SFA Multi-Parameter Controller - electrical fire
Multi-Element Fusion · Intelligent Control · 0.2S Class Accuracy
The SFA Multi-Parameter Controller provides cloud-edge intelligence for multi-parameter monitoring and control. It integrates data acquisition, local processing, and cloud connectivity, enabling comprehensive electrical safety management across distribution rooms and critical infrastructure facilities.
Product Overview
The SFA Multi-Element Intelligent Controller is FEXLINK's smart monitoring and control terminal designed for energy source management and electrical safety monitoring. It is a multi-element fusion type device that integrates acquisition, control, communication and management into one whole, featuring gateway functionality, and is installed via a 35mm standard DIN rail inside electrical control cabinets, distribution cabinets, or externally alongside monitored devices.
It provides standard full electrical parameter measurement including three-phase voltage, three-phase current, active/reactive power, power factor, system frequency, and active/reactive energy. It supports time-of-use metering of forward/reverse active/reactive energy; offers optional 0-31 order harmonic analysis and three-phase unbalance dynamic monitoring functions; and simultaneously supports 4 channels of temperature, 1 channel of temperature & humidity, 1 channel of residual current, 2 channels of digital input, and 2 channels of relay output. Matched with dedicated transformers, it covers a 5A~1000A current monitoring range (expandable up to 6000A maximum), and uses RS485/4G/RJ45 multi-communication to access the cloud platform. The high-clarity OLED screen enables easy local debugging and inspection.
Core Capabilities
- Full electrical parameter measurement: three-phase voltage/current/power/power factor/frequency/electrical energy, with 0.2S class energy accuracy.
- Power quality analysis: 0-31 order voltage/current harmonic quantity measurement, three-phase unbalance dynamic analysis.
- Multi-element monitoring: 4-channel temperature + 1-channel temperature & humidity + 1-channel residual current + 2-channel digital input + 2-channel relay output.
- Wide range adaptation: matched dedicated sensors cover a 0-6000A current range, with cable/busbar multi-application support.
Product Features
Comprehensive Monitoring & Acquisition
Three-phase full electrical parameter measurement, time-of-use metering of forward/reverse active/reactive energy, 4-channel temperature + 1-channel temperature & humidity + 1-channel residual current + 2-channel digital input + 2-channel relay output — one unit meets multiple maintenance monitoring needs.
Power Quality Analysis
Supports 0-31 order voltage/current harmonic quantity measurement and three-phase unbalance dynamic analysis, enabling per-phase angle unbalance monitoring and smart statistical analysis (optional function).
High-Precision Metering
Active electrical energy default accuracy is 0.5 class; monitoring accuracy can reach up to 0.2S class, meeting energy source management needs. Combined with upper-unit software, it executes time-of-use metering and energy analysis.
Multi-Channel Temperature Monitoring
Supports 4-channel NTC temperature sensors for contact temperature monitoring and analysis, plus 1 channel of temperature & humidity monitoring for real-time insight into environmental status changes.
Residual Current Monitoring
Supports 1-channel residual current monitoring, 10~3000mA range, class 1 accuracy, enabling leakage current dynamic detection and monitoring to eliminate electrical hazards.
Linkage Control
Supports 2-channel relay output (AC250V/3A, DC30V/3A), easily completing threshold-based or feature-monitoring linkage control, enabling automatic abnormal response.
Multi-Communication Fusion
Dual-channel RS485 + 1-channel RJ45, supports 4G/Zigbee/LoRa expansion, standard Modbus RTU protocol and supports MQTT, integrating acquisition, control, communication and management into one whole, featuring gateway functionality.
OLED Local Display
High-clarity OLED screen + full buttons enable local-side data display and product configuration for easy debugging and inspection. Can be expanded with an HMI screen to build an ecosystem-localized monitoring strategy.
Multi-Module Expansion
Supports access to multiple classes of monitoring modules including power quality, three-phase unbalance, smart meter, electrical position, electrical fire, leakage current, digital, lightning protection, lightning current, and grounding resistance.
Model Selection Guide
Model Naming Convention
| Model | Digital Input | Relay Output | Meter Monitoring | Phase Monitoring | Harmonic Monitoring | Downlink RS485 | Uplink WAN | Uplink 4G |
|---|---|---|---|---|---|---|---|---|
| SFA-10011-ER | 4 | 2 | Yes | No | No | Dual | Yes | -- |
| SFA-10011-GR | 4 | 2 | Yes | No | No | Dual | -- | Yes |
Current Transformer Selection (ZCT)
Naming:ZCT-9(C)-5/0.5
- • inner diameter:9.5/16/24/36/50mm
- • Application: Cable / Busbar
- • Current:5~1500A
- • accuracy:0.2/0.5/1.0Class
Residual Current Transformer (ZRCT)
Naming:ZRCT-45(C)/0.5
- • inner diameter:30/45/65/80/100/150mm
- • Application: Cable / Busbar
- • accuracy:0.2/0.5/1.0Class
TemperatureSensor (ZTS)
Naming:ZTS-01
- • 01:NTCTemperatureSensor
- • 02:digitalTemperaturechipsensor
- • MonitoringRange:-30~125℃
- • Accuracy:±1℃
Current Transformer Selection Image
Matched Dedicated Current Transformer Covers 5A~1000A Current Range, Support Cable/Busbar Multiple Applications, 0.2/0.5/1.0 Class accuracy optional.
