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Littelfuse 3 A Resettable Fuse 60V Radial Lead RKEF300
Specifications
| Country of Origin | China |
|---|---|
| Voltage | 60V |
| Brand | Littelfuse |
| Height | 21.2mm |
| Length | 16.5mm |
| Model | RKEF300 |
| Width | 3mm |
| Current Rating | 40A |
| Series | RKEF |
| Maximum Operating Temperature | 60°C |
| Minimum Operating Temperature | -40°C |
| Trip Current | 6A |
| Power Dissipation | 3.2W |
| Standards/Approvals | UL, TUV, RoHS, CSA |
| Time to Trip | 19.8s |
| Hold Current | 3A |
| Minimum Resistance | 0.03Ω |
| Maximum Resistance | 80mΩ |
| Lead Orientation | Radial |
Key Features
- Automatically resets itself thousands of times for maintenance-free operation.
- Maintains protection by switching from low to high resistance during overload or short circuit.
- Compact radial lead design eliminates need for fuseholder and saves PCB space.
- UL, TUV, RoHS, and CSA compliant for global safety standards.
- Suitable for applications such as security systems, automotive, instrumentation, and power supplies.
- Power dissipation rated at 3.2 W to handle transient conditions effectively.
- Operating temperature range from -40°C to 60°C accommodates diverse environments.
- Minimum resistance of 0.03 Ω and maximum resistance of 80 mΩ ensures precise current limiting.
Product Description
Littelfuse RKEF300 is a 3 A resettable fuse rated at 60 volts with radial lead orientation, designed to protect electronic circuits from overcurrent conditions. Featuring rapid switching from a low resistance state to a high resistance state upon electrical overload or short circuit, this fuse provides reliable and maintenance-free circuit protection.
This device automatically resets thousands of times without replacement, making it ideal for use in security systems, automotive electronics, instrumentation, medical equipment, computers, and telecommunications devices. Compliance with UL, TUV, RoHS, and CSA standards confirms its suitability for industrial and commercial applications.
The fuse has a hold current rating of 3 A, a trip current rating of 6 A, and a current rating of 40 A, allowing it to protect sensitive circuits effectively. It dissipates power up to 3.2 watts and operates in temperatures ranging from -40°C to 60°C, which ensures performance stability in harsh conditions.
With dimensions of 16.5 mm length, 21.2 mm height, and 3 mm width, the fuse offers a small footprint appropriate for PCB mounting with radial leads. Its minimum electrical resistance is 0.03 ohms, and its maximum resistance is 80 milliohms, providing precise current limiting.
Automatically resets itself thousands of times for continued circuit protection. Maintenance-free design reduces downtime and servicing costs. Compact radial lead form factor for easy installation on printed circuit boards.
Complies with global safety standards, including UL, TUV, RoHS, and CSA. Protects a wide range of electronic systems such as power supplies, automotive controls, and communication devices. Power dissipation of 3.2 W enables handling of transient conditions safely.
Wide operational temperature range from -40°C to 60°C for various environments. Robust electrical characteristics with low resistance and precise trip times. Series RKEF for consistent performance and reliability.
China is the country of origin for this Littelfuse RKEF300 resettable fuse. Explore more Resettable Fuses and related electrical components at EnvMart for your industrial and commercial electronic protection needs.
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Frequently Asked Questions
The hold current rating of this model is 3 A, which indicates the maximum continuous current it can handle without tripping.
The trip current for this fuse is 6 A, meaning it will switch to a high resistance state when the current exceeds this value.
The maximum operating temperature for the RKEF300 is 60°C, allowing it to function effectively in various environments.
This model measures 16.5 mm in length, 21.2 mm in height, and 3 mm in width, making it suitable for PCB mounting.
The power dissipation rating for this fuse is 3.2 W, which helps it manage transient conditions effectively.
This fuse complies with UL, TUV, RoHS, and CSA standards, ensuring it meets global safety requirements.
The minimum resistance is 0.03 Ω and the maximum resistance is 80 mΩ, providing precise current limiting.
The operating temperature range for the RKEF300 is from -40°C to 60°C, accommodating diverse environmental conditions.
This model features a radial lead orientation, which simplifies installation on printed circuit boards.
This resettable fuse is suitable for applications such as security systems, automotive electronics, instrumentation, and power supplies.
The RKEF300 can automatically reset itself thousands of times without needing replacement, ensuring continuous circuit protection.
The current rating of this fuse is 40 A, allowing it to protect sensitive circuits effectively from overcurrent conditions.
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