FOTEK SSR-P03DD DC to DC Solid State Relay Module

FOTEK SSR-P03DD DC to DC Solid State Relay

The FOTEK SSR-P03DD Solid State Relay is a high-quality DC-to-DC switching component designed for reliable, silent, and long-lasting control of electrical loads. Unlike traditional mechanical relays, this solid state relay features no moving parts — meaning faster switching speeds, zero contact wear, and minimal electromagnetic interference. It's an ideal choice for industrial automation, temperature controllers, DIY electronics projects, and maker boards.

Key Features

• DC to DC Control: Designed for low-voltage DC input controlling a DC output load — perfect for automation circuits and control panels.
• Solid State Design: No mechanical contacts means longer operational lifespan and silent switching.
• Compact & Durable: Rugged plastic housing suitable for panel mounting in control enclosures.
• Drop-in Replacement: Compatible with FOTEK and Yangming SSR-P03DD mounting footprints.
• Low EMI: Reduces electrical noise compared to electromechanical relays — ideal for sensitive electronics environments.

Specifications

• Type: Solid State Relay (SSR), DC to DC
• Model: SSR-P03DD
• Material: Plastic housing
• Compatible Brands: FOTEK, Yangming
• Country of Origin: Made in Mainland China

Who Is This For?

This solid state relay is a perfect fit for hobbyists, engineers, and technicians who need a dependable switching solution for DC loads. Whether you're building a custom temperature control system, automating machinery, or replacing a worn-out relay in an existing setup, the SSR-P03DD delivers consistent, repeatable performance.

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Helpful Resources

For guidance on safe electrical component installation and best practices, refer to OSHA's Electrical Safety Guidelines.

Frequently Asked Questions

Q: What does the FOTEK SSR-P03DD solid state relay do?

A: The SSR-P03DD is a DC-to-DC solid state relay that uses semiconductor switching (no moving parts) to control a DC output circuit using a low-voltage DC input signal. It is commonly used in industrial automation, temperature control systems, and DIY electronics projects.

Q: Is this a direct replacement for the original FOTEK or Yangming SSR-P03DD?

A: Yes. This part is designed to be compatible with FOTEK and Yangming SSR-P03DD mounting footprints and specifications, making it a reliable drop-in replacement for existing installations.

Q: What are the advantages of a solid state relay over a mechanical relay?

A: Solid state relays have no mechanical contacts, which means they switch silently, last longer, operate faster, and produce significantly less electromagnetic interference (EMI) compared to traditional mechanical relays — making them ideal for sensitive or high-cycle applications.

Q: Where is this product made?

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