DIN-Rail Solid State Relay – Single-Phase DC-AC / AC-AC / DC-DC Switching

Electrical Specifications

• Switching Type: Single-phase solid state relay

• Control / Load Combinations: DC-AC, AC-AC, DC-DC (model dependent)

• Contact Load: Low-power control circuit

• Switching Principle: Solid state (semiconductor-based)

• Intended Use: General-purpose industrial control

Electrical Disclaimer:
Rated voltages and currents represent maximum device limits under ideal test conditions. Actual allowable load depends on load type, duty cycle, ambient temperature, and cooling effectiveness. Derating is mandatory in all real-world installations.

Control Mode Selection

Available Control Modes:

• DA – DC Control → AC Load

  • Control Input: DC 3–32V

  • Load Voltage: AC 24–480V

• AA – AC Control → AC Load

  • Control Input: AC 70–280V

  • Load Voltage: AC 24–480V

• DD – DC Control → DC Load

  • Control Input: DC 3–32V

  • Load Voltage: DC 5–75V

Selection Disclaimer:
Incorrect control or load selection may result in malfunction or permanent device damage. Control signal type and load voltage must be confirmed prior to installation.

Current Rating & Load Derating Guidelines

Recommended SSR Sizing Ratios:

• Resistive Loads

  • SSR current ≥ 3 × load operating current

  • Examples: heaters, ovens, resistance furnaces, incandescent lamps, heating elements

• Inductive Loads

  • SSR current ≥ 6 × load operating current

  • Examples: motors, fans, pumps, transformers, air conditioners

• Capacitive Loads

  • SSR current ≥ 10 × load operating current

  • Examples: capacitors, battery charging circuits

Current Disclaimer:
Failure to apply appropriate derating may cause overheating, premature failure, or unsafe operation. Inrush current must always be considered.

Thermal Management Requirements

• Mounting Method: DIN-rail (relay body)

• Cooling Requirement: External heat sink required

• Heat Sink Operating Temperature:

  • Must remain below 80 °C during operation

• Thermal Interface:

  • Heat-conductive silicone grease required between relay base and heat sink

Thermal Disclaimer:
Solid state relays continuously dissipate heat. Inadequate heat sinking or airflow may result in thermal runaway and device failure. Forced ventilation may be required for higher current applications.

Operational & Protection Notes

• Minimum Test Load:

  • SSR must not be tested without load

  • Minimum recommended test load: >50 W

• Short-Circuit Protection:

  • External fast-acting fuse required

  • Recommended fuse rating: ~70% of SSR rated current

• Switching Type:

  • Zero-cross switching (default)

  • Random turn-on available by custom order

Protection Disclaimer:
SSR characteristics do not replace external protection devices. Proper fusing, isolation, and system-level safety measures remain mandatory.

Mechanical & Environmental Specifications

• Mounting Style: DIN-rail mounted

• Housing Type: Sealed construction

• Moving Parts: None

• Intended Installation: Electrical control panels or enclosures

Compliance & Safety

• Certification: CE marked (manufacturer declaration)

• Hazardous Substances: No high-concern chemicals declared

• Country of Origin: Mainland China

• Customisation: Manufacturer-configurable variants available

Compliance Disclaimer:
CE marking applies to the relay as a component only. Final system compliance—including electrical safety, EMC, and installation standards—is the responsibility of the system designer or installer. ProSense does not certify complete systems or site installations.

Installation & Use Limitations

• Not safety-rated

• Not suitable as a primary isolation or emergency stop device

• External over-current, short-circuit, and thermal protection is required

• Installation must be performed by qualified electrical personnel

Installation Disclaimer:
This product is supplied as an industrial control component. Incorrect selection, wiring, or thermal design may result in unsafe operation or equipment damage. Suitability must be independently verified prior to installation.

• PLC and automation output switching

• Heater and resistive load control

• Motor and inductive load control (with correct derating)

• OEM machinery and control panels

• General industrial electromechanical control