FOTEK HPR-100AA 100A Solid State Relay – SSR AC Module

FOTEK HPR-100AA Solid State Relay – 100A High-Power SSR

The FOTEK HPR-100AA Solid State Relay is a robust, high-capacity 100-amp AC solid state relay designed for reliable switching in industrial automation, temperature control systems, heating equipment, and high-load electrical applications. Unlike mechanical relays, this SSR uses semiconductor technology for silent, spark-free operation with an extended service life and fast switching response — making it an ideal upgrade or replacement component for your control panel or DIY automation build.

Key Features

• 100A Load Capacity: Handles high-current AC loads suitable for industrial heating elements, motors, and power equipment.
• Solid State Design: No moving parts means near-silent operation, reduced wear, and longer service life compared to electromechanical relays.
• Fast, Precise Switching: Semiconductor-based switching enables rapid on/off cycles for PID temperature controllers and automation systems.
• Compatible with FOTEK / Yangming Systems: A direct-fit replacement or compatible part for FOTEK and Yangming HPR-100AA relay setups.
• Durable Plastic Housing: Sturdy construction designed to withstand demanding industrial environments.
• Compact Form Factor: Easy to mount in standard control panels or enclosures.

Typical Applications

• Industrial temperature control and PID controller circuits
• Heating element switching (ovens, kilns, extruders, 3D printers)
• Automation and machine control panels
• Motor control and power regulation systems
• DIY electronics and maker projects requiring high-power switching

Specifications

Why Choose a Solid State Relay?

Solid state relays offer significant advantages over traditional mechanical relays in high-cycle and high-power applications. Learn more about electrical safety standards from the U.S. Occupational Safety and Health Administration (OSHA) – Electrical Safety to ensure safe installation in your project or facility.

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Frequently Asked Questions

Q: What is the FOTEK HPR-100AA Solid State Relay used for?

A: The FOTEK HPR-100AA is a 100-amp AC solid state relay used for high-power load switching in applications such as industrial temperature controllers, heating elements (ovens, kilns, 3D printer beds), motor control, and automation panels. It provides fast, silent, and reliable switching without mechanical contacts.

Q: Is the HPR-100AA a direct replacement for FOTEK or Yangming relay systems?

A: Yes. This component is designed as a compatible replacement or spare part for FOTEK and Yangming HPR-100AA solid state relay configurations, making it suitable for maintenance, repair, or upgrade of existing installations.

Q: Does a solid state relay require a heat sink?

A: At high load currents (especially near the 100A rating), it is strongly recommended to mount your solid state relay on an appropriately rated aluminum heat sink to dissipate heat and ensure safe, reliable long-term operation. Always follow the manufacturer's installation guidelines.

Q: Where is this relay made?

A: This solid state relay is made in Mainland China.