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Eaton Bussmann BK1S506400R Time-Delay Fuse

This is a slow blow, time lag fuse rated for 250 VAC with a current capacity of 0.4 Amps. It features a cylindrical package with dimensions of 5.20mm by 20.00mm and is designed for mounting in a holder. The fuse complies with IEC 60127-2/3 standards, offering reliable overcurrent protection for electrical circuits. It is suitable for various applications demanding high breaking capacity and precision timing, made with glass tube construction and nickel-plated brass endcaps. UL, CSA, VDE, BSI, and other approvals ensure safety and quality compliance.

Authorized Distributors
Source:Newark
Part No:BK1-S506-400-R
Stock:1298
Inv Date:06-11-2026
Price: Unit price: $1.65
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Source:DigiKey
Part No:BK1-S506-400-R
Stock:519
Inv Date:06-11-2026
Price: Unit price: $1.62
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Source:DigiKey
Part No:BK1/S506-400-R
Stock:519
Inv Date:06-11-2026
Price: Unit price: $1.62
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Part No:BK1/S506-400-R
Stock:645
Inv Date:06-12-2026
Price: Unit price: $1.35
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Part No:BK1/S506-400-R
Stock:0
Inv Date:06-11-2026
Price: Unit price: $1.62
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Part No:BK1/S506-400-R
Stock:1000
Inv Date:06-11-2026
Price: Unit price: $1.025
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Part No:BK1/S506-400-R
Stock:1000
Inv Date:06-11-2026
Price: Unit price: $1.025
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Part No:BK1-S506-400-R
Stock:0
Inv Date:06-11-2026
Price: Unit price: $0.24
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Eaton Bussmann BK1S506400R Time-Delay Fuse Specifications:

  • Voltage Rating: 250 VAC
  • Current Capacity: 0.4 Amps
  • Physical Size: 5 x 20mm
  • Material: Glass tube, nickel-plated brass endcaps
  • Construction: Slow blow, time lag fuse
  • Standards: IEC 60127-2/3
  • Approvals: UL Recognized, CSA, VDE, BSI, IMQ, PSEWET, CCC, cURus
  • Melting I't: 1050 x
  • Cold Resistance: 0.0051 ohms
  • Typical Voltage Drop: 21.0 mV
  • Agency Ratings: Multiple including UL, CSA, VDE
  • Packaging: Cardboard carton (BK), Poly bag (BK1), Reel (TR2)
  • Option: Axial leads with copper tinned wire and nickel-plated brass endcaps

Buy the Buy Bussmann 5 x 20mm Fuses Part Number BK1S506400R Online

Purchase Bussmann time-delay fuse BK1S506400R today for high-quality overcurrent protection in electrical circuits. Designed with a 250VAC rating and a 0.4A current capacity, this fuse features a 5x20mm glass tube construction with nickel-plated brass endcaps. It conforms to IEC 60127-2/3 standards and carries UL, CSA, VDE, BSI, and other safety certifications. Ideal for use in electronic devices, power supplies, and industrial equipment, ensuring safety, durability, and reliable performance in demanding applications.

Get Bussmann BK1S506400R today—built for electrical circuit protection with reliable overcurrent delay features.

Frequently Asked Questions

Where can I buy Eaton Bussmann BK1S506400R?

You can click on the BUY or RFQ button to purchase BK1S506400R from an authorized Eaton Bussmann distributor.

How do I troubleshoot issues or seek technical support for part BK1S506400R?

You can download the BK1S506400R datasheet or visit the Eaton Bussmann website for support.

Who is the manufacturer of BK1S506400R?

Eaton Bussmann

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