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OptiFuse FSF4A Fast Acting Glass Fuse

A 3.6 x 10 mm glass-bodied fast-acting fuse rated at 4 Amperes, designed for quick circuit protection in various electrical systems. Constructed with ceramic body and nickel brass caps, this fuse complies with North American standards and features a reliable, fast-acting response to overcurrent conditions. Ideal for use in electronic and electrical equipment requiring immediate protection against short circuits or overloads. The fuse's compact size and high interrupting rating make it suitable for a wide range of industrial and consumer applications, ensuring safety and durability.

Authorized Distributors
Source:DigiKey
Part No:FSF-4A
Stock:1712
Inv Date:06-05-2026
Price: Unit price: $1.05
Buy/RFQ:
Part No:FSF-4A
Stock:0
Inv Date:06-05-2026
Price: Unit price: $0.48
Buy/RFQ:
Part No:FSF-4A
Stock:0
Inv Date:06-05-2026
Price: Unit price: $0.6346
Buy/RFQ:
Part No:FSF-4A
Stock:0
Inv Date:06-05-2026
Price: Unit price: $0.6346
Buy/RFQ:

OptiFuse FSF4A Fast Acting Glass Fuse Specifications:

  • Fuse Type: Glass Tube, Fast Acting
  • Physical Dimensions: 3.6 x 10 mm
  • Materials: Ceramic body with Nickel Brass caps
  • Rated Current: 4A
  • Voltage Rating: 250V AC (implied standard)
  • Interrupting Rating: 50A at 250V AC
  • Operating Temperature: -55°C to 125°C
  • Standards: North American standards compliance
  • Lead Wire: Not specified
  • Construction: Compact, reliable for circuit protection

Buy the Optifuse Series FSF: 3.6 x 10 mm Fast Acting Glass Tube Fuse: FSF4A

Purchase the Optifuse FSF4A fast-acting glass fuse online to ensure reliable circuit protection for electrical and electronic devices. With a compact size of 3.6 x 10 mm and a rated current of 4A, this fuse offers quick response to overcurrent conditions, preventing damage and ensuring safety. Its ceramic body and nickel brass caps provide durability and consistent performance. Ideal for various industrial, commercial, and consumer applications, this fuse guarantees dependable operation and peace of mind for your electrical systems—buy now for high-quality circuit protection.

Get Optifuse FSF4A today—built for quick response and long-lasting durability in circuit protection applications.

Frequently Asked Questions

Where can I buy OptiFuse FSF4A?

You can click on the BUY or RFQ button to purchase FSF4A from an authorized OptiFuse distributor.

How do I troubleshoot issues or seek technical support for part FSF4A?

You can download the FSF4A datasheet or visit the OptiFuse website for support.

Who is the manufacturer of FSF4A?

OptiFuse

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