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Eaton Bussmann BK1S5055R Ceramic Time-Delay Fuse

The BK1S5055R is a 5 x 20mm time-delay ceramic tube fuse offering high breaking capacity and reliable protection for electronic and electrical circuits. Crafted with ceramic tube and silver-plated endcaps, it features optional axial leads for easy integration and flexible sleeve options made of UL-flammability-rated fluoropolymer. Designed to meet IEC 60127-2 standards, this fuse provides consistent performance in overcurrent protection, with a minimum of 85 words. Suitable for various applications requiring a dependable, high-capacity fuse with precise specifications and UL, CSA, VDE certifications.

Authorized Distributors
Source:Newark
Part No:BK1-S505-5-R
Stock:1860
Inv Date:06-11-2026
Price: Unit price: $1.62
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Source:DigiKey
Part No:BK1-S505-5-R
Stock:362
Inv Date:06-11-2026
Price: Unit price: $1.74
Buy/RFQ:
Source:DigiKey
Part No:BK1/S505-5-R
Stock:362
Inv Date:06-11-2026
Price: Unit price: $1.74
Buy/RFQ:
Part No:BK1/S505-5-R
Stock:790
Inv Date:06-12-2026
Price: Unit price: $1.44
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Part No:BK1/S505-5-R
Stock:0
Inv Date:06-11-2026
Price: Unit price: $1.6
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Part No:BK1/S505-5-R
Stock:460
Inv Date:06-11-2026
Price: Unit price: $1.186
Buy/RFQ:
Part No:BK1/S505-5-R
Stock:460
Inv Date:06-11-2026
Price: Unit price: $1.186
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Part No:BK1-S505-5-R
Stock:0
Inv Date:06-11-2026
Price: Unit price: $0.0999
Buy/RFQ:
Part No:BK1/S505-5-R
Stock:0
Inv Date:06-11-2026
Price: Unit price: $0.775
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Eaton Bussmann BK1S5055R Ceramic Time-Delay Fuse Specifications:

  • Size: 5 x 20mm
  • Construction: Ceramic tube with silver-plated endcaps
  • Lead Diameter: 0.81mm
  • Lead Length: 19.05mm
  • Rated Voltage: 250V AC
  • Interrupting Capacity: 1500A
  • Ratings: 500mA to 10A
  • Compliance: IEC 60127-2, UL Recognized, CSA, VDE
  • Flammability: UL 94V-0 rated sleeve (optional)
  • Endcap Material: Nickel-plated brass
  • Optional leads: Axial copper tinned wire
  • Packaging: BK-100 (cardboard), BK1-1000 (poly bag), TR2 (tape and reel)

Buy the Cooper Bussmann Series 5x20mm Time-Delay Ceramic Fuse: BK1S5055R

Secure your electronic and electrical systems with the Cooper Bussmann Series ceramic time-delay fuse BK1S5055R. Crafted with high-quality ceramic and silver-plated endcaps, it provides reliable overcurrent protection with a high breaking capacity, meeting IEC 60127-2 standards. Its compact size of 5x20mm allows easy installation, while optional axial leads and UL-rated sleeves offer flexibility for various applications. Certified for safety by UL, CSA, and VDE, this fuse ensures dependable performance in sensitive and demanding environments. Purchase online today for trusted circuit protection designed to meet modern technical standards.

Order your Cooper Bussmann Series 5x20mm time-delay ceramic fuse BK1S5055R today and ensure your electronic circuits are protected with durable, high-capacity fuse technology.

Frequently Asked Questions

Where can I buy Eaton Bussmann BK1S5055R?

You can click on the BUY or RFQ button to purchase BK1S5055R from an authorized Eaton Bussmann distributor.

How do I troubleshoot issues or seek technical support for part BK1S5055R?

You can download the BK1S5055R datasheet or visit the Eaton Bussmann website for support.

Who is the manufacturer of BK1S5055R?

Eaton Bussmann

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