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

HELTC SSR-41FDD/41FDA Solid State Relay – Slim DIN Rail Module

Meet the HELTC SSR-41FDD/41FDA Solid State Relay Module — a compact, non-contact switching solution built for demanding industrial and automation environments. With a wide control voltage range, high load capacity, and tool-free DIN rail installation, this slim relay delivers dependable performance in a space-saving form factor.

Key Features

• Wide Voltage Range: Control voltage of 3–32V DC; load voltage supports 5–60V DC or 24–250V AC — ideal for versatile AC and DC applications.
• Compact Slim Design: Low-profile module mounts directly on standard DIN rails, saving valuable panel space.
• 6A Load Capacity: Handles up to 6 amps, ensuring reliable control of higher-power loads and equipment.
• Solid State Technology: Non-contact switching via SSR technology means no mechanical wear, longer operational lifespan, and quieter operation compared to traditional electromechanical relays.
• Versatile Signal Compatibility: Available in DC-to-DC and DC-to-AC configurations (SSR-41FDD / SSR-41FDA) to suit a broad range of control scenarios.
• Easy Installation: Snap-on DIN rail mounting with clearly labeled terminals for fast, secure wiring.

Specifications

• Model: SSR-41FDD / SSR-41FDA
• Control Voltage (Input): 3–32V DC
• Load Voltage (Output): 5–60V DC / 24–250V AC
• Rated Load Current: 6A
• Switching Type: Non-contact (Solid State)
• Mounting: DIN Rail
• Brand: HELTC
• Made in: Mainland China

Package Contents

• 1 × SSR-41FDD or SSR-41FDA Solid State Relay Module

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

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For general guidance on electrical safety standards and best practices when working with relay modules and control circuits, visit the OSHA Electrical Safety Resource.

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, meaning it switches a DC load using a DC control signal. The SSR-41FDA is a DC-to-AC version, switching an AC load (24–250V AC) using a DC control signal (3–32V DC). Choose based on your load type.

Q: Can this solid state relay module be used with a Raspberry Pi or Arduino?

A: Yes! The 3–32V DC control voltage range is compatible with the 3.3V and 5V GPIO outputs of microcontrollers like Arduino and Raspberry Pi, making this relay an excellent choice for automation and DIY electronics projects.

Q: Does this relay require a heat sink?

A: For most standard loads under 6A, the slim module handles heat adequately in well-ventilated enclosures. For continuous high-current operation near the 6A rated maximum, installing a small heat sink or ensuring adequate airflow is recommended for optimal longevity.

Q: Is DIN rail mounting the only installation option?

A: The SSR-41FDD/41FDA is designed primarily for DIN rail mounting, which makes it ideal for use in electrical panels and control cabinets. Always ensure the mounting environment meets appropriate electrical safety standards.