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Eaton Bussmann S50040R Fast Fuse

This is a fast-acting glass tube fuse designed for circuit protection with a voltage rating of 250 VAC and a current rating of 40 mA. It features a 5x20mm physical size, with silver-plated endcaps for current ratings of 32-125mA and nickel-plated endcaps for 160mA-10A. The fuse complies with IEC 60127-2 standards, providing reliable overcurrent protection in various electrical circuits. Suitable for use where fast response to overcurrent conditions is required, this fuse offers robust performance with UL, CSA, VDE, and other approvals. It comes with optional axial lead configurations and specialized packaging options.

Authorized Distributors
Source:DigiKey
Part No:S500-40-R
Stock:20
Inv Date:06-11-2026
Price: Unit price: $7.25
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Part No:S500-40-R
Stock:0
Inv Date:06-12-2026
Price: Unit price: $15.34
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Part No:S500-40-R
Stock:0
Inv Date:06-11-2026
Price: Unit price: $15.65
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Part No:S500-40-R
Stock:0
Inv Date:06-11-2026
Price: Unit price: $8.06
Buy/RFQ:
Part No:S500-40-R
Stock:0
Inv Date:06-11-2026
Price: Unit price: $8.06
Buy/RFQ:

Eaton Bussmann S50040R Fast Fuse Specifications:

  • Voltage Rating: 250 VAC
  • Current Rating: 40 mA
  • Physical Size: 5x20mm
  • End Cap Material: Silver-plated (32-125mA), Nickel-plated (160mA-10A)
  • Standards: IEC 60127-2
  • Approvals: UL, CSA, VDE, SEMKO, BSI, IMQ, CCC
  • Electrical Characteristics: Typical melting point around 3200°C, Cold Resistance: 0.000047 Ω at <10% rated current
  • Interrupting Rating: 35A at 250VAC

Buy the Cooper Bussmann Series 500 Fast-Acting Glass Tube Fuse: S50040R

Purchase the Cooper Bussmann S50040R fast-acting fuse online today to ensure dependable circuit safety. This fuse offers quick response to overcurrent conditions, featuring a 5x20mm size, 250VAC voltage rating, and 40mA current limit. Built to meet IEC 60127-2 standards, it boasts UL, CSA, VDE, and other certifications. Ideal for electronic circuitry and protection systems, this fuse includes options for axial leads and various packaging configurations, providing ease of installation and excellent reliability for all your electrical safeguarding needs.

Get Cooper Bussmann S50040R today—built for reliable overcurrent protection with fast response and durable construction.

Frequently Asked Questions

Where can I buy Eaton Bussmann S50040R?

You can click on the BUY or RFQ button to purchase S50040R from an authorized Eaton Bussmann distributor.

How do I troubleshoot issues or seek technical support for part S50040R?

You can download the S50040R datasheet or visit the Eaton Bussmann website for support.

Who is the manufacturer of S50040R?

Eaton Bussmann

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