Overview
The Avatar Instruments D1P-24-20 is a solid-state proportional power controller designed for precise, variable output voltage control in industrial and commercial heating applications. This TRIAC-based unit operates on 120–240V AC power and delivers a maximum 20A load current, making it cost-effective for small to mid-scale heating systems. With its integrated 100K manual potentiometer, operators achieve infinitely variable power adjustment from 1–98% of the applied line voltage, eliminating the need for external control modules.
Key Features
- Proportional TRIAC control: Delivers 1–98% variable line voltage via phase-angle firing
- Manual 100K potentiometer: Smooth, infinitely adjustable output without external interfaces
- Dual voltage rated: Compatible with both 120V and 240V single-phase AC supplies
- Compact design: Panel-mount configuration for easy installation in control enclosures
- Constant resistance load optimized: Ideal for resistive heating elements, not suitable for inductive or high-inrush loads
Technical Specifications
- Part Number: D1P-24-20
- Manufacturer: Avatar Instruments
- Input Voltage: 120–240V AC, single-phase
- Supply Frequency: 50/60 Hz
- Output Current Rating: 20A maximum load
- Control Method: TRIAC phase-angle firing
- Control Input: 100K manual potentiometer
- Output Range: 1–98% of applied line voltage
- Load Type: Constant resistance (resistive heating only)
- Mounting: Panel mount
Typical Applications
The D1P-24-20 is well-suited for:
- Industrial electric heater control and power management
- Laboratory and bench-top heating systems
- Process heating with variable temperature control
- Thermal chamber and oven power regulation
- Commercial HVAC supplemental heating
Compatibility & Replacements
Compatible With
- Single-phase 120V AC power supplies
- Single-phase 240V AC power supplies
- Constant-resistance electric heaters and heating elements
- Standard electrical control enclosures with panel-mount provisions
- 50–60 Hz frequency AC power systems
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The D1P-24-20 is a legacy industrial power control component; direct replacements depend on your specific heater load, voltage, and control requirements.
Works With
- Manual potentiometer-based analog control systems
- Panel-mounted electrical enclosures
- Constant-voltage AC supplies (120–240V)
- Resistive heating loads (not suitable for transformers, motors, or tungsten lamps with high inrush current)
