MicroFUSION Three Phase
An ultra precise, compact, and digital SCR power controller that adapts to both analog and digital environments, featuring two performance options.
EtherNet/IP
An industrial Ethernet communication protocol used for real-time automation and factory control systems.
Modbus TCP
A simple industrial communication protocol used to connect PLCs, sensors, meters, and automation devices.
PROFINET
An industrial Ethernet standard used for communication between controllers and automation equipment.
100kA SCCR
Indicates the device can safely withstand up to 100,000 amps of short-circuit current.
CE
Indicates the product complies with European Union safety, health, and environmental requirements.
FCC
Confirms the product meets electromagnetic interference standards in the United States.
Product Information
MicroFUSION is a compact, high performance, microprocessor-based power controller available in single phase or three phase models to assist with control of AC loads.
Resistive or transformer-connected loads can be controlled in multiple ways, including Phase Angle, Zero Cross, Zero Cross Transformer (ZCT), or Fast Zero Cross (FZC). Output is controlled linearly and can be set to the average or RMS value of the voltage, current, and power.
MicroFUSION Three Phase controllers offer the following features:
- Auto-ranging voltage circuitry to enable main supply voltage (45-65 Hz)
- 24-600 VAC for UL/cUL
- 24-690 VAC for CE
- Robust design for continuous full-frame current operation without derating, up to 122°F [50°C], 6000 ft [1829 m] altitude
- 24 Vdc power source to supply control electronics and maintain critical communications
- Control setpoints through standard analog or optional digital fieldbus interfaces
- 4-SCR and 6-SCR configurations
- Delta Wye, 4-wire Wye, and Inside Delta load configurations
- Status LEDs and an LED bar graph to quickly monitor operating status
- Plug-n-play USB interface and free Control Panel software
- Ability to easily duplicate controller settings for multiple controllers
- >50,000 hour Mean Time Between Failures (MTBF)
Two Performance Options
MicroFUSION is available with one of two circuit boards. Â SX is a lower-cost alternative, whereas HX is a fully populated board that can be field-upgraded to include retransmits and other features. Available options with HX include:
- General purpose input
- Second analog input channel (second setpoint, potentiometer input, external feedback, or pulse width modulation (PWM))
- Alarm relay (form C)
- 2 x 16 bit analog retransmits (0-10 VDC or 0/4-20 mA)
- Remote display (2-line, 16-character text display)
- High performance
- True RMS power, load voltage feedback, load current feedback, high resolution control loop
- Increased accuracy, linearity
- Current limit
- External, touchsafe Class T Fusing
OEM options may be available upon factory consultation.
Dimensions shown in inches (mm)

8-50 A

80-160 A

200-400 A
Specifications
| Phase | Three |
| Firing Mode |
Phase Angle Zero Cross Zero Cross Transformer Fast Zero Cross *More options available upon factory consultation |
| Output | AC |
| Amp Sizes | 8A, 16A, 32A, 50A, 80A, 100A, 130A, 160A, 200A, 240A, 320A, 400A |
| Voltage |
24-690 VAC (CE) 24-600 VAC (UL) 45-65 Hz |
| Control | Analog or Digital |
| Feedback Type |
Voltage Current Power External *More options available upon factory consultation |
| Retransmit |
Load Voltage Load Current Load Power Load Resistance |
| Limits |
Voltage Current Power |
| Alarms |
Overtemp Shorted SCR Communications Loss Current Limit Open Load Overcurrent trip Partial Load Fault Power Limit Voltage Limit Phase Loss |
| Additional Features |
Adjustable soft start Missing cycle detection Sync-Guard Trans-Guard |
| Mean Time Between Failures | >50,000 hours |
| Line Voltage (Auto Ranging) |
UL/cUL: 24 – 600 Vac (Nominal) (+10% / -15%) (Contact CCI for other options) CE: 24 – 690 Vac (Nominal) (+10% / -15%) (Contact CCI for other options) |
| Line Frequency (Auto Ranging) | 45 – 65 Hz |
| Frame Current Ratings (Amps) | Continuous RMS (AC): 8A, 16A, 32A, 50A, 80A, 100A, 130A, 160A, 200A, 240A, 320A, 400A |
| Current Rating – Peak Surge | 20x frame rating for 10 ms |
| Minimum Hold/Latch Current | 500 mA up to 160 A 1 A at 200 – 400 A |
| Max Leakage Current | 10.6 mA @ 600 Vac 50/60 Hz |
| SCR Rating (PIV) | 1600 V peak forward & reverse |
| Fusing | Optional external Class T, branch-rated, touch-safe fusing |
| Thermal | Integrated heat sink thermal sensor |
| Current Limit % of Frame Amp Rating |
Default 105% is only option for model SX-S Adjustable 20 – 105% for models SX-L and HX |
| Current Trip | 50 – 450% of continuous rating |
| Power Dissipation | 1.3 W per A of load current per phase |
|
Control Power / Operates Internal Control Electronics |
24 Vdc (+10 / -15%) |
| Surrounding Air Operating Temperature | 32 to 122°F [0 to 50°C] with derating for 140°F [60°C] |
| Humidity | 20% to 90% RH Non-Condensing |
| Rated Operating Altitude | Up to 6000 ft [1829 m] at full rated current |
| Contaminates |
RoHS Compliant CE Pollution Degree 2 (only non-conductive pollution occurs) |
| Storage Temperature | -4 to 176°F [-20 to 80°C] |
| Standard Performance | High Performance Option | |
|---|---|---|
| Setpoint Resolution | 10k | 10k or 64k |
|
Internal Control Loop Resolution |
16k | 64k |
| Output Resolution | 12k @ 50 Hz, 10k @ 60 Hz | 50k @ 50 Hz, 42k @ 60 Hz |
| Response Time | Adjustable from 50 ms to 2 s | Adjustable from 50 ms to 2 s |
| Voltage | 3.0% of frame rating | 0.5% of frame rating |
| Current | 3.0% of frame rating | 0.5% of frame rating |
| Power | 3.0% of frame rating | 1.0% of frame rating |
| Output Linearity | 4.0% from (5 – 100%) output range | 1.0% from (5 – 100%) output range |
| Accuracy | (+10% / -15%) line voltage change will result in a max output change of 0.5% from (5 – 100%) output range | +10% to -15% line voltage change will result in a max output change of 0.05% from (5 – 100%) output range |
| Temperature Drift | Output shall not change greater than 0.5% per degree C max over the operating temperature range from (5 – 100%) output range | Output shall not change greater than 0.2% per degree C max over the operating temperature range from (5 – 100%) output range |
Downloads
| Software and Fieldbus Files – EtherNET/IP, PROFINET, Modbus TCP, EtherCAT | |
|---|---|
| Control Panel Software | Download |
| MicroFUSION EtherNet/IP EDS | Download |
| MicroFUSION PROFINET GSDML | Download |