Overview
The Phoenix Contact ELR 1-24DC/600AC-20 is a single-phase solid-state contactor designed for precise, silent switching in AC electrical systems. With an input voltage of 24 V DC, output current of 20 A, and zero voltage switch functionality, it eliminates mechanical contact arcing and provides wear-free performance in demanding industrial environments.
Key Features
- Zero-voltage switching for smooth, controlled power transfer without voltage spikes
- Solid-state design eliminates mechanical wear and audible noise in continuous-duty applications
- Fast, contactless switching suitable for HVAC, process control, and automation systems
- Compact package with 230 g weight for space-constrained control panels
- AC load rating of 600 V output with dual capacity ratings (20 A primary, 5 A secondary)
Technical Specifications
Electrical Ratings:
- Input Control Voltage: 24 V DC
- Output Load Current (AC51): 20 A @ 600 V~
- Output Load Current (AC53): 5 A @ 600 V~
- Control Voltage Range: 4–32 V DC
- Output Voltage: 600 V AC
- Switching Type: Zero-voltage switch
Typical Applications
- HVAC Systems: Fan and compressor control in commercial ventilation, air-conditioning, and heat pump installations where silent, smooth starting is essential.
- Process Automation: Pump and motor control in industrial manufacturing, food processing, and chemical handling requiring precise load switching.
- Refrigeration & Chillers: Protection from contact arcing and wear under heavy starting currents typical in compressor duty cycles.
- Control Panels: Backup relay or motor-starter contactor in modernized industrial control systems transitioning from electromechanical to solid-state switching.
Compatibility & Replacements
Compatible With
- 24 V DC industrial control systems and PLC-based automation platforms
- AC motor loads rated for 600 V, 50/60 Hz operation
- Standard DIN-rail or panel-mount control enclosures
- Industrial power distribution systems using AC51 and AC53 load classifications
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The Phoenix Contact ELR 1-24DC/600AC-20 is suitable as a replacement for electromechanical contactors operating under the same voltage and current ratings in AC motor control applications.
Works With
- Standard 24 V DC control circuits (relay, PLC, or discrete logic outputs)
- AC 50/60 Hz motor loads and heating/cooling elements
- Zero-voltage switching control systems in automation and HVAC platforms
- Industrial control software compatible with discrete output relays (Studio 5000, TIA Portal, etc.)
