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Eaton Bussmann

Bussmann FWA-70B 150V 70A FWA Series Fuse

Part Number: FWA-70B

● LT: 8-12w

150V 70A FWA Series fuse, 4,000 A²s clearing I²t.

Rated Current70A
Rated Voltage150V AC/DC
Breaking Capacity200kA RMS Sym.
PackageBolted Tag

aR fast acting (f) fuse 70A 150V, FWA Series (150V AC/DC Bolted Tag High-Speed). Power converters, Battery protection, DC drives. Low I²t 4,000 A²s, low watt loss 6.9W. UL Recognized, CE, IEC 60269-4 compliant.

Quick answer, specifications & FAQ
Direct answer

Eaton Bussmann High-Speed Fuse FWA-70B is rated 70A, 150V AC/DC, Fast Acting. Breaking capacity 200kA RMS Sym., I²t 4.0k A²s, operating temperature -40°C to +125°C, certifications UL Recognized|CE|IEC 60269-4. Listed applications: Battery protection, Motor Drives, Power conversion. Standards: IEC 60269-4. 150V 70A FWA Series fuse, 4,000 A²s clearing I²t.

Last updated 23 days ago

Key specifications

  • Part number: FWA-70B
  • Brand: Eaton Bussmann
  • Rated current: 70A
  • Rated voltage: 150V AC/DC
  • Breaking capacity: 200kA RMS Sym.
  • Fuse speed: Fast Acting
  • Dimensions: Bolted Tag
  • Terminal type: Bolted tag
  • Operating temperature: -40°C to +125°C
  • Certifications: UL Recognized|CE|IEC 60269-4
  • Standards: IEC 60269-4
  • Typical lead time: 12-16 weeks

Frequently asked questions

What are the current and voltage ratings of FWA-70B?

FWA-70B is rated 70A at 150V AC/DC.

What is the breaking capacity of FWA-70B?

FWA-70B has a breaking capacity of 200kA RMS Sym.. Confirm this covers the available fault current at the installation point.

Which standards and approvals apply to FWA-70B?

FWA-70B is listed under IEC 60269-4 / UL Recognized|CE|IEC 60269-4.

What is FWA-70B used for?

FWA-70B is listed for Battery protection, Motor Drives, Power conversion applications. Verify suitability for your circuit before ordering.

What are the ordering terms for FWA-70B?

FWA-70B: typical lead time 12-16 weeks, minimum order 10 pcs. Submit a quote request for a firm quotation.

Data sources

Part number
FWA-70B
Brand
Eaton Bussmann
Last updated
2026-10-10
Canonical URL
https://fusestock.com/products/eaton-bussmann-fwa-70b/

Technical Specifications

Part Number
FWA-70B
Manufacturer Part Number
FWA-70B
Series
FWA Series (150V AC Bolted Tag High-Speed)
Fuse Type
High-Speed Fuse
Current Rating
70A
Voltage Rating
150V AC/DC
AC / DC
AC/DC
Breaking Capacity
200kA RMS Sym.
I²t
4.0k A²s
Pre-arcing I²t
470 A²s
Total I²t
4000
Operating Temperature
-40°C to +125°C
Package / Dimensions
Bolted Tag
Mounting
Bolt Mount
Application
Battery protection · Motor Drives · Power conversion
Standard
IEC 60269-4
Terminal Type
Bolted tag
Fuse Speed
Fast Acting
Utilization Class
aR
Approvals
CE · CSA Approval (Unspecified) · RoHS · UL Recognized
Certifications
UL Recognized|CE|IEC 60269-4
Reference Lead Time
12-16 weeks
Minimum Order
10 pcs
Sample Status
Contact for Availability
Clearing I²t
4,000 A²s
Watt Loss @ In
6.9W