FOTEK SSR-10DA Solid State Relay 10A DC to AC Switching

FOTEK SSR-10DA Solid State Relay

The FOTEK SSR-10DA Solid State Relay is a reliable, high-performance switching component designed for industrial and DIY control applications. With a 10-amp load capacity and DC input to AC output control, this relay offers fast, silent switching with no mechanical wear — making it a smart choice for temperature controllers, automation systems, and electronic projects.

Unlike traditional electromechanical relays, solid state relays (SSRs) use semiconductor switching elements for longer operational life, reduced electromagnetic interference, and virtually noiseless operation. The SSR-10DA is compatible with a wide range of PLCs and microcontroller-based systems, including Arduino and Raspberry Pi setups.

Key Features

• Model: SSR-10DA (DC Input / AC Output)
• Load Current: 10A
• Control Input: DC 3–32V
• Output: AC 24–380V
• Silent, spark-free switching — no moving parts
• Compact plastic housing for easy panel or DIN rail mounting
• LED indicator for at-a-glance status monitoring
• Compatible with temperature controllers, PID controllers, and automation boards

Specifications

• Brand: FOTEK / Yangming
• Material: Plastic housing
• Type: Solid State Relay (SSR)
• Country of Origin: Made in Mainland China

Ideal For

• Industrial automation and process control
• DIY electronics and maker projects
• Temperature and PID controller integration
• 3D printer heated bed control
• Home automation systems

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For more information on electrical safety standards for relays and switching devices, refer to the U.S. Consumer Product Safety Commission (CPSC) and OSHA Electrical Safety Guidelines.

Frequently Asked Questions

Q: What does SSR-10DA mean on this solid state relay?

A: The "SSR" stands for Solid State Relay, "10" refers to the 10-amp maximum load current, "D" indicates DC control input (3–32V DC), and "A" means AC output (24–380V AC). This makes the SSR-10DA ideal for controlling AC-powered devices using a low-voltage DC signal from a microcontroller or PLC.

Q: Is this FOTEK SSR-10DA compatible with Arduino or Raspberry Pi?

A: Yes. The SSR-10DA accepts a DC control signal in the 3–32V range, which is fully compatible with the 3.3V and 5V output signals from Arduino, Raspberry Pi, and similar microcontroller boards. It's a popular choice for DIY automation and temperature control projects.

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

A: For continuous operation near its full 10A rated load, using a heat sink is recommended to maintain optimal performance and extend the component's service life. At lower loads, the relay may operate without additional cooling, but always verify thermal requirements for your specific application.

Q: What is the difference between a solid state relay and a mechanical relay?

A: A solid state relay (SSR) uses semiconductor components for switching instead of physical mechanical contacts. This results in silent, spark-free operation, longer lifespan, faster switching speeds, and reduced electromagnetic interference — all advantages over traditional electromechanical relays.