VAC2-15E | 15A Single Phase Fan Speed Controller | 4kW 230V

Single Phase Fan Controller – VAC2-15E, 15A, 4kW, 230V

The VAC2-15E 15A 230V Fan Controller is a robust and compact enclosed variable phase-angle regulator designed for precise control of single-phase mains-driven inductive loads. With a maximum rated supply of 230V AC and up to 15A on-state current, it is ideal for controlling induction motors, fans and pumps in HVAC and industrial applications.

The controller provides an infinitely variable output from 0–98%, allowing users to adjust motor speed and airflow accurately. An integrated RC snubber improves performance with inductive loads, while the large TRIAC provides enhanced protection against high inrush currents. A rear-mounted minimum speed adjuster helps prevent motors from operating below their reliable running speed.

 Important: For 15A operation, the controller must be mounted to a suitable heatsink or panel rated at 2°C/W or better. Heatsink paste is essential between the controller and heatsink to ensure effective thermal bonding.

The package includes the controller, control knob, label, and printed datasheet.

Key Features:

• Variable 0-98% Output: Allows precise control.
• Minimum Set Speed Adjuster: Tailor minimum output to optimise motor speeds.
• High Inrush Current Handling: Triac design for industrial reliability.
• RC Snubber Network: Stabilises inductive loads for enhanced performance.
• Easy Installation: Single-hole fixing, with front panel mounting aids.
• Convenient Installation: Includes adhesive-backed silver label and hairline knob.

Technical Specifications

• Controller Type: Single-phase variable phase-angle fan controller
• Application: Induction motors, fans and pumps
• Maximum RMS On-State Current: 15A
• Minimum Operating Current: 200mA
• TRIAC Limiting RMS On-State Current: 25A
• Peak One-Cycle Surge @ 10ms: 250A
• Peak One-Cycle Surge – HS Model @ 10ms: 300A
• I²t for Fusing: 112A²s
• Isolation Voltage: 2500V RMS
• Output Range: 0–98% variable output
• Mains Supply: 230V AC ±10%
• Operating Frequency: 50/60Hz
• Maximum Recommended Unit Temperature: 70°C
• Maximum Cable Temperature: 105°C
• Maximum Recommended Load @ 20°C Ambient: 10A without additional heatsink
• Maximum Recommended Load @ 40°C Ambient: 5A without additional heatsink
• Cooling Requirement: Suitable heatsink/panel rated at 2°C/W or better for 15A operation

Operation

The VAC2-15E controls the voltage supplied to a single-phase inductive load using phase-angle regulation. Rotating the front control adjusts the output voltage, allowing the speed of compatible motors and fans to be varied smoothly.

The integrated minimum set speed adjuster can be used to establish a safe minimum output level. This is particularly useful where a motor must not be allowed to run too slowly during normal operation.

The controller’s large TRIAC provides a high margin for handling motor starting and inrush currents, while the integrated RC snubber helps suppress electrical disturbances associated with inductive loads.

Applications

The VAC2-15E is suitable for controlling HVAC fans, ventilation fans, extraction fans, induction motors, air-handling equipment, industrial fans, pump motors, workshop ventilation systems, heating and ventilation equipment and commercial and industrial air circulation systems.

Benefits

• Precise variable-speed control for compatible single-phase motors
• Infinitely variable 0–98% output
• Helps maintain a reliable minimum motor speed
• High inrush-current handling capability
• Suitable for inductive loads
• Compact enclosed construction
• Easy panel installation
• Integral RC snubber for improved inductive-load performance
• Suitable for HVAC and industrial applications
• Robust design for continuous operation

Safety & Installation

• Installation should only be carried out by suitably qualified personnel.
• Isolate the mains supply before installation, adjustment or maintenance.
• The controller must be mounted to a suitable heatsink/panel rated at 2°C/W or better for 15A operation.
• Heatsink paste is essential between the controller and heatsink to provide effective thermal bonding and heat transfer.
• Operating the unit without suitable thermal management may result in overheating and product failure.
• Ensure adequate ventilation around the controller and heatsink.
• The minimum set speed adjustment is accessed through the rear cover hole, which is normally covered by an adhesive label.
• Adjust the cermet screw using a small terminal screwdriver.
• Follow the applicable electrical installation regulations and manufacturer’s instructions.

Quick VAC Controller Selection Guide

 Which VAC fan controller is right for my application?

The easiest way to select a VAC controller is to consider three things: supply voltage, load requirements and whether you need an integrated ON/OFF switch.

• 110V application? Choose a VAC1 model.
• 230V application? Choose a VAC2 model.
• Need an integrated ON/OFF switch? Choose an /S model.
• Need variable speed control only? Choose the standard model.

Important: Always verify the motor’s compatibility with phase-angle speed control and check the actual running current, starting characteristics, ambient temperature and thermal requirements before selecting a controller.