Three output modes: phase-shift, zero-crossing fixed-cycle and zero-crossing variable-cycle
Three closed-loop modes: constant voltage, constant current and constant power
Average-value current and voltage measurement as standard
Single-row LED digital display
Optional Modbus communication
KULUN / SCR Power Controller
SMART Single-phase SCR Power Controller (Compact)
KULUN SMART: compact single-phase SCR power controller for resistance heating, drying, packaging and pipeline tracing. AC 10-150 A, Modbus.
Output Voltage Range0–100% of mains input voltage
Output Current RangeAC 10–150 A
Features
Specifications
Input | Mains supply | Single-phase AC 110–440 V, 45–65 Hz |
Control supply | DC 24 V | |
Output | Output voltage | 0–100.0% of mains input voltage |
Output current | AC 10–150 A | |
Performance | Control stability | Better than 0.2% |
Control accuracy | Better than 1% | |
Key features | Closed-loop mode | Open loop, constant current, constant voltage or constant power, selectable |
Firing mode | Phase-shift, zero-crossing fixed-cycle, zero-crossing variable-cycle | |
Setpoint signal | Analog, keypad digital or communication setpoint, selectable | |
Inputs | 2 analog inputs, 2 digital inputs | |
Outputs | 1 relay output, NO contact, AC 240 V/3 A, DC 24 V/5 A | |
Communication | Modbus RTU | |
Power sharing | Not supported | |
Temperature PID loop | Not supported | |
Protection | Mains fault | Protection on mains frequency out of range, undervoltage or input phase loss |
Overheating | Protection when thyristor temperature > 85 °C | |
Overcurrent | Protection when output current reaches the set multiple | |
Load break | Protection when load current falls below the threshold setting |
Typical Applications
Economical Single-phase Heating
For small and medium single-phase resistance heating, drying equipment, packaging machines and simple temperature control units.
OEM Equipment Integration
For space-tight, cost-sensitive integration covering basic power control needs.
Local Heating Loops
For local heat preservation, pipeline tracing, small furnace bodies and auxiliary heating branches.
FAQ
What power range does SMART cover?
Small and medium single-phase heating loops; confirm rated current by model, nameplate and load.
Why a DC 24 V control supply?
The series uses a low-voltage DC control supply; confirm on-site control supply capacity and polarity during selection.
Can it be used for SiC heating?
Check SiC cold/hot resistance, current variation and process requirements for a match.
Is it suitable for complex multi-zone control?
It fits basic single-loop power control; for multi-zone, complex interlocks or advanced communication, evaluate higher configurations.
Installation notes?
Reserve cooling space, avoid dust, corrosive gas and condensation, and size cables and protection devices to the current rating.
Selection Inquiry
Share your industry, load conditions, voltage, current, power range and site environment — our engineers will help you confirm the right configuration.
