Overview
The Carlo Gavazzi RJ1A60A20U is a compact solid state relay engineered for general-purpose industrial automation and control. This semiconductor relay delivers 20A switching capacity at 660VAC operating voltage, making it suitable for a wide range of electrical load control applications. The relay features DIN rail mounting and screw terminals for secure integration into control panels.
Key Features
- 20A load current capacity with 660VAC maximum operating voltage
- Zero crossing switching mode for reduced EMI and noise
- 42VAC minimum operating voltage for wide input range compatibility
- DIN rail mounting standard for panel integration
- Screw terminal connections for secure wiring
- RoHS compliant construction
- Compact, space-saving design typical of the RJ1A mini series
Technical Specifications
Rated load current: 20A | Operating voltage range: 42–660VAC | Switching mode: Zero crossing | Mounting: DIN rail | Terminal type: Screw | Contact configuration: SPDT | Certifications: RoHS compliant
Typical Applications
- HVAC system control and load switching
- Pump and motor soft-start applications
- Heating element and resistive load control
- Industrial automation switching and relay replacement
- Panel-mounted general-purpose control circuits
- Retrofit installations requiring compact semiconductor relays
Compatibility & Replacements
Compatible With
- Standard 24VDC control circuits
- DIN rail mounted control panels
- Industrial PLC and automation controllers
- HVAC and building automation systems
- Standard industrial 660VAC three-phase and single-phase loads
Replaces / Drop-In Replacement For
- Carlo Gavazzi RJ1A60D20U (similar specification variant)
- Other RJ1A series 20A solid state relays
- Equivalent 20A, 660VAC semiconductor relays from competing manufacturers
Works With
- DIN rail mounted terminal blocks and components
- Standard industrial 660VAC three-phase power supplies
- 24VDC control voltage systems
- Zero crossing compatible control circuits
- Typical PLC analog and digital output modules




