Overview
The Athena 4000-B is a compact, 1/4 DIN panel-mounted temperature and process controller designed for reliable proportional control in industrial heating and process applications. This used unit features a 0–1000°F input range, dual-voltage 120/240VAC operation, and integrated relay output rated for 7 A at 120 V and 5 A at 240 V. The controller accepts thermocouple or RTD sensor input and provides a 3-digit filtered LED display for real-time temperature indication.
Key Features
- Proportional Control: Proportional band adjustment for stable, precise setpoint control
- Flexible Sensing: Compatible with thermocouple (K, J, E, T types) or 3-wire RTD inputs
- Digital Display: Filtered 3-digit LED readout with 1° or 0.1° settability
- Compact Panel Mount: 1/4 DIN short-case design fits standard panel cutouts (3.622 sq. in.)
- Field-Upgradeable: Optional plug-in PID module available for 3-mode control
- Output Options: Standard SPDT relay (Type B) or optional proportional current output, SCR/solid-state relay compatibility
Technical Specifications
| Parameter | Specification |
| Manufacturer | Athena Controls, Inc. |
| Model | 4000-B |
| Input Voltage | 120/240 VAC, 50/60 Hz |
| Output Rating (120 V) | 7 A (non-inductive load, max 840 W) |
| Output Rating (240 V) | 5 A (non-inductive load) |
| Maximum Inductive Load | 3 A @ 120 V, 1.5 A @ 240 V |
| Temperature Range | 0–1000°F (selectable input type) |
| Input Type | Thermocouple or RTD |
| Output Type | SPDT relay (Type B) |
| Display | 3-digit filtered LED |
| Panel Mounting | 1/4 DIN (front panel cutout 3.622 sq. in.) |
| Depth Behind Panel | 3.780 in. (92 mm) |
| Condition | Used |
Typical Applications
- Industrial heater and furnace control
- Polymer processing and molding temperature management
- Heat treating and annealing systems
- Laboratory and environmental chamber control
- Automotive and appliance manufacturing processes
- Semiconductor equipment support
Compatibility & Replacements
Compatible With
- Standard 120/240 VAC industrial power supplies
- Thermocouple sensors (K, J, E, T types)
- 3-wire RTD temperature probes
- Solid-state contactors and relay coils
- Heater elements rated up to 7 A @ 120 V or 5 A @ 240 V
- External SCR or solid-state relay power boosters
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 4000-B uses standard 1/4 DIN panel cutout dimensions and accepts common thermocouple and RTD inputs; however, exact model substitutes depend on your original output configuration (relay type, proportional current, or time-proportioning output).
Works With
- Athena optional plug-in PID module (field-installable 3-mode control card)
- Athena ZC/PC solid-state contactors (Series 19 and 39)
- Athena SCR power controllers for load capacity boost
- Standard electromechanical relays and contactors (for larger loads)
- Industrial heater controllers and furnace management systems
