The HF105F-4/024D-1HSTF(257) is a miniature electromagnetic power relay manufactured by Hongfa. It is designed for various applications requiring reliable switching capabilities, particularly in automation, industrial control, and household appliances.

Applications

• Home appliances (e.g., air conditioners, refrigerators, washing machines)
• Industrial control systems
• Automation equipment
• Power supplies
• Uninterruptible Power Supplies (UPS)
• Renewable energy systems (e.g., solar inverters)
• Automotive applications

Features

• Miniature size
• High switching capacity
• Available in various coil voltages
• High insulation strength
• Long life expectancy
• RoHS compliant
• SPDT (Single Pole Double Throw) contact form

Benefits

• Space-saving design
• Reliable performance in demanding applications
• Versatile for different voltage requirements
• Safe operation due to high insulation
• Reduced maintenance costs
• Environmentally friendly
• Offers flexibility in circuit design

Additional Details

This relay typically features a coil voltage of 24VDC, indicated by '024D' in the part number. The '4' likely denotes the number of poles. The '1HSTF' likely refers to specific constructional details and terminal type, and the '(257)' could be a manufacturing or date code. It offers a specific contact rating determining the maximum current and voltage it can switch safely. The insulation resistance between the coil and contacts is high, preventing electrical breakdown. The operational and release times are quick, ensuring rapid switching. The relay is designed to withstand vibration and shock, making it suitable for harsh environments. It meets safety standards such as UL, VDE, and CQC, guaranteeing quality and safety.