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Littelfuse 3 A Resettable Fuse 72V Radial Lead PolySwitch RXEF Series RXEF300
Specifications
| Country of Origin | India |
|---|---|
| Voltage | 72V |
| Brand | Littelfuse |
| Height | 28.6mm |
| Length | 23.9mm |
| Model | RXEF300 |
| Width | 3mm |
| Current Rating | 40A |
| Series | RXEF |
| Maximum Operating Temperature | 60°C |
| Minimum Operating Temperature | -40°C |
| Trip Current | 6A |
| Power Dissipation | 2.8W |
| Standards/Approvals | UL, CSA, CQC, TUV, RoHS |
| Time to Trip | 19.8s |
| Hold Current | 3A |
| Minimum Resistance | 0.04Ω |
| Maximum Resistance | 100mΩ |
| Lead Orientation | Radial |
Key Features
- Automatically resets after fault conditions are cleared.
- Low hold current of 3A and trip current rating of 6A for precise protection.
- Operates reliably between -40°C and 60°C temperatures.
- Low resistance minimizes power loss with 0.04Ω min and 100mΩ max values.
- Power dissipation rated at 2.8W for thermal stability.
- Halogen-free and RoHS compliant with UL, CSA, CQC, and TUV certifications.
- Suitable for printers, industrial controls, motherboards, and telecom devices.
Product Description
Littelfuse RXEF300 is a high-quality 3 amp resettable fuse designed for circuit protection in electrical and electronic systems operating at up to 72 volts. It features a radial lead orientation and belongs to the PolySwitch RXEF series, known for its rapid switching from low resistance to high resistance states under fault conditions.
This device has a hold current of 3A and a trip current rating of 6A, with a fast time to trip of 19.8 seconds to protect sensitive circuits from overcurrent events. Its small size, measuring 23.9mm in length, 3mm in width, and 28.6mm in height, allows installation in compact PCB layouts.
The resettable fuse performs reliably over a wide temperature range from -40°C to 60°C and has low resistance values between 0.04Ω minimum and 100mΩ maximum, ensuring efficient circuit operation with minimal power loss. It dissipates 2.8 watts under operating conditions and complies with UL, CSA, CQC, TUV, and RoHS standards.
Typical applications include protection in printers, satellite video receivers, industrial controls, transformers, computer motherboards, modems, USB hubs and peripherals, gaming machines, telephony, audio-visual, and telecommunication devices. Its maintenance-free design automatically resets thousands of times without requiring fuse holder replacements.
This resettable fuse automatically resets itself after fault conditions are cleared. Maintains low resistance in normal operation for energy-efficient circuit protection. Compact and maintenance-free design eliminates need for fuse holders.
Compliant with major international standards ensuring quality and safety. Suitable for various industrial, laboratory, commercial, and electronic applications. Halogen-free construction adds environmental safety. Designed for fast and reliable protection against overcurrents and short circuits.
Explore comprehensive range of Resettable Fuses and circuit protection devices in the Electronics & Electricals category on EnvMart for reliable and certified industrial solutions.
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Frequently Asked Questions
The trip current rating of the RXEF300 fuse is 6A, which helps protect sensitive circuits from overcurrent events.
This model has a hold current of 3A, allowing it to operate efficiently under normal conditions before tripping at higher currents.
The maximum voltage rating for this resettable fuse is 72V, making it suitable for various electronic applications.
The dimensions of the RXEF300 are 23.9mm in length, 3mm in width, and 28.6mm in height, allowing for compact installation.
The RXEF300 operates reliably within a temperature range of -40°C to 60°C, suitable for diverse environments.
This resettable fuse has a power dissipation rating of 2.8W, contributing to its thermal stability during operation.
The RXEF300 is compliant with UL, CSA, CQC, TUV, and RoHS standards, ensuring quality and safety for users.
The RXEF300 fuse has a fast time to trip of 19.8 seconds, providing prompt protection against overcurrents.
The minimum resistance of this fuse is 0.04Ω, and the maximum resistance is 100mΩ, ensuring efficient circuit operation.
This resettable fuse is suitable for applications including printers, industrial controls, motherboards, and telecom devices.
The RXEF300 features a radial lead orientation, which facilitates its integration into compact PCB layouts.
The RXEF300 is manufactured in India, reflecting its origin in quality production standards.
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