Eaton Bussmann 56ET 56A 690V AC / 500V DC (IEC); 700V AC / 500V DC (UL) Class aR BS88 High-Speed Semiconductor Fuse
● Check availability56ET: 56A; 690V AC / 500V DC (IEC); 700V AC / 500V DC (UL); Class aR; High-Speed; 200kA AC / 50kA DC.
Rated Current56A
Rated Voltage690V AC / 500V DC (IEC); 700V AC / 500V DC (UL)
Breaking Capacity200kA AC / 50kA DC
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Part Number56ETBrandEaton BussmannRequested Qty
Eaton Bussmann 56ET is a bs88 high-speed semiconductor fuse rated 56A 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 56ET is rated 56A, 690V AC / 500V DC (IEC); 700V AC / 500V DC (UL), High Speed. Breaking capacity 200kA AC / 50kA DC, I²t Pre-arcing 135 A²s; clearing 950 A²s @415Vac; 1500 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. 56ET: 56A; 690V AC / 500V DC (IEC); 700V AC / 500V DC (UL); Class aR; High-Speed; 200kA AC / 50kA DC.
Key specifications
- Part number: 56ET
- Brand: Eaton Bussmann
- Rated current: 56A
- 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: 14 W.
Frequently asked questions
What are the current and voltage ratings of 56ET?
56ET is rated 56A at 690V AC / 500V DC (IEC); 700V AC / 500V DC (UL).
What is the breaking capacity of 56ET?
56ET 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 56ET?
56ET is listed under BS88 Part 4, IEC, IEC 60269-4 / IEC 60269-4|BS88-4|CE|UL Recognized by catalog number.
What is 56ET used for?
56ET 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 56ET?
56ET: typical lead time 12-16 weeks. Submit a quote request for a firm quotation.
Data sources
- Part number
- 56ET
- Brand
- Eaton Bussmann
- Last updated
- 2026-09-22
- Canonical URL
- https://fusestock.com/products/eaton-bussmann-56et/
Technical Specifications
- Part Number
- 56ET
- Manufacturer Part Number
- 56ET
- Series
- ET Series (BS88 High-Speed aR)
- Fuse Type
- High-Speed BS88 Fuse
- Current Rating
- 56A
- 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 135 A²s; clearing 950 A²s @415Vac; 1500 A²s @660Vac
- Pre-arcing I²t
- 135
- Total I²t
- 1500
- 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: 14 W.
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