Overview
The Phoenix Contact ELR 1-24DC/600AC-20 (Part No. 2297138) is a single-phase solid-state contactor designed for reliable, wear-free power switching in industrial control systems. With 24 V DC control voltage and 20 A output capacity, this component delivers contactless performance ideal for demanding automation environments where mechanical relay fatigue and arcing are concerns.
Key Features
- Zero-voltage switching: Minimizes surge currents and electrical stress on connected equipment
- Solid-state design: No moving contacts—eliminates wear, noise, and maintenance burden
- 24 V DC control input: Compatible with standard automation control panels and PLC outputs
- 20 A rated output: Suitable for single-phase AC motor drives and industrial loads up to 600V AC
- Compact form factor: Fits standard DIN rail mounting and control enclosures
Technical Specifications
- Control voltage: 4–32 V DC (typical 24 V)
- Output current (AC51): 20 A at 600 V AC
- Switching capacity (AC53A): 5 A at 600 V AC
- Switching function: Zero-voltage switch
- Connection type: Screw terminals
- Weight: 230 g
- Manufacturer: Phoenix Contact
Typical Applications
- HVAC and ventilation control systems
- Industrial chiller and refrigeration units
- Motor soft-start and contactor replacement circuits
- Process heating and temperature control
- Automated production line switching
- Building automation and facility management systems
Compatibility & Replacements
Compatible With
- PLC analog/digital outputs (24 V DC logic)
- Industrial control panels and control relays
- Standard DIN rail 35 mm rail mounting systems
- AC power supplies and UPS systems (24 V DC output)
- Single-phase AC motor drives and loads
Replaces / Drop-In Replacement For
- Phoenix Contact ELR 1-SC-24DC/600AC-20 (alternate part number 1032919)
- Mechanical contactors and electromechanical relays in 20 A 24V DC control circuits
- Worn or fatigued solid-state relays with similar voltage/current ratings
Works With
- Allen-Bradley and Rockwell Automation control systems
- Siemens S7 and TIA Portal automation
- Mitsubishi and Omron PLC platforms
- Standard 24 V DC industrial control bus
- EtherNet/IP and PROFIBUS networked control environments
