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Eaton Bussmann BK1S505500R Time-Delay Ceramic Fuses

The 5 x 20mm Fuses from the $505 Series are high breaking capacity, time-delay ceramic tube fuses designed for reliable overload protection in electronic and industrial applications. They feature ceramic tubes with silver-plated endcaps or nickel-plated brass endcaps, with optional axial leads or flexible fluoropolymer sleeves. These fuses meet IEC 60127-2 standards, with ratings from 500mA to 12A, and are recognized by multiple safety agencies including UL, CSA, VDE, and others, ensuring compliance and safety in diverse environments.

Authorized Distributors
Source:Newark
Part No:BK1-S505-500-R
Stock:114
Inv Date:06-11-2026
Price: Unit price: $1.68
Buy/RFQ:
Source:DigiKey
Part No:BK1-S505-500-R
Stock:455
Inv Date:06-11-2026
Price: Unit price: $1.81
Buy/RFQ:
Source:DigiKey
Part No:BK1/S505-500-R
Stock:455
Inv Date:06-11-2026
Price: Unit price: $1.81
Buy/RFQ:
Part No:BK1/S505-500-R
Stock:0
Inv Date:06-12-2026
Price: Unit price: $1.51
Buy/RFQ:
Part No:BK1/S505-500-R
Stock:0
Inv Date:06-12-2026
Price: Unit price: $1.142
Buy/RFQ:
Part No:BK1/S505-500-R
Stock:0
Inv Date:06-12-2026
Price: Unit price: $1.142
Buy/RFQ:

Eaton Bussmann BK1S505500R Time-Delay Ceramic Fuses Specifications:

  • Physical Size: 5 x 20mm
  • Current Ratings: 500mA to 12A
  • Voltage Rating: 250 Vac
  • Breaking Capacity: 1500A
  • Resistance: Varies with current (e.g., 0.0131-0.5070 ohms)
  • Pre-Arching Time: 71.3ms at 250 Vac, 16-36.6Ω resistances
  • Construction: Ceramic tube with silver-plated or nickel-plated brass endcaps
  • Optional Features: Axial leads, flexible fluoropolymer sleeve
  • Agency Approvals: UL, CSA, VDE, SEMKO, BSI, IMQ, PESWET, CCC, EK, FIMKO
  • Packaging Types: BK (carton), BK1i (poly bag), TR2 (tape reel with 19.05mm lead wire)
  • Standards: IEC 60127-2, with extension up to 12A
  • Additional: Time-delay characteristic, high breaking capacity

Buy the Cooper Bussmann 505 Series U+2013 Reliable Time-Delay Fuses for Industrial Applications

Purchase your Cooper Bussmann Series 505 time-delay ceramic fuses online today to secure dependable overload protection in electronic circuits and industrial equipment. Designed for high safety standards, these fuses feature ceramic tubes with optional axial leads or fluoropolymer sleeves for flexible installation. With ratings from 500mA to 12A and certifications from UL, CSA, VDE, and others, they guarantee reliability and compliance. Enhance your project’s safety and performance by ordering these high-quality fuses now with quick delivery and trusted quality assurance.

Order your Cooper Bussmann Series 505 ceramic fuses today and ensure reliable overload protection for your electronic and industrial projects.

Frequently Asked Questions

Where can I buy Eaton Bussmann BK1S505500R?

You can click on the BUY or RFQ button to purchase BK1S505500R from an authorized Eaton Bussmann distributor.

How do I troubleshoot issues or seek technical support for part BK1S505500R?

You can download the BK1S505500R datasheet or visit the Eaton Bussmann website for support.

Who is the manufacturer of BK1S505500R?

Eaton Bussmann

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