 300A at 500V AC/DC.

What is the breaking capacity of CHSF-300?

CHSF-300 has a breaking capacity of 200kA AC / 50kA DC. Confirm this covers the available fault current at the installation point.

What package size does CHSF-300 use?

CHSF-300 uses Compact High Speed package size.

Which standards and approvals apply to CHSF-300?

CHSF-300 is listed under IEC 60269-4, JASO D622 / UL Recognized · CSA Component Acceptance · IEC aR · CE · RoHS.

What is CHSF-300 used for?

CHSF-300 is listed for Battery protection, Energy Storage, Motor Drives, Power conversion applications. Verify suitability for your circuit before ordering.

What are the ordering terms for CHSF-300?

CHSF-300: typical lead time 12-16 weeks, minimum order 10 pcs. Submit a quote request for a firm quotation.

Data sources

Part number
CHSF-300
Brand
Eaton Bussmann
Last updated
2026-10-10
Canonical URL
https://fusestock.com/products/eaton-bussmann-chsf-300/

Technical Specifications

Part Number
CHSF-300
Manufacturer Part Number
CHSF-300
Series
CHSF Series (Compact High Speed)
Fuse Type
High-Speed Fuse
Current Rating
300A
Voltage Rating
500V AC/DC
AC / DC
AC/DC
Breaking Capacity
200kA AC / 50kA DC
I²t
85.4k A²s
Pre-arcing I²t
12,151 A²s
Total I²t
85382
Operating Temperature
-40°C to +125°C
Package / Dimensions
Compact High Speed
Mounting
Bolt Mount
Application
Battery protection · Energy Storage · Motor Drives · Power conversion
Standard
IEC 60269-4 · JASO D622
Terminal Type
Bolted tag
Fuse Speed
Fast Acting
Utilization Class
aR
Approvals
CE · CSA Approval (Unspecified) · RoHS · UL Recognized
Certifications
UL Recognized · CSA Component Acceptance · IEC aR · CE · RoHS
Reference Lead Time
12-16 weeks
Minimum Order
10 pcs
Sample Status
Contact for Availability
AC clearing I²t @ 500Vac/200kA
85,382 A²s
Watt loss @ 80% In
34.8W

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