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
TRS600RID Mersen USA Newburyport-MA L.L.C.

TRS600RID

600V 600A TD RK5 FUSE SMARTSPO

Mersen USA Newburyport-MA L.L.C.

3,221
RFQ
TRS600RID Datasheet

Datasheet

TRS-R Cylindrical, Blade Terminals Box Active Requires Holder Cartridge 600A 600 VAC 600 VDC Slow Blow Electrical, Industrial Indicating RK5 CSA, UL - 200kA AC, 100kA DC 3.150" Dia x 13.386" L (80.00mm x 340.00mm) - -
A6D600R Mersen USA Newburyport-MA L.L.C.

A6D600R

600V 600A RK1 TD FUSE

Mersen USA Newburyport-MA L.L.C.

2,625
RFQ
A6D600R Datasheet

Datasheet

A6D-R Cylindrical, Blade Terminals Box Active Requires Holder Cartridge 600A 600 VAC 600 VDC Slow Blow Electrical, Industrial - RK1 CSA, UL - 200kA AC, 100kA DC 3.150" Dia x 13.386" L (80.00mm x 340.00mm) - -
A4J600 Mersen USA Newburyport-MA L.L.C.

A4J600

600V 600A CLASS J FUSE

Mersen USA Newburyport-MA L.L.C.

2,462
RFQ
A4J600 Datasheet

Datasheet

A4J Cylindrical, Blade Terminal (Bolt) Box Active Bolt Mount Cartridge 600A 600 VAC 300 VDC Fast Blow Electrical, Industrial - J CSA, UL - 200kA AC, 100kA DC 2.520" Dia x 7.992" L (64.00mm x 203.00mm) - -
PSR072FL0550Z Littelfuse Inc.

PSR072FL0550Z

FUSE SQUARE 550A 1.3KVAC/1KVDC

Littelfuse Inc.

4,176
RFQ
PSR072FL0550Z Datasheet

Datasheet

POWR-SPEED® PSR - Bulk Active Bolt Mount Square 550A 1.3 kVAC 1 kVDC Fast Blow Semiconductors - - CCC, CE, cURus, UL -55°C ~ 125°C 100kA AC, 150kA DC 2.953" L x 2.362" W x 2.598" H (75.00mm x 60.00mm x 66.00mm) - -
L50QS700.X Littelfuse Inc.

L50QS700.X

FUSE CRTRDGE 700A 500VAC/VDC

Littelfuse Inc.

3,839
RFQ
L50QS700.X Datasheet

Datasheet

POWR-SPEED™ L50QS Cylindrical, Blade Terminal (Bolt) Box Active Bolt Mount Cartridge 700A 500 VAC 500 VDC Fast Blow Semiconductors - - CE, cURus, UR -55°C ~ 125°C 200kA AC, 50kA DC 2.500" Dia x 6.187" L (63.50mm x 157.15mm) - -
170M3744 Eaton - Bussmann Electrical Division

170M3744

FUSE SQUARE 200A 1.3KVAC RECT

Eaton - Bussmann Electrical Division

3,111
RFQ
170M3744 Datasheet

Datasheet

- Rectangular, Blade Bulk Active Bolt Mount Square 200A 1.3 kVAC - - Electrical, Industrial Indicating - CSA, UR - 100kA 2.913" L x 1.772" W x 2.323" H (74.00mm x 45.00mm x 59.00mm) - -
A6D500R Mersen USA Newburyport-MA L.L.C.

A6D500R

600V 500A RK1 TD FUSE

Mersen USA Newburyport-MA L.L.C.

3,434
RFQ
A6D500R Datasheet

Datasheet

A6D-R Cylindrical, Blade Terminals Box Active Requires Holder Cartridge 500A 600 VAC 600 VDC Slow Blow Electrical, Industrial - RK1 CSA, UL - 200kA AC, 100kA DC 3.150" Dia x 13.386" L (80.00mm x 340.00mm) - -
A3T1200 Mersen USA Newburyport-MA L.L.C.

A3T1200

FUSE,CLASS T,FAST ACTING,200KA A

Mersen USA Newburyport-MA L.L.C.

4,787
RFQ
A3T1200 Datasheet

Datasheet

A3T Cylindrical, Blade Terminal (Bolt) Box Active Bolt Mount Cartridge 1.2kA 300 VAC 160 VDC Fast Blow Electrical, Industrial - T CSA, UL - 200kA AC, 50kA DC 2.520" Dia x 4.016" L (64.00mm x 102.00mm) - -
A6K400R Mersen USA Newburyport-MA L.L.C.

A6K400R

FUSE,FAST ACTING,CLASSRK1,REJECT

Mersen USA Newburyport-MA L.L.C.

4,633
RFQ
A6K400R Datasheet

Datasheet

A6K-R Cylindrical, Blade Terminals Box Active Requires Holder Cartridge 400A 600 VAC 300 VDC Fast Blow Electrical, Industrial - RK1 CSA, UL - 200kA AC, 20kA DC 2.598" Dia x 11.614" L (66.00mm x 295.00mm) - -
PSR073FL0700Z Littelfuse Inc.

PSR073FL0700Z

FUSE SQUARE 700A 1.3KVAC/1KVDC

Littelfuse Inc.

2,026
RFQ
PSR073FL0700Z Datasheet

Datasheet

POWR-SPEED® PSR - Box Active Bolt Mount Square 700A 1.3 kVAC 1 kVDC Fast Blow Semiconductors Indicating - CCC, CE, cURus, UL -55°C ~ 125°C 100kA AC, 150kA DC 2.953" L x 2.894" W x 3.130" H (75.00mm x 73.50mm x 79.50mm) - -
A480R3R-1 Mersen USA Newburyport-MA L.L.C.

