🧲 What Is an Intermediate Relay?

In the world of industrial automation, the Intermediate Relay—also known as an interface relay or signal relay—is not just a component, but a critical link between control logic and execution. Whether you are integrating a PLC with field devices or isolating signals in a multi-voltage control panel, intermediate relays are the smart, cost-effective solution that engineers rely on.

💡 What Is an Intermediate Relay?

An Intermediate Relay is a type of electromechanical relay designed primarily for signal amplification, isolation, and transmission between low-power control signals and high-power loads. Unlike power relays that directly drive motors or heaters, intermediate relays are used in-between controllers and actuators—hence the name.

(RX Series Relay & Socket)

🧩 Basic Structure

Most intermediate relays from RY-ELE include:

• Electromagnetic coil (DC or AC operated)

• One or more switching contact groups (NO/NC)

• Optional LED indicators, test buttons, freewheeling diodes

• Plug-in or PCB pin-out design

• DIN-rail mountable sockets for easy integration

🗂 Product Classification

To help meet diverse automation scenarios, RY-ELE offers a comprehensive range of intermediate relays:

🔸 Standard Dual-Contact Intermediate Relays

• RXS2C Series & XS2C Series
  ➤ 2 changeover contacts (2NO+2NC)
  ➤ 10A/7A contact load
  ➤ LED indicator, test button, diode optional
  ➤ Models: RXS2C-D24L, RXS2C-A220L

🔸 Narrow-Type Space-Saving Relays

• RX1CO/2CO Series RY1S/2S Series
  ➤ Ultra-slim design
  ➤ Same contact capacity with reduced footprint
  ➤ Perfect for dense control cabinets

🔸 Multi-Pole Interface Relays

• RXS3C Series (3NO+3NC)
  ➤ 7A rated current
  ➤ Compact but multi-contact
  ➤ Ideal for signal distribution & interlocking systems
  ➤ Models: RXS3C-D24L, RXS3C-A220L

• RXS4C Series
  ➤ 4-pole conversion, supports complex logic circuits
  ➤ For control loops with multiple redundancy/safety levels

🔸 High-Reliability Industrial Relays

• RYER2N Series
  ➤ 2-pole changeover, with built-in LED & test button
  ➤ Mechanical life > 20 million cycles
  ➤ Models: RYER2N-D24L, RYER2N-A220L

🛠 Application Scenarios

• ✔️ PLC Output Isolation

• ✔️ Signal Transmission in Control Panels

• ✔️ Alarm Triggering

• ✔️ Low-Voltage to High-Voltage Conversion

• ✔️ Multi-point Parallel Outputs

• ✔️ Safe Control in HVAC, packaging, elevators, CNC systems, etc.

📈 Why Choose RY-ELE Intermediate Relays?

✅ Certified Reliability – RoHS, CE,  ISO9001, ISO14001
✅ Customization Available – LED, gold-plated contacts, test button, diode
✅ Compact Design – From slim 6mm to 4-pole multi-contact relays
✅ Flexible Matching Bases – Snap-in socket mounting, rail or screw terminals
✅ One-stop Sourcing – Matching sockets, modules, accessories in one system