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Littelfuse PSR031FS0400Z High-Speed Semiconductor Fuse

Littelfuse PSR Series High-Speed Square Body Fuses provide reliable circuit protection for power semiconductor devices such as IGBTs, diodes, SCRs, and MOSFETs, used in power conversion, soft starters, UPS, and inverter systems. Engineered for fast response with high current limiting, these fuses feature ceramic bodies, plated brass contacts, and a flush end mount design. Certified under UL, IEC, and CCC standards, they ensure safety and performance in heavy industrial environments including power, processing, and electric vehicle applications, with options for microswitch indicators and various current ratings.

Authorized Distributors
Source:DigiKey
Part No:PSR031FS0400Z
Stock:1
Inv Date:05-28-2026
Price: Unit price: $275.28
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Part No:PSR031FS0400Z
Stock:0
Inv Date:05-29-2026
Price: Unit price: $275.21
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Part No:PSR031FS0400Z
Stock:0
Inv Date:05-28-2026
Price: Unit price: $619.16
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Part No:PSR031FS0400Z
Stock:0
Inv Date:05-28-2026
Price: Unit price: $619.16
Buy/RFQ:
Part No:PSR031FS0400Z
Stock:0
Inv Date:05-28-2026
Price: Unit price: $210.06
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Littelfuse PSR031FS0400Z High-Speed Semiconductor Fuse Specifications:

  • Voltage Range AC: 550 V - 1300 V
  • DC: 500 V - 1000 V
  • Amperage Range: 40A-2000A
  • Interrupting Range AC: 100 kA - 200 kA
  • DC: 150 kA
  • Time Constant: 10ms
  • Material Body: Ceramic
  • Contacts: Plated Brass
  • Mounting Style: Flush-End
  • Operating Temperature: -55°C to +125°C
  • Certifications: UL 248-13 Recognized, cURus, IEC 60269-4, RoHS, REACH
  • Stud Sizes: M8x1.25, M10x1.5, M12x1.75
  • Recommended Torque: 13.5 Nm to 45 Nm depending on size

Buy the Littelfuse PSR – Reliable Semiconductor Fuses for Industrial Applications

Purchase Littelfuse PSR high-speed square body fuses online today to ensure reliable protection in power conversion, industrial drive systems, and electric vehicle charging stations. Engineered for fast response with high current limiting, these ceramic-body fuses meet global certifications, providing exceptional safety, durability, and performance. Available in various current ratings and sizes, they feature visual indicators and micro switch options for easy maintenance, making them perfect for demanding industrial environments such as heavy industry, power systems, and processing facilities. Buy now for trusted quality and enhanced system protection.

Get Littelfuse PSR series high-speed fuses today—built for precision and long-lasting durability in power electronics and heavy-duty systems.

Frequently Asked Questions

Where can I buy Littelfuse PSR031FS0400Z?

You can click on the BUY or RFQ button to purchase PSR031FS0400Z from an authorized Littelfuse distributor.

How do I troubleshoot issues or seek technical support for part PSR031FS0400Z?

You can download the PSR031FS0400Z datasheet or visit the Littelfuse website for support.

Who is the manufacturer of PSR031FS0400Z?

Littelfuse

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