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Eaton Bussmann FNQR4 Time Delay Fuse

This is a slow blow, time lag fuse rated for 600 VAC with a 4-amp current capacity. It features a cylindrical shape with a 5AG midget case, measuring 10.30mm in diameter and 38.00mm in length. Suitable for control circuit protection, small control transformers, and industrial applications, it provides reliable overcurrent protection with a time-delay characteristic. The fuse is designed for easy mounting in compatible holders and features high interrupting ratings up to 200kA RMS Sym, ensuring safety and equipment protection in demanding environments, compliant with UL and CSA standards.

Authorized Distributors
Source:Newark
Part No:FNQ-R-4
Stock:5
Inv Date:06-12-2026
Price: Unit price: $97.84
Buy/RFQ:
Source:DigiKey
Part No:FNQ-R-4
Stock:219
Inv Date:06-12-2026
Price: Unit price: $101.63
Buy/RFQ:
Part No:FNQ-R-4
Stock:34
Inv Date:06-13-2026
Price: Unit price: $89.14
Buy/RFQ:
Part No:FNQ-R-4
Stock:83
Inv Date:06-12-2026
Price: Unit price: $96.4
Buy/RFQ:
Part No:FNQ-R-4
Stock:22
Inv Date:06-12-2026
Price: Unit price: $58.77
Buy/RFQ:
Part No:FNQ-R-4
Stock:22
Inv Date:06-12-2026
Price: Unit price: $58.77
Buy/RFQ:

Eaton Bussmann FNQR4 Time Delay Fuse Specifications:

  • Voltage Rating: 600VAC
  • Current Rating: 4A
  • Package: Cylindrical, 5AG midget case
  • Diameter: 10.30mm
  • Length: 38.00mm
  • Interrupting Rating: 200kA Vac RMS Sym
  • Packed in holders compatible with control and industrial systems
  • Time-Delay: Yes
  • Certification: UL Listed, CSA Certified
  • Application: Control circuit transformers, branch circuits, line protection
  • RoHS compliant
  • Mounting: In holder suitable for DIN-Rail or panel mount

Buy the Buy Bussmann FNO-R4 Part Number FNQR4 Online

Secure your control circuits and transformers by purchasing the Bussmann FNO-R4 fuse online today. This 600VAC, 4A, slow blow fuse offers excellent current limitation, high interrupting capacity up to 200kA, and complies with UL and CSA standards. Its cylindrical 5AG case with a 10.30mm diameter and 38.00mm length ensures easy installation in compatible fuse holders. Perfect for industrial control systems, line protection, and short-circuit events, this fuse guarantees safety, reliability, and efficient operation for critical applications.

Buy Bussmann FNO-R4 fuse now and experience unmatched reliability and protection for your control devices and industrial systems.

Frequently Asked Questions

Where can I buy Eaton Bussmann FNQR4?

You can click on the BUY or RFQ button to purchase FNQR4 from an authorized Eaton Bussmann distributor.

How do I troubleshoot issues or seek technical support for part FNQR4?

You can download the FNQR4 datasheet or visit the Eaton Bussmann website for support.

Who is the manufacturer of FNQR4?

Eaton Bussmann

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