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OptiFuse FSO4A Automotive Glass Fuse

A 1/4 inch glass body fuse that is fast-acting and rated for 4 amps. Suitable for various electronic applications requiring quick circuit protection. This automotive fuse features a clear glass tube for visual indication of fuse status and complies with SAE specifications. Available in sizes ranging from 5/8 to 1-7/16 inches, it is designed for in-line holders and 4-inch clips. The fuse operates at voltages up to 32VDC, ensuring safe and reliable overcurrent protection for automotive circuits and electronic devices.

Authorized Distributors
Source:DigiKey
Part No:FSO-4A
Stock:29563
Inv Date:06-05-2026
Price: Unit price: $0.88
Buy/RFQ:
Part No:FSO-4A
Stock:89
Inv Date:06-05-2026
Price: Unit price: $0.3
Buy/RFQ:
Part No:FSO-4A
Stock:0
Inv Date:06-05-2026
Price: Unit price: $0.5288
Buy/RFQ:
Part No:FSO-4A
Stock:0
Inv Date:06-05-2026
Price: Unit price: $0.5288
Buy/RFQ:

OptiFuse FSO4A Automotive Glass Fuse Specifications:

  • Size: 1/4 inch (6.3mm) diameter
  • Ampere Rating: 4A (also available up to 30A)
  • Voltage Rating: 32VDC and less
  • Total Length: 5/8 inches (15.9mm)
  • Material: Glass tube with metal end caps
  • Type: Fast-acting, glass body fuse
  • Standards: SAE specifications compliant
  • Visual indicator: Clear glass for easy fuse status inspection
  • Application: Automotive and electronic circuit protection
  • In-line holder compatibility: Suitable for in-line holders and 4-inch clips
  • Warning: Use within specified ratings to prevent damage or fire hazard
  • Note: Designed for occasional overcurrent protection, not for repeated or prolonged trips

Buy the OptiFuse Series FSO Glass Fuse: FSO4A

Purchase the OptiFuse FSO4A fast-acting glass fuse online today and safeguard your electronic and automotive circuits. With a 4A rating and visual indicator, this fuse provides quick overcurrent protection in a compact 1/4 inch size. Its clear glass body allows easy monitoring, ensuring safety and reliability. Compatible with in-line holders and clips, it is ideal for car, motorcycle, and electronic device applications. Order now to experience durable, high-quality circuit safeguarding with fast response times and straightforward installation. Trust OptiFuse for your circuit protection needs.

Buy OptiFuse FSO4A fast-acting glass fuse now and ensure reliable circuit protection for automotive and electronic applications with ease.

Frequently Asked Questions

Where can I buy OptiFuse FSO4A?

You can click on the BUY or RFQ button to purchase FSO4A from an authorized OptiFuse distributor.

How do I troubleshoot issues or seek technical support for part FSO4A?

You can download the FSO4A datasheet or visit the OptiFuse website for support.

Who is the manufacturer of FSO4A?

OptiFuse

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