Overview
The Athena Controls ZC-24-25-0 is a zero-voltage switched (ZVS) solid state contactor engineered for proportional and on-off control applications in temperature management and power regulation systems. This unit features a line voltage code of 24, indicating 120-240V AC operation, with a 3.6″ heatsink rated for 240 Vac. Built by Athena Controls, made in the United States, the ZC-24-25-0 delivers consistent performance across diverse industrial heating and process control applications.
Key Features
- Zero-Voltage Switching (ZVS): Zero voltage switched configuration minimizes electromagnetic interference and transient inrush current, extending load life and reducing nuisance tripping on sensitive circuits
- Compact Form Factor: 3.6″ heatsink mounted design allows flexible installation in cabinets and on Athena controller cases
- Soft-Start Capable: Soft-Start provides slow turn-on for high inrush loads, such as quartz lamps and tungsten elements
- Flexible Configuration: Compatible with Athena temperature controllers for coordinated loop control with alarm outputs
- Industrial Duty: Solid state design eliminates mechanical relay wear, increasing mean time between failures (MTBF)
Technical Specifications
| Parameter | Value |
| Model Number | ZC-24-25-0 |
| Product Type | Zero-Voltage Switched Solid State Contactor |
| Line Voltage | 120-240V AC |
| Frequency | 50/60 Hz |
| Switching Mode | Zero Voltage Switched (Z Code) |
| Heatsink Configuration | 3.6″ (25 Code) |
| Mounting Type | Free-standing or case-mounted (0 Code = free-standing) |
| Manufacturer | Athena Controls, Inc. |
| Origin | Made in USA |
| Certifications | FM Approved (per Athena standards) |
Typical Applications
The Athena Controls ZC-24-25-0 is designed for precise temperature control in various industrial settings. Common uses include:
- Electric heater element switching and proportional control
- Thermal chamber and oven temperature regulation
- Quartz lamp and tungsten filament load control with soft-start
- Process heating systems requiring low electromagnetic noise
- OEM equipment requiring compact power switching modules
- Integration with PLCs and HMIs for automated temperature management
Compatibility & Replacements
Compatible With
- Athena Series C temperature controllers (1ZC, 16C, 18C, 25C models)
- Athena Series 4000 analog temperature controllers
- Athena PC (Phase Angle Fired) solid state contactors for multi-unit arrays
- Industrial PLC systems with 4-20mA proportional control outputs
- Standard industrial 120-240V AC power distribution systems
- Resistive load applications (heaters, lamps, heating elements)
Replaces / Drop-In Replacement For
Verify specific model compatibility with your system integrator or Athena Controls sales engineer before ordering. Contact [email protected] for legacy model cross-reference data.
Works With
- Athena Control Platforms: Series C operators, legacy Series 16/18/19/25C controllers
- Communication Protocols: RS-232 and RS-485 networks for supervisory monitoring
- Output Configuration: Proportional (0-100% duty cycle), on-off, and staged multi-output control
- Integration Methods: 4-20mA analog command signals, relay logic coordination














