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Eaton Bussmann BK1S5054R Time-Delay Ceramic Fuse

These are 5 x 20mm time-delay ceramic tube fuses with high breaking capacity, suitable for various electronic applications. They feature a ceramic tube, silver-plated endcaps, and optional axial leads with copper tinned wire and nickel-plated brass endcaps. Rated for 250V AC, with current ratings from 500mA to 10A, they are designed to meet IEC 60127-2 standards. The fuses have UL, CSA, VDE, and BSI certifications, with detailed electrical characteristics, such as pre-arching times, voltage drop, and interrupting ratings, ensuring reliability in circuit protection.

Authorized Distributors
Source:Newark
Part No:BK1-S505-4-R
Stock:1546
Inv Date:06-11-2026
Price: Unit price: $1.1
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Source:DigiKey
Part No:BK1-S505-4-R
Stock:546
Inv Date:06-11-2026
Price: Unit price: $1.42
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Source:DigiKey
Part No:BK1/S505-4-R
Stock:546
Inv Date:06-11-2026
Price: Unit price: $1.42
Buy/RFQ:
Part No:BK1/S505-4-R
Stock:1558
Inv Date:06-12-2026
Price: Unit price: $1.18
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Part No:BK1/S505-4-R
Stock:0
Inv Date:06-11-2026
Price: Unit price: $1.08
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Part No:BK1/S505-4-R
Stock:901
Inv Date:06-11-2026
Price: Unit price: $1.044
Buy/RFQ:
Part No:BK1/S505-4-R
Stock:901
Inv Date:06-11-2026
Price: Unit price: $1.044
Buy/RFQ:
Part No:BK1-S505-4-R
Stock:0
Inv Date:06-11-2026
Price: Unit price: $0.102
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Eaton Bussmann BK1S5054R Time-Delay Ceramic Fuse Specifications:

  • Dimensions: 5 x 20mm size, lead wire length 19.05mm
  • Voltage Rating: 250V AC
  • Current Ratings: 500mA to 10A
  • Construction: Ceramic tube with silver-plated endcaps, optional copper tinned wire leads
  • Breaking Capacity: High, with rated interrupting power
  • Materials: Nickel-plated brass endcaps, ceramic tube
  • Standards: IEC 60127-2, UL Recognized, CSA, VDE, BSI
  • Operating Temperature Range: Not specified (generally -55°C to +125°C)
  • Certifications: UL, CSA, VDE, BSI, SEMKO, IMQ, PES+JET, CCC, CQC, JET, KC
  • With optional sleeve: Flexible fluoropolymer (UL flammability W-1)

Buy the Cooper Bussmann Series 505 Time-Delay Ceramic Fuses: BK1S5054R

Secure your electronic safety with the Cooper Bussmann Series 505 ceramic fuses, offering high breaking capacity and reliable time-delay protection. Perfect for circuit protection in various electronic devices, these 5 x 20mm fuses feature ceramic tubes, silver-plated endcaps, and optional axial leads with copper-tinned wire. Rated at 250V AC and current ratings from 500mA to 10A, they meet IEC 60127-2 standards with multiple international certifications including UL, CSA, VDE, and BSI. Easy to install, robust, and designed for demanding environments, order now and safeguard your systems efficiently.

Order your Cooper Bussmann Series 505 BK1S5054R ceramic fuses today and ensure reliable circuit protection with high breaking capacity and UL certification.

Frequently Asked Questions

Where can I buy Eaton Bussmann BK1S5054R?

You can click on the BUY or RFQ button to purchase BK1S5054R from an authorized Eaton Bussmann distributor.

How do I troubleshoot issues or seek technical support for part BK1S5054R?

You can download the BK1S5054R datasheet or visit the Eaton Bussmann website for support.

Who is the manufacturer of BK1S5054R?

Eaton Bussmann

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