Skip to content
Eaton Bussmann

Bussmann 170M1321 Fuse

PRODUCT PRICE USD
$29.55

Available to order

Stock: 400
Request a Quote

Need multiple units or help confirming a model? Contact our team.

Payments

Available payment methods

  • PayPal
  • Bank transfer

Shop with confidence

30-Day Risk-Free Returns & Exchanges

Shop with complete confidence. Whatever the reason, enjoy hassle-free returns and exchanges within 30 days. We cover all shipping costs for both returns and exchanges—no extra shipping fees, no worries.

View Our Return Policy

Service Guarantee

Shipping

Free standard shipping within the U.S

Shipping details

Estimated delivery

Expected to arrive within 2–15 days

Delivery details

Enjoy greater discounts on bulk orders

Please contact our team for bulk purchases

Contact our team
Bussmann 170M1321 Fuse
PRODUCT DOCUMENTATION

Product Information

Technical specifications, features, applications and purchasing information.

Technical Specifications

Brand Bussmann
Model Number 170M1321
Product Category High Speed Square Body Fuse
Product Family 170M Series
Amperage Rating 250 A
Voltage Rating 690 V (IEC) / 700 V (UL)
Voltage Type AC
Breaking Capacity 200 kA
Class aR
Fuse Size 000
Clearing I²t at 660 V 51500 A²s
Pre-arc I²t 7750 A²s
Watt Losses 42 W
Fuse Type DIN 43653 U/80, without indicator, bolted tag
Mounting Bolted tag
Product Length/Depth 105 mm
Product Height 46 mm
Product Weight 140.3 g

Key Features

250 A aR Fuse

High speed aR fuse rated 250 A for semiconductor and DC link protection.

690 V AC / 700 V AC

Dual voltage rating for IEC and UL applications.

200 kA Breaking Capacity

Provides high fault current interruption capability.

Size 000 Square Body

DIN 43653 U/80 body with bolted tag terminals.

51500 A²s Clearing I²t

High clearing I²t at 660 V for robust short-circuit protection.

DC Drive Protection

Suitable for DC common bus, DC drives, and power converters.

Applications

  • Semiconductor protection
  • DC common bus
  • DC drives
  • Power converters and rectifiers
  • Industrial drives
  • UPS systems
  • Battery energy storage
  • Wind and solar inverters

Purchase Information

We support online purchase of the Bussmann 170M1321 High Speed Square Body Fuse. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.

Frequently Asked Questions

What is the Bussmann 170M1321? The 170M1321 is a high speed square body fuse rated 250 A at 690 V AC (IEC) / 700 V AC (UL).

What is the amperage rating? 250 A.

What is the voltage rating? 690 V AC (IEC) and 700 V AC (UL).

What is the breaking capacity? 200 kA.

What is the clearing I²t at 660 V? 51500 A²s.

What is the pre-arc I²t? 7750 A²s.

What class is the fuse? aR.

What is the mounting configuration? DIN 43653 U/80, bolted tag, without indicator.

What is the watt loss? 42 W.

What are typical applications? Semiconductor protection, DC bus, DC drives, and power converters.

What should be confirmed before ordering? Check circuit voltage, continuous current, fault level, fuse size, terminal type, and indicator needs.

?
Need help confirming a model?

Send us your part number and technical requirements.

Contact Our Team