Sensitive to Input R-Y-B Phase Sequence
Blocks operation whenever the incoming phase order is incorrect.
Single Phase AC Power Controllers
Product Overview
The Single Phase AC Power Controller is a thyristorised module that regulates power to resistive and inductive loads with stepless accuracy. Built for furnaces, ovens, kilns and process heating lines, it holds set points steadily under continuous industrial duty. Precise firing control cuts wasted energy and thermal overshoot, while robust protection keeps heaters, wiring and production uptime safe.
Request QuoteTechnical Specifications
Voltage Rating
- 110V
- 230V
- 380V
- 415V ±10%
- 50Hz ±5%
Supply System
- 1 Phase
- 2 Phase
- 3 Phase
Current Rating
- 15A – 350A
- Higher ratings available on request
Control Signal
- 4–20mA DC
- 0–10V DC
- 10k Potentiometer
Control Method & Isolation
- P / PI / PD / PID
- 2.5KV RMS between Power Circuit and Control Circuit
Features
Designed with advanced thyristor technology to deliver precise control, industrial reliability, comprehensive protection, and seamless integration for demanding heating applications.
Input Single Phasing Trip Protection
Detects loss of a supply phase and trips the unit safely.
Instantaneous Over Current Trip Protection
Immediate trip response on abnormal load current.
Fault / Single Phase / Over Current LED Indications
Front-panel diagnostics for fast fault identification.
Trip Relay Potential-Free Contact
Clean contact for annunciation and plant interlocking.
External Trip Reset Facility
Remote reset from the control desk after a trip event.
External Interlock Facility
Links plant safety chains before power is applied.
PLL for Firing Pulse Synchronization
Phase lock loop keeps firing stable on noisy supplies.
Immune to Line Distortions & Fluctuations
Consistent output despite disturbed supply conditions.
Stepless Power Control
Smooth 0–100% regulation with no stepping.
RC Snubber (MOV) Protection
Suppresses transients across the thyristor stack.
SCRs Rated for 1400V PIV or Above
Generously rated devices for long service life.
Separate Bias Settings for Voltage & Current Signals
Independent trimming for each input signal type.
Current Limit Facility
Caps inrush current to protect heaters and cabling.
Separate Voltage & Current Stability Adjustments
Fine tune regulation for each control mode.
Maximum Voltage Limit Facility
Sets a hard ceiling on delivered output voltage.
Heat Sink Over Temperature Protection
Thermal supervision of the engineered heat sink.
Can Take 10% Overload for 2 Hours
Sustained overload capacity for demanding cycles.
Output Voltage Linear to Input Signal
Predictable, linear response across the full range.
Accepts 0–10V DC or 4–20mA DC Input Signals
Direct compatibility with PID, PLC and DCS systems.
Applications
Heat Treatment Furnaces
Industrial Ovens
Kilns
Electric Dryers
Environmental Chambers
Extruders
Moulding Machines
FAQs
It is used across heat treatment, ceramics, glass, plastics, food processing, textiles and general process heating plants wherever accurate temperature or power regulation is required.
Standard single phase modules are offered from 15 A to 350 A. Higher ratings and custom panel builds can be engineered on request.
Yes. The controller accepts 4–20 mA, 0–10 V or 10k potentiometer commands from any standard P, PI, PD or PID temperature controller.
It integrates directly with PLC and DCS systems through analog command inputs, external trip/reset and interlock terminals.
Current limit, instantaneous overcurrent, single phasing, phase sequence, heat sink over temperature, external trip and interlock protection are built in.
Share your load rating, supply voltage and control signal type with our team and we will respond with a technical proposal and pricing.
