Electrical, Specialty Fuses

Manufacturer Series Package / Case Packaging Product Status Mounting Type Fuse Type Current Rating (Amps) Voltage Rating - AC Voltage Rating - DC Response Time Applications Features Class Approval Agency Operating Temperature Breaking Capacity @ Rated Voltage Size / Dimension Grade Qualification






























































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































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Photo Mfr. Part # Availability Price Quantity Datasheet Series Package / Case Packaging Product Status Mounting Type Fuse Type Current Rating (Amps) Voltage Rating - AC Voltage Rating - DC Response Time Applications Features Class Approval Agency Operating Temperature Breaking Capacity @ Rated Voltage Size / Dimension Grade Qualification
PSR031UL0250Z Littelfuse Inc.

PSR031UL0250Z

FUSE SQUARE 250A 700VAC/600VDC

Littelfuse Inc.

3,104
RFQ
PSR031UL0250Z Datasheet

Datasheet

POWR-SPEED® PSR - Box Active Bolt Mount Square 250A 700 VAC 600 VDC Fast Blow Semiconductors Indicating - CE, cURus, UL -55°C ~ 125°C 200kA AC, 150kA DC 1.898" L x 2.028" W x 2.264" H (48.20mm x 51.50mm x 57.50mm) - -
PSR031UL0350Z Littelfuse Inc.

PSR031UL0350Z

FUSE SQUARE 350A 700VAC/600VDC

Littelfuse Inc.

2,373
RFQ
PSR031UL0350Z Datasheet

Datasheet

POWR-SPEED® PSR - Box Active Bolt Mount Square 350A 700 VAC 600 VDC Fast Blow Semiconductors Indicating - CE, cURus, UL -55°C ~ 125°C 200kA AC, 150kA DC 1.898" L x 2.028" W x 2.264" H (48.20mm x 51.50mm x 57.50mm) - -
FWH-300A Eaton - Bussmann Electrical Division

FWH-300A

FUSE CARTRIDGE 300A 500VAC/VDC

Eaton - Bussmann Electrical Division

8,552
RFQ
FWH-300A Datasheet

Datasheet

FWH Cylindrical, Blade Terminal (Bolt) Bulk Active Bolt Mount Cartridge 300A 500 VAC 500 VDC - Electrical, Industrial - - CE, CSA, UR - 200kA AC, 50kA DC 1.500" Dia x 4.340" L (38.10mm x 110.24mm) - -
FWH-325A Eaton - Bussmann Electrical Division

FWH-325A

FUSE CARTRIDGE 325A 500VAC/VDC

Eaton - Bussmann Electrical Division

9,643
RFQ
FWH-325A Datasheet

Datasheet

FWH Cylindrical, Blade Terminal (Bolt) Bulk Active Bolt Mount Cartridge 325A 500 VAC 500 VDC - Electrical, Industrial - - CE, CSA, UR - 200kA AC, 50kA DC 1.500" Dia x 4.340" L (38.10mm x 110.24mm) - -
FRS-R-110 Eaton - Bussmann Electrical Division

FRS-R-110

FUSE CRTRDGE 110A 600VAC/300VDC

Eaton - Bussmann Electrical Division

4,561
RFQ
FRS-R-110 Datasheet

Datasheet

Fusetron™ FRS-R Cartridge, Non-Standard Bulk Active Requires Holder Cartridge 110A 600 VAC 300 VDC Slow Blow Electrical, Industrial - RK5 CE, CSA, UL - 200kA AC, 20kA DC 1.610" Dia x 9.630" L (40.89mm x 244.60mm) - -
FRS-R-175 Eaton - Bussmann Electrical Division

FRS-R-175

FUSE CRTRDGE 175A 600VAC/300VDC

Eaton - Bussmann Electrical Division

7,875
RFQ
FRS-R-175 Datasheet

Datasheet

Fusetron™ FRS-R Cartridge, Non-Standard Bulk Active Requires Holder Cartridge 175A 600 VAC 300 VDC Slow Blow Electrical, Industrial - RK5 CE, CSA, UL - 200kA AC, 20kA DC 1.610" Dia x 9.630" L (40.89mm x 244.60mm) - -
PSR031DS0450Z Littelfuse Inc.

PSR031DS0450Z

FUSE SQUARE 450A 700VAC/600VDC

Littelfuse Inc.

7,692
RFQ
PSR031DS0450Z Datasheet

Datasheet

POWR-SPEED® PSR - Box Active Bolt Mount Square 450A 700 VAC 600 VDC Fast Blow Semiconductors Indicating - CCC, CE, cURus, UL -55°C ~ 125°C 200kA AC, 150kA DC 1.898" L x 2.028" W x 2.264" H (48.20mm x 51.50mm x 57.50mm) - -
PSR031US0500Z Littelfuse Inc.

