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

SSR-41FDD/41FDA Slim Solid State Relay Module — DC to DC, 3–32VDC Input, 6A Load

Upgrade your automation and control projects with this compact SSR Slim Solid State Relay Module. Featuring true non-contact switching technology, this mini relay delivers quiet, reliable, and long-lasting performance — perfect for industrial panels, DIY electronics, home automation, and machine control applications.

Key Features

• Wide Voltage Range: Control input of 3–32V DC; load voltage supports 5–60V DC (SSR-41FDD) or 24–250V AC (SSR-41FDA), making it versatile across a broad range of applications.
• 6A Load Capacity: Handles up to 6 amps, giving you dependable control over higher-power loads without mechanical wear.
• Non-Contact Solid State Technology: No moving parts means virtually silent operation, faster switching speeds, and an extended service life compared to traditional mechanical relays.
• Slim, Space-Saving Design: The low-profile form factor is engineered for DIN Rail mounting, fitting neatly into control cabinets and electrical enclosures without wasting space.
• DIN Rail Compatible: Mounts quickly and securely to standard 35mm DIN rails — no extra hardware or drilling required.
• Versatile Signal Compatibility: Suitable for DC-to-DC and DC-to-AC control scenarios, making it adaptable for both signal switching and power load management.
• Durable Construction: Built for consistent performance in demanding environments, with robust components designed to withstand repeated switching cycles.

Specifications

• Model: SSR-41FDD (DC Load) / SSR-41FDA (AC Load)
• Control Input Voltage: 3–32V DC
• Load Voltage (DC): 5–60V DC (SSR-41FDD)
• Load Voltage (AC): 24–250V AC (SSR-41FDA)
• Max Load Current: 6A
• Mounting: 35mm DIN Rail
• Switch Type: Non-contact Solid State
• Country of Origin: Made in Mainland China

Package Contents

• 1 × SSR Slim Solid State Relay Module (SSR-41FDD or SSR-41FDA, as selected)

Note: Please allow for slight dimensional differences due to manual measurement. Actual product color may vary slightly from images depending on your display settings.

For guidance on electrical safety standards and best practices when working with relay modules and control circuits, refer to OSHA's Electrical Safety Resources.

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, supporting load voltages of 5–60V DC, ideal for controlling DC-powered devices. The SSR-41FDA is a DC-to-AC solid state relay, supporting load voltages of 24–250V AC, making it suitable for switching AC-powered equipment using a low-voltage DC control signal.

Q: What control voltage does this solid state relay module require?

A: This SSR module requires a control input voltage of 3–32V DC, making it compatible with a wide range of microcontrollers, PLCs, and other DC control signals including 3.3V, 5V, 12V, and 24V systems.

Q: How is this relay module mounted?

A: The relay features a standard 35mm DIN Rail mount, allowing for fast and tool-free installation inside electrical panels, control cabinets, or DIN rail enclosures. Its slim profile helps conserve space in crowded installations.

Q: Why choose a solid state relay over a mechanical relay?

A: Solid state relays (SSRs) use semiconductor components instead of mechanical contacts, resulting in silent operation, faster switching, no arcing, and a significantly longer service life. They are ideal for applications where frequent switching, low noise, or high reliability is required.