SSR Solid State Relay 3-32VDC 6A DIN Rail DC to DC Module

SSR-41FDD/41FDA Slim Solid State Relay Module – 3-32VDC, 6A, DIN Rail Mount

Upgrade your automation and control projects with this compact Solid State Relay (SSR) Module. Designed for both DC-to-DC and DC-to-AC switching, this slim DIN Rail relay delivers non-contact, silent switching with outstanding durability and a wide voltage range — making it a versatile choice for industrial, DIY, and home automation applications.

Made in Mainland China.

Key Features

• Wide Voltage Range: Control voltage 3–32V DC; load voltage 5–60V DC or 24–250V AC — adaptable to a broad variety of circuits and applications.
• Compact Slim Design: Space-saving form factor engineered for DIN Rail mounting, keeping your control panel neat and organized.
• 6A Load Capacity: Handles up to 6A load current for dependable control of higher-power devices and equipment.
• Non-Contact SSR Technology: Solid State Relay design eliminates mechanical contacts, reducing wear and extending operational lifespan significantly.
• Versatile Signal Switching: Suitable for DC-to-DC and DC-to-AC signal relay configurations, covering a wide range of control scenarios.
• Easy Installation: Snap onto standard DIN Rail for quick, tool-free setup in any electrical enclosure or control cabinet.

Specifications

What Is a Solid State Relay?

Unlike traditional mechanical relays, a Solid State Relay (SSR) uses semiconductor components to switch electrical loads with zero moving parts. This means quieter operation, faster switching speeds, longer service life, and reduced electromagnetic interference — ideal for precision automation and sensitive electronics environments.

Who Is This For?

This SSR module is perfect for electricians, automation engineers, hobbyists, and makers who need a reliable, compact switching solution for PLCs, motor controls, temperature controllers, lighting systems, or custom DIY automation rigs.

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Frequently Asked Questions

Q: What is the difference between the SSR-41FDD and SSR-41FDA models?

A: The SSR-41FDD is a DC-to-DC solid state relay (both input and output are DC), while the SSR-41FDA is a DC-to-AC solid state relay (DC control input, AC load output). Both accept a 3–32V DC control signal. Choose FDD for DC load switching (5–60V DC) and FDA for AC load switching (24–250V AC).

Q: Can this SSR relay module be used with a PLC or microcontroller?

A: Yes! The 3–32V DC control input range is fully compatible with most PLC output signals, Arduino, Raspberry Pi, and other microcontrollers. Simply connect the control signal to the input terminals and wire your load to the output terminals on the DIN Rail mounted module.

Q: Is DIN Rail mounting the only option for this relay module?

A: This SSR module is designed specifically for standard DIN Rail mounting, making it ideal for installation inside electrical cabinets and control panels. The slim profile ensures it fits neatly alongside other DIN Rail components without taking up excessive space.

Q: Does this relay produce noise or sparks when switching?

A: No. Because this is a non-contact solid state relay, it uses semiconductor switching rather than mechanical contacts. This results in silent, spark-free operation and significantly less electromagnetic interference compared to traditional electromechanical relays.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.