PSR031US0500Z

FUSE SQUARE 500A 700VAC/600VDC

Littelfuse Inc.

4,834
RFQ
PSR031US0500Z Datasheet

Datasheet

POWR-SPEED® PSR - Box Active Bolt Mount Square 500A 700 VAC 600 VDC Fast Blow Semiconductors Indicating - CE, cURus, UL -55°C ~ 125°C 200kA AC, 150kA DC 1.898" L x 2.028" W x 2.264" H (48.20mm x 51.50mm x 57.50mm) - -
PSR031US0630Z Littelfuse Inc.

PSR031US0630Z

FUSE SQUARE 630A 700VAC/600VDC

Littelfuse Inc.

7,097
RFQ
PSR031US0630Z Datasheet

Datasheet

POWR-SPEED® PSR - Box Active Bolt Mount Square 630A 700 VAC 600 VDC Fast Blow Semiconductors Indicating - CE, cURus, UL -55°C ~ 125°C 200kA AC, 150kA DC 1.898" L x 2.028" W x 2.264" H (48.20mm x 51.50mm x 57.50mm) - -
PSR031DS0630Z Littelfuse Inc.

PSR031DS0630Z

FUSE SQUARE 630A 700VAC/600VDC

Littelfuse Inc.

2,982
RFQ
PSR031DS0630Z Datasheet

Datasheet

POWR-SPEED® PSR - Box Active Bolt Mount Square 630A 700 VAC 600 VDC Fast Blow Semiconductors Indicating - CCC, CE, cURus, UL -55°C ~ 125°C 200kA AC, 150kA DC 1.898" L x 2.028" W x 2.264" H (48.20mm x 51.50mm x 57.50mm) - -
PSR031US0450Z Littelfuse Inc.

PSR031US0450Z

FUSE SQUARE 450A 700VAC/600VDC

Littelfuse Inc.

7,618
RFQ
PSR031US0450Z Datasheet

Datasheet

POWR-SPEED® PSR - Box Active Bolt Mount Square 450A 700 VAC 600 VDC Fast Blow Semiconductors Indicating - CE, cURus, UL -55°C ~ 125°C 200kA AC, 150kA DC 1.898" L x 2.028" W x 2.264" H (48.20mm x 51.50mm x 57.50mm) - -
PSR031DS0500Z Littelfuse Inc.

PSR031DS0500Z

FUSE SQUARE 500A 700VAC/600VDC

Littelfuse Inc.

3,147
RFQ
PSR031DS0500Z Datasheet

Datasheet

POWR-SPEED® PSR - Box Active Bolt Mount Square 500A 700 VAC 600 VDC Fast Blow Semiconductors Indicating - CCC, CE, cURus, UL -55°C ~ 125°C 200kA AC, 150kA DC 1.898" L x 2.028" W x 2.264" H (48.20mm x 51.50mm x 57.50mm) - -
PSR031DS0550Z Littelfuse Inc.

PSR031DS0550Z

FUSE SQUARE 550A 700VAC/600VDC

Littelfuse Inc.

6,881
RFQ
PSR031DS0550Z Datasheet

Datasheet

POWR-SPEED® PSR - Box Active Bolt Mount Square 550A 700 VAC 600 VDC Fast Blow Semiconductors Indicating - CCC, CE, cURus, UL -55°C ~ 125°C 200kA AC, 150kA DC 1.898" L x 2.028" W x 2.264" H (48.20mm x 51.50mm x 57.50mm) - -
PSR031US0550Z Littelfuse Inc.

PSR031US0550Z

FUSE SQUARE 550A 700VAC/600VDC

Littelfuse Inc.

6,963
RFQ
PSR031US0550Z Datasheet

Datasheet

POWR-SPEED® PSR - Box Active Bolt Mount Square 550A 700 VAC 600 VDC Fast Blow Semiconductors Indicating - CE, cURus, UL -55°C ~ 125°C 200kA AC, 150kA DC 1.898" L x 2.028" W x 2.264" H (48.20mm x 51.50mm x 57.50mm) - -
KWN-R-100 Eaton - Bussmann Electrical Division

KWN-R-100

FUSE LIMITRON FAST ACTING

Eaton - Bussmann Electrical Division

4,172
RFQ

-

* - Bulk Obsolete - - - - - - - - - - - - - - -
KWN-R-70 Eaton - Bussmann Electrical Division

