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Littelfuse 543478000 Overcurrent Protection Device

The LVR025S is a PolySwitch overcurrent protection device designed for electrical circuits, providing reliable overcurrent protection with a high current trip capacity. It features a cured, flame-retardant epoxy polymer insulating material, and 22 AWG Sn-plated copper leads for durability. Suitable for AC/DC applications up to 240 V, it is UL, CSA, TUV, and CQC recognized, RoHS compliant, and Pb-Free. This device automatically resets after fault conditions, preventing electrical hazards and ensuring system safety in various industrial applications.

Authorized Distributors
Source:Newark
Part No:543478-000
Stock:62
Inv Date:05-28-2026
Price: Unit price: $1.18
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Source:DigiKey
Part No:543478-000
Stock:3152
Inv Date:05-28-2026
Price: Unit price: $0.85
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Source:DigiKey
Part No:543478-000
Stock:0
Inv Date:05-28-2026
Price: Unit price: $0.55089
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Part No:543478-000
Stock:0
Inv Date:05-29-2026
Price: N/A
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Part No:543478-000
Stock:0
Inv Date:05-28-2026
Price: Unit price: $0.87
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Part No:543478-000
Stock:0
Inv Date:05-28-2026
Price: Unit price: $0.537
Buy/RFQ:
Part No:543478-000
Stock:0
Inv Date:05-28-2026
Price: Unit price: $0.537
Buy/RFQ:

Littelfuse 543478000 Overcurrent Protection Device Specifications:

  • Rated Operating Voltage at 20 C (AC/DC): 240 V
  • Maximum Interrupt Voltage / Current at 20 C (AC/DC): 265 V / 3.5 A, 135 V / 20.0A
  • Insulating Material: Cured, Flame Retardant Epoxy Polymer
  • Lead Material: 22 AWG Sn-Plated Copper (0.64 mm or 0.025 inches diameter)
  • Dimensions: Length varies between 9.6 mm (0.38 inch) and 17.4 mm (0.69 inch); width 4.3–5.8 mm (0.17–0.23 inch), height 7.6 mm (0.30 inch)
  • Operating Ratings: Hold current 0.25 A, trip current 0.56 A, resistance range 1.3Ω, power dissipation 3.8 W, trip time 21 sec
  • Agency Recognitions: UL, CSA, TUV, CQC, RoHS Compliant, Pb-Free

Buy the Tyco Electronics LVR025S – Reliable Overcurrent Protection for Industrial Applications

Purchase the Tyco Electronics LVR025S overcurrent protection device online today to ensure your electrical systems are safeguarded efficiently. With UL, CSA, TUV, and CQC recognition, this device offers reliable performance in industrial environments. Easy to install with 22 AWG Sn-plated copper leads and flame-retardant epoxy insulation, it provides automatic reset capabilities, reducing downtime while maintaining safety. Whether for hobbyist or professional applications, order now to secure fast delivery and get your circuits protected against overcurrent faults effectively.

Order your Tyco Electronics LVR025S series overcurrent protection device today and enhance your circuit safety with dependable high-current trip capabilities.

Frequently Asked Questions

Where can I buy Littelfuse 543478000?

You can click on the BUY or RFQ button to purchase 543478000 from an authorized Littelfuse distributor.

How do I troubleshoot issues or seek technical support for part 543478000?

You can download the 543478000 datasheet or visit the Littelfuse website for support.

Who is the manufacturer of 543478000?

Littelfuse

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