SSR-41FDD 41FDA Compact Solid State Relay DC 6A DIN Rail

SSR-41FDD / 41FDA Compact Solid State Relay — DC 6A Mini Module

Upgrade your control systems with the SSR-41FDD / SSR-41FDA Compact Solid State Relay — a high-performance, non-contact switching module engineered for reliable DC signal control. With a 6A load handling capacity and a space-saving form factor designed for DIN rail mounting, this mini relay module is the dependable choice for automation, industrial control panels, DIY electronics projects, and more.

Key Features

• Non-Contact SSR Technology: Solid State Relay (SSR) design eliminates mechanical contacts, resulting in faster switching, silent operation, and greatly extended service life compared to traditional electromechanical relays.
• 6A DC Load Capacity: Handles up to 6A of DC load current, making it suitable for a wide range of low-to-medium power control applications.
• Versatile Signal Compatibility: Supports DC-to-DC and DC-to-AC signal switching — ideal for various automation and control scenarios requiring flexible input/output configurations.
• DIN Rail Compatible: Compact design mounts securely onto standard DIN rails, keeping your control panel tidy and professional.
• 3–32 VDC Input Control: Wide input voltage range (3–32 VDC) ensures compatibility with most microcontrollers, PLCs, and low-voltage control circuits.
• Mini Compact Form Factor: Takes up minimal panel space while delivering full relay functionality — a smart solution for both new builds and retrofits.
• 2 Size/Configuration Options: Available in 2 variants to suit your specific wiring and installation requirements.
• Durable & Long-Lasting: SSR technology means no sparking, no arcing, and no mechanical wear — built to last through thousands of switching cycles.

Specifications

• Model: SSR-41FDD / SSR-41FDA
• Load Current: 6A DC
• Control Input Voltage: 3–32 VDC
• Switching Type: Non-contact (Solid State)
• Mounting: DIN Rail compatible
• Configuration Options: 2 variants available

Ideal Applications

• Industrial automation & control panels
• PLC and microcontroller output switching
• DIY electronics and home automation projects
• Motor control, solenoid switching, and LED driver circuits
• HVAC and building management systems

For more information on electrical safety standards for relay and control modules, visit OSHA Electrical Safety Guidelines.

Frequently Asked Questions

Q: What is the SSR-41FDD / SSR-41FDA Compact Solid State Relay and what does it do?

A: The SSR-41FDD and SSR-41FDA are compact, non-contact Solid State Relays (SSR) with a 6A DC load rating. Unlike traditional mechanical relays, SSR modules use semiconductor components to switch circuits silently and without physical contact, offering superior durability, faster response times, and virtually zero maintenance. They are designed for DIN rail mounting and are compatible with 3–32 VDC control signals.

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

A: The SSR-41FDD is configured for DC-to-DC switching, while the SSR-41FDA is designed for DC-to-AC signal relay applications. Both share the same compact DIN rail form factor and 6A load capacity, so you can choose the variant that matches your specific output load requirements — DC loads for the FDD version, or AC loads for the FDA version.

Q: What control voltage is required to operate this solid state relay module?

A: This relay module accepts a wide control input voltage range of 3–32 VDC, making it compatible with common microcontrollers (such as Arduino or Raspberry Pi operating at 3.3V or 5V), PLCs, and other low-voltage DC control sources right out of the box — no additional signal conditioning required in most cases.

Q: How is this solid state relay mounted and installed?

A: The SSR-41FDD / SSR-41FDA features a DIN rail-compatible design, allowing it to clip securely onto standard 35mm DIN rails commonly found in electrical enclosures and control panels. Its compact, mini form factor minimizes panel space usage while keeping wiring organized and accessible.