Industrial ASR-75RA Variable Solid State Relay

Description:

The Variable Solid State Relay ASR-75RA is a 75A power control device with an integrated potentiometer designed for proportional control of resistive loads in industrial heating and power regulation applications. Commonly installed in electric heaters, ovens, packaging machinery, plastic processing equipment, and industrial temperature control systems where smooth, adjustable power output is required. Maintenance technicians, OEMs, and system integrators use this solid state relay for equipment repairs, replacement of electromechanical relays, and upgrades to improve switching reliability and control accuracy.

Applications:

The ASR-75RA Variable Solid State Relay is designed to provide adjustable power control for resistive loads using phase angle or zero-cross switching technology. It is commonly used in industrial ovens, electric heaters, drying equipment, heat sealing machines, and temperature control systems where operators can adjust output power through the built-in potentiometer. The solid state design offers silent operation, fast switching speeds, and extended service life compared to conventional electromechanical relays.

Technical Specifications:

• Manufacturer: Generic / Various Manufacturers
• Manufacturer Part Number (MPN): ASR-75RA
• Product Type: Variable Solid State Relay (SSR)
• Rated Current: 75 A
• Control Method: Integrated potentiometer adjustment
• Input Control: Manual variable resistance / potentiometer
• Load Type: Resistive loads
• Output Type: AC switching
• Rated Voltage: Typically 24-480 VAC depending on model revision
• Frequency: 50/60 Hz
• Isolation Method: Optical isolation
• Mounting Type: Panel mount
• Cooling Requirement: External heat sink recommended
• Protection Features: Overcurrent and overtemperature protection depending on installation
• Application: Power regulation and temperature control
• Compatible Equipment: Industrial heaters, ovens, heat sealers, and process equipment
• Operating Environment: Industrial indoor applications
• Designed for silent operation and long service life

Common Replacements:

• FOTEK TSR-75DA Solid State Relay
• Carlo Gavazzi RGC1A60 Series SSR
• Crydom D2450 Series Solid State Relay