RKEF500 - Littelfuse Inc.

Manufacturer Part Number

RKEF500

Manufacturer

Littelfuse

Introduction

The RKEF500 is a resettable polymeric PTC (Positive Temperature Coefficient) fuse from Littelfuse's PolySwitch® series. It is designed to provide overcurrent and overtemperature protection for electronic circuits, helping to prevent damage from short circuits or overload conditions.

Product Features and Performance

Voltage rating up to 60V

Hold current of 5A, trip current of 10A, and maximum current of 40A

Time to trip of 28 seconds

Initial resistance of 12mOhms, post-trip resistance of 50mOhms

Operating temperature range of -40°C to 85°C

Product Advantages

Resettable design allows the device to automatically reset after the fault condition is removed

Compact and space-saving radial disc package

Provides reliable circuit protection against overcurrent and overtemperature events

Key Reasons to Choose This Product

Robust overcurrent and overtemperature protection for sensitive electronic components

Prevents costly damage and downtime due to short circuits or overload conditions

Automatic reset feature eliminates the need for manual intervention

Compact size and through-hole mounting for easy integration into electronic designs

Quality and Safety Features

Certified by CSA, TUV, and UL for safety and reliability

Designed and manufactured to high-quality standards to ensure consistent performance

Compatibility

This product is suitable for a wide range of electronic applications that require overcurrent and overtemperature protection, such as power supplies, motor controls, and industrial automation equipment.

Application Areas

Power supplies

Motor controls

Industrial automation

Electronic devices and equipment

Product Lifecycle

The RKEF500 is an active and currently available product. There are no known plans for discontinuation at this time. If you require information about equivalent or alternative models, please contact our website's sales team.