A480R3R-1

FUSE,MOTOR PROTECTION,FERRULE MO

Mersen USA Newburyport-MA L.L.C.

3,804
RFQ
A480R3R-1 Datasheet

Datasheet

9F60 Cartridge, Non-Standard Box Active Requires Holder Cartridge 3A 4.8 kVAC - Fast Blow Motor Protection Indicating - UR - 65kA 3.000" Dia x 15.866" L (76.20mm x 403.00mm) - -
A480R4R-1 Mersen USA Newburyport-MA L.L.C.

A480R4R-1

FUSE,MOTOR PROTECTION,FERRULE MO

Mersen USA Newburyport-MA L.L.C.

4,122
RFQ
A480R4R-1 Datasheet

Datasheet

9F60 Cartridge, Non-Standard Box Active Requires Holder Cartridge 4A 4.8 kVAC - Fast Blow Motor Protection Indicating - UR - 65kA 3.000" Dia x 15.866" L (76.20mm x 403.00mm) - -
A4BQ1200 Mersen USA Newburyport-MA L.L.C.

A4BQ1200

L TD FUSE 600V 1200A A4BQ

Mersen USA Newburyport-MA L.L.C.

4,198
RFQ
A4BQ1200 Datasheet

Datasheet

A4BQ Cylindrical, Blade Terminal (Bolt) Box Active Bolt Mount Cartridge 1.2kA 600 VAC 500 VDC Slow Blow Electrical, Industrial Indicating L CSA, UL - 200kA AC, 100kA DC 2.480" Dia x 10.748" L (63.00mm x 273.00mm) - -
A4BY1200 Mersen USA Newburyport-MA L.L.C.

A4BY1200

L TD FUSE 600V 1200A A4BY

Mersen USA Newburyport-MA L.L.C.

3,624
RFQ
A4BY1200 Datasheet

Datasheet

A4BY Cylindrical, Blade Terminal (Bolt) Box Active Bolt Mount Cartridge 1.2kA 600 VAC 300 VDC Slow Blow Electrical, Industrial - L CSA, UL - 200kA AC, 100kA DC 2.480" Dia x 10.748" L (63.00mm x 273.00mm) - -
A4BY800 Mersen USA Newburyport-MA L.L.C.

A4BY800

L TD FUSE 600V 800A A4BY

Mersen USA Newburyport-MA L.L.C.

3,164
RFQ
A4BY800 Datasheet

Datasheet

A4BY Cylindrical, Blade Terminal (Bolt) Box Active Bolt Mount Cartridge 800A 600 VAC 300 VDC Slow Blow Electrical, Industrial - L CSA, UL - 200kA AC, 100kA DC 2.480" Dia x 8.622" L (63.00mm x 219.00mm) - -
A4BY1000 Mersen USA Newburyport-MA L.L.C.

A4BY1000

FUSE,CLASS L,TIME DELAY,200KA AC

Mersen USA Newburyport-MA L.L.C.

4,526
RFQ
A4BY1000 Datasheet

Datasheet

A4BY Cylindrical, Blade Terminal (Bolt) Box Active Bolt Mount Cartridge 1kA 600 VAC 300 VDC Slow Blow Electrical, Industrial - L CSA, UL - 200kA AC, 100kA DC 2.480" Dia x 10.748" L (63.00mm x 273.00mm) - -
SPFJ450.X Littelfuse Inc.

SPFJ450.X

FUSE CARTRIDGE 450A 600VAC/1KVDC

Littelfuse Inc.

3,798
RFQ
SPFJ450.X Datasheet

Datasheet

POWR-GARD® SPFJ Cylindrical, Blade Terminals Box Active Requires Holder Cartridge 450A 600 VAC 1 kVDC Fast Blow Solar (Photovoltaic) - J CE, cULus, UL, VDE - 200kA AC, 20kA DC 2.500" Dia x 8.000" L (63.50mm x 203.20mm) - -
A4BY600 Mersen USA Newburyport-MA L.L.C.

A4BY600

FUSE,CLASS L,TIME DELAY,200KA AC

Mersen USA Newburyport-MA L.L.C.

2,759
RFQ
A4BY600 Datasheet

Datasheet

A4BY Cylindrical, Blade Terminal (Bolt) Box Active Bolt Mount Cartridge 600A 600 VAC 300 VDC Slow Blow Electrical, Industrial - L CSA, UL - 200kA AC, 100kA DC 2.008" Dia x 8.622" L (51.00mm x 219.00mm) - -
A4BT800 Mersen USA Newburyport-MA L.L.C.

A4BT800

FUSE,CLASS L,TIME DELAY,200KA AC

Mersen USA Newburyport-MA L.L.C.

3,217
RFQ
A4BT800 Datasheet

Datasheet

A4BT Cylindrical, Blade Terminal (Bolt) Box Active Bolt Mount Cartridge 800A 600 VAC 500 VDC Slow Blow Electrical, Industrial - L CSA, UL - 200kA AC, 100kA DC 2.480" Dia x 8.622" L (63.00mm x 219.00mm) - -
A4BT1200 Mersen USA Newburyport-MA L.L.C.

A4BT1200

FUSE,CLASS L,TIME DELAY,200KA AC

Mersen USA Newburyport-MA L.L.C.

2,811
RFQ
A4BT1200 Datasheet

Datasheet

A4BT Cylindrical, Blade Terminal (Bolt) Box Active Bolt Mount Cartridge 1.2kA 600 VAC 500 VDC Slow Blow Electrical, Industrial - L CSA, UL - 200kA AC, 100kA DC 2.480" Dia x 10.748" L (63.00mm x 273.00mm) - -
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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.