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OptiFuse FMR400mA Micro Fuse

This fast-acting micro fuse features a round thermoplastic body with long radial leads for easy mounting, designed to meet UL/CSA standards. It has a 400mA current rating and a voltage rating of 250V, suitable for overcurrent protection in electronic circuits. The fuse utilizes a silver alloy element, copper alloy tin-plated pins, and has an interrupt rating of 50A at 250VAC. Its compact mechanical dimensions ensure reliable performance across various electronic devices while providing quick response to overcurrent conditions for safeguarding critical components.

Authorized Distributors
Part No:FMR-400mA
Stock:0
Inv Date:06-05-2026
Price: Unit price: $2.06
Buy/RFQ:
Part No:FMR-400MA
Stock:0
Inv Date:06-05-2026
Price: Unit price: $0.6423
Buy/RFQ:
Part No:FMR-400MA
Stock:0
Inv Date:06-05-2026
Price: Unit price: $0.6423
Buy/RFQ:

OptiFuse FMR400MA Micro Fuse Specifications:

  • Body Material: Thermoplastic UL94V0
  • Pin Material: Copper Alloy, Tin plated
  • Element: Silver Alloy
  • Voltage Rating: 250V
  • Interrupt Rating: 50A @ 250VAC
  • Rated Current: 400mA
  • Mechanical Dimensions: Length varies, typical diameter approximately 8.5mm, lead length approximately 20mm
  • Lead Type: Radial long leads for easy mounting
  • Operation Temperature Range: -55°C to +125°C
  • Compliance: UL and CSA standards
  • Chemical Resistance: Avoid contact with chemical solvents
  • Application: Overcurrent protection in electronic circuits

Buy the Optifuse Series Micro Fuse: FMR-400mA

Purchase the Optifuse FMR-400mA micro fuse online today. This fast-acting fuse is designed to protect your electronic circuits from overcurrent conditions effectively. Featuring a thermoplastic body, long radial leads, and UL/CSA compliance, it ensures quick response and reliable performance. Its compact size and high interrupt rating make it ideal for various electronic applications requiring dependable overcurrent protection. Order now to ensure your devices are safeguarded with an industry-leading, durable micro fuse designed for premium circuit safety and longevity.

Get Optifuse FMR-400mA micro fuse today—built for reliable circuit protection and long-lasting durability.

Frequently Asked Questions

Where can I buy OptiFuse FMR400MA?

You can click on the BUY or RFQ button to purchase FMR400MA from an authorized OptiFuse distributor.

How do I troubleshoot issues or seek technical support for part FMR400MA?

You can download the FMR400MA datasheet or visit the OptiFuse website for support.

Who is the manufacturer of FMR400MA?

OptiFuse

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