DIN Rail mount Solid state Relay

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FL-SSR Catalog

 

What is a DIN Rail Mounting System?

The DIN rail is a standard metal rail used for mounting various industrial control equipment like power supplies, circuit breakers, and programmable logic controllers (PLCs). The name "DIN" comes from the German Institute for Standardization (Deutsches Institut für Normung). The most common type is the 35 mm wide "top hat" rail (TS35) conforming to the IEC/EN 60715 standard. This system allows modules from different vendors to be mounted side-by-side in a flexible, organized, and accessible manner.

• What are the advantages of using a DIN rail mount SSR?
  The main advantage is modularity and flexibility. They are designed for easy installation and neat organization within industrial control panels, allowing for simple side-by-side mounting of different devices. The design also often supports straightforward wiring and provides good physical protection.

• What key specifications should I look for?
  When selecting a DIN rail mount SSR, you should pay close attention to the following parameters, which can typically be found on the product's datasheet:

  • Load Current Rating: The maximum AC or DC current the output can switch (e.g., 10A, 25A, 60A).

  • Load Voltage Rating: The voltage of the load being controlled (e.g., 48-600V AC, 1-200V DC).

  • Control Voltage: The voltage required to activate the relay (e.g., 4-32V DC, 90-280V AC/DC).

  • Output Type: AC outputs are often "zero-cross" for reducing inrush current, while DC outputs are "random" or "instant-on".

• Are there any special installation considerations?
  Yes, thermal management is critical. The maximum current rating often depends on the ambient temperature and installation conditions. For example, a relay might be rated for 35A at 40°C, but this value decreases as the ambient temperature rises. Some higher-power models come with an integrated fan to help with heat dissipation. Also, when multiple relays are mounted close together ("close-gapping"), their current-carrying capacity may be reduced, a factor known as "derating".

• What are some typical applications?
  DIN rail mount SSRs are versatile and are commonly used in:

  • Industrial Ovens & Heaters

  • Plastic Injection Molding Equipment

  • Motor Control (Pumps, Conveyors)

  • Professional Cooking Equipment

  • Lighting Control Systems

  • HVAC&R Systems