KWN-R-70

FUSE LIMITRON FAST ACTING

Eaton - Bussmann Electrical Division

5,973
RFQ

-

* - Bulk Obsolete - - - - - - - - - - - - - - -
KWN-R-80 Eaton - Bussmann Electrical Division

KWN-R-80

FUSE LIMITRON FAST ACTING

Eaton - Bussmann Electrical Division

7,347
RFQ

-

* - Bulk Obsolete - - - - - - - - - - - - - - -
KWN-R-90 Eaton - Bussmann Electrical Division

KWN-R-90

FUSE LIMITRON FAST ACTING

Eaton - Bussmann Electrical Division

8,820
RFQ

-

* - Bulk Obsolete - - - - - - - - - - - - - - -
170M1761 Eaton - Bussmann Electrical Division

170M1761

FUSE SQUARE 315A 690V RECT

Eaton - Bussmann Electrical Division

4,057
RFQ
170M1761 Datasheet

Datasheet

- Rectangular, Blade Bulk Active Bolt Mount Square 315A - - - - - - UL - 50kA 2.126" L x 1.429" W x 0.945" H (54.00mm x 36.30mm x 24.00mm) - -
170M3019 Eaton - Bussmann Electrical Division

170M3019

FUSE SQUARE 400A 700VAC RECT

Eaton - Bussmann Electrical Division

7,827
RFQ
170M3019 Datasheet

Datasheet

- Rectangular, Blade Bulk Active Bolt Mount Square 400A 700 VAC - - Electrical, Industrial Indicating - CE, CSA, UR - 200kA 1.969" L x 1.772" W x 2.283" H (50.00mm x 45.00mm x 58.00mm) - -
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Electrical, Specialty Fuses Electronic Components Sourcing and Lifecycle Support

FPGAX is a global sourcing partner specializing in FPGA and programmable logic solutions for engineering and manufacturing organizations worldwide. For customers sourcing Electrical, Specialty Fuses components, we support both current production requirements and long-term component availability across demanding product lifecycles.

Our sourcing approach combines traceability, supply stability, and technical coordination. FPGAX is certified to AS9120B, ISO 9001:2008, and ISO 14001 standards and supports procurement programs where continuity, documentation, and dependable component supply are important.

How FPGAX Supports Electrical, Specialty Fuses Requirements

  • Active component sourcing: support for current FPGA, programmable logic, and related semiconductor requirements.
  • End-of-life sourcing: assistance with obsolete and hard-to-find parts when designs must remain in production.
  • Lifecycle management: sourcing support during product transitions, allocation periods, and supply interruptions.
  • Design continuity: long-term supply support intended to reduce redesign pressure and production disruption.
  • Major programmable logic brands: sourcing coverage includes Xilinx, Intel/Altera, Lattice, Microchip, and QuickLogic.

Supply Support at a Glance

Requirement FPGAX Support
Current production Active FPGA, programmable logic, and semiconductor component sourcing
Legacy programs End-of-life and hard-to-find component sourcing
Supply continuity Lifecycle transition and long-term availability support
Quality requirements Traceable sourcing and quality-management processes

Focused on FPGA and Programmable Logic Supply

FPGAX focuses on helping customers maintain access to critical programmable devices throughout the full component lifecycle. Whether the requirement is for a current design, an established production program, or an older platform facing component obsolescence, our goal is to provide a stable sourcing path and help customers maintain design and manufacturing continuity.

Electrical, Specialty Fuses FAQ

Can FPGAX source both active and end-of-life Electrical, Specialty Fuses components?

Yes. FPGAX supports sourcing for both active components and end-of-life or hard-to-find parts, with an emphasis on maintaining supply continuity for engineering and manufacturing programs.

Which programmable logic manufacturers does FPGAX support?

Our core sourcing coverage includes major FPGA and programmable logic manufacturers such as Xilinx, Intel/Altera, Lattice, Microchip, and QuickLogic, subject to specific part requirements and availability.

How does FPGAX help with component lifecycle changes?

We support customers through lifecycle transitions by helping locate current or legacy supply, reducing exposure to supply disruptions, and supporting long-term availability for designs that need to remain in production.

What quality and traceability standards does FPGAX follow?

FPGAX states certification to AS9120B, ISO 9001:2008, and ISO 14001 standards. Our sourcing services are structured around traceability, stable supply, and quality-management requirements.

What information should I provide for a Electrical, Specialty Fuses sourcing request?

Providing the manufacturer part number, required quantity, target delivery schedule, and any lifecycle or traceability requirements helps us evaluate the sourcing request more efficiently.