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Eaton Bussmann 120FEE 120A 690V AC / 500V DC (IEC); 700V AC / 500V DC (UL) Class aR BS88 High-Speed Semiconductor Fuse
Eaton Bussmann

Eaton Bussmann 120FEE 120A 690V AC / 500V DC (IEC); 700V AC / 500V DC (UL) Class aR BS88 High-Speed Semiconductor Fuse

Part Number: 120FEE

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120FEE: 120A; 690V AC / 500V DC (IEC); 700V AC / 500V DC (UL); Class aR; High-Speed; 200kA AC / 50kA DC.

Rated Current120A
Rated Voltage690V AC / 500V DC (IEC); 700V AC / 500V DC (UL)
Breaking Capacity200kA AC / 50kA DC
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Eaton Bussmann 120FEE is a bs88 high-speed semiconductor fuse rated 120A at 690V AC / 500V DC (IEC); 700V AC / 500V DC (UL). Interrupting/withstand rating: 200kA AC / 50kA DC. Typical applications: DC common bus, DC drives, Power converters, Rectifiers, Reduced-voltage starters. Source: Bussmann Full Line Catalog 1007 (2018), page 4-17 to 4-18.

Quick answer, specifications & FAQ
Direct answer

Eaton Bussmann High-Speed BS88 Fuse 120FEE is rated 120A, 690V AC / 500V DC (IEC); 700V AC / 500V DC (UL), High Speed. Breaking capacity 200kA AC / 50kA DC, I²t Pre-arcing 540 A²s; clearing 1900 A²s @415Vac; 3100 A²s @660Vac, certifications IEC 60269-4|BS88-4|CE|UL Recognized by catalog number. Listed applications: DC Bus Protection, Motor Drives, Motor Starters, Power conversion. Standards: BS88 Part 4, IEC, IEC 60269-4. 120FEE: 120A; 690V AC / 500V DC (IEC); 700V AC / 500V DC (UL); Class aR; High-Speed; 200kA AC / 50kA DC.

Last updated 41 days ago

Key specifications

  • Part number: 120FEE
  • Brand: Eaton Bussmann
  • Rated current: 120A
  • Rated voltage: 690V AC / 500V DC (IEC); 700V AC / 500V DC (UL)
  • Breaking capacity: 200kA AC / 50kA DC
  • Fuse speed: High Speed
  • Terminal type: Bolted Tag
  • Certifications: IEC 60269-4|BS88-4|CE|UL Recognized by catalog number
  • Standards: BS88 Part 4, IEC, IEC 60269-4
  • Typical lead time: 12-16 weeks
  • Source: Bussmann Full Line Catalog 1007 (2018), page 4-17 to 4-18. Catalog watts loss at rated current: 32 W.

Frequently asked questions

What are the current and voltage ratings of 120FEE?

120FEE is rated 120A at 690V AC / 500V DC (IEC); 700V AC / 500V DC (UL).

What is the breaking capacity of 120FEE?

120FEE has a breaking capacity of 200kA AC / 50kA DC. Confirm this covers the available fault current at the installation point.

Which standards and approvals apply to 120FEE?

120FEE is listed under BS88 Part 4, IEC, IEC 60269-4 / IEC 60269-4|BS88-4|CE|UL Recognized by catalog number.

What is 120FEE used for?

120FEE is listed for DC Bus Protection, Motor Drives, Motor Starters, Power conversion applications. Verify suitability for your circuit before ordering.

What are the ordering terms for 120FEE?

120FEE: typical lead time 12-16 weeks. Submit a quote request for a firm quotation.

Data sources

Part number
120FEE
Brand
Eaton Bussmann
Last updated
2026-09-22
Canonical URL
https://fusestock.com/products/eaton-bussmann-120fee/

Technical Specifications

Part Number
120FEE
Manufacturer Part Number
120FEE
Series
FEE Series (BS88 High-Speed aR)
Fuse Type
High-Speed BS88 Fuse
Current Rating
120A
Voltage Rating
690V AC / 500V DC (IEC); 700V AC / 500V DC (UL)
AC / DC
AC/DC
Breaking Capacity
200kA AC / 50kA DC
I²t
Pre-arcing 540 A²s; clearing 1900 A²s @415Vac; 3100 A²s @660Vac
Pre-arcing I²t
540
Total I²t
3100
Mounting
Bolt Mount
Application
DC Bus Protection · Motor Drives · Motor Starters · Power conversion · Rectifiers
Standard
BS88 Part 4 · IEC · IEC 60269-4
Terminal Type
Bolted Tag
Fuse Speed
High Speed
Utilization Class
aR
Approvals
BS88 · CE · UL Recognized by catalog number
Certifications
IEC 60269-4|BS88-4|CE|UL Recognized by catalog number
Reference Lead Time
12-16 weeks
Source
Bussmann Full Line Catalog 1007 (2018), page 4-17 to 4-18. Catalog watts loss at rated current: 32 W.

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