| Rated value | 5A | 100A | 200A | 400A | 600A | 1000A |
|---|---|---|---|---|---|---|
| Currentratio | 5A/0.33V | 100A/0.33V | 200A/0.33V | 400A/0.33V | 600A/0.33V | 1000A/0.33V |
| aperture | 16mm | 24mm | 24mm | 36mm | 36mm | 36mm |
Residual Current Transformer Selection Image
inner diameter 30/45/65/80/100/150mm optional, Support Cable/Busbar Application, 0.2/0.5/1.0 Class accuracy, Monitoring Range 10~3000mA.
Temperature sensor Selection Image
NTC Temperature Sensor(ZTS-01)anddigitalTemperaturechipsensor(ZTS-02)optional,MonitoringRange -30~125℃,accuracy ±1℃.
Technical Specifications
Basic Parameters
| Working Voltage | AC 180~250V (220V) |
| Power Consumption | ≤2W |
| Operating Temperature | -20℃~60℃ |
| Working Humidity | <95% |
| Product Weight | 260g |
| dimension | 107×88×63mm(L×W×H) |
| Housing Material | Thermoplastic Material UL94V0 |
| Protection Class | IP20 |
| Mounting Method | Standard 35mm DIN Rail Mount |
| Display Type | OLED High-Definition Screen |
Monitoring and Communication Parameters
| Communication Interface | RS485 / 4G / RJ45 |
| Communication Protocol | Modbus RTU / MQTT |
| Voltage Monitoring | rated220V/380V,accuracy0.5Class/0.2S |
| Current Monitoring | 5A/100A/200A/400A/600A/1000A,accuracy0.5Class |
| Frequency | 45~65Hz,Accuracy0.01Hz |
| Active Electrical Energy | accuracy0.5Class/0.2S |
| Reactive Electrical Energy | Accuracy 2 Class |
| Residual Current | 10~3000mA,Accuracy 1 Class |
| Temperature Monitoring | -30~125℃,±1℃ |
| Humidity Monitoring | 0~100%RH,±2%RH |
| Digital Input | 4-Channel Dry Contact Input, Built-in Power Supply |
| Relay Output | 2channelnormally openContact,AC250V/3A,DC30V/3A |
installation Instructions
installation Diagram
Interface Description
Interface Definition
| Pin Class | End Terminal | Definition |
|---|---|---|
| Voltage Input | A1/A3/A5/A7 | A/B/C phase voltage Input End, Neutral Wire Input End |
| power SupplyOutput | 5V/12V/G | 5V/12V power Supply Output, 0V |
| CurrentInput | B1~B6 | A/B/C phase Current Input positive/negative End |
| Residual Current | B7/B8 | residual Current Input negative End/positive End |
| RS485 Communication | E5~E8 | RS485-1 master/RS485-2 slave A/B End |
| DIInput | C7/C8/E1/E2 | Digital Quantity 1~4 Input (connect GND) |
| Temperature | C1~C6 | NTC Temperature 1~4 Input, GND |
| Relay Output | D1/D2/D4/D5 | Output1/Output2 End Terminal |
| Meter Calibration | E3/E4 | meter calibration Input positive End/negative End |
Key Points
- Definition： The SFA Multi-Element Smart Controller is FEXLINK's core cloud-edge intelligence product, integrating multiple electrical and status quantity monitoring capabilities.
- Core Capabilities： Acquires residual current, temperature, voltage, current, power and energy; supports multiple CT options; uploads via RS485/MQTT.
- Scenarios： Suitable for distribution cabinet upgrades, combined energy and safety monitoring in commercial complexes, and industrial plant power measurement and control.
- Related Products： ESA Electrical Safety Terminal, ZSA Embedded Multi-Function Meter, FG Smart Gateway.
Frequently Asked Questions
Product FAQ
What is SFA Multi-Element Smart Controller?
The SFA Multi-Element Smart Controller is FEXLINK's core cloud-edge intelligence product, integrating multiple electrical and status quantity monitoring capabilities.
What scenarios does SFA Multi-Element Smart Controller apply to?
Suitable for distribution cabinet upgrades, combined energy and safety monitoring in commercial complexes, and industrial plant power measurement and control.
How does SFA Multi-Element Smart Controller differ from traditional solutions?
Compared with single-function controllers, the SFA integrates multi-element acquisition, covering both electrical safety and energy management in one device.
How is SFA Multi-Element Smart Controller installed and integrated?
DIN-rail mount inside the distribution cabinet, connect voltage/current transformers and residual-current CTs, and wire the RS485 bus.
How can I purchase FEXLINK products or request a demo?
Submit requirements via the Contact page on the FEXLINK website, or call +86-755-8653-6148 to request a demo and selection consultation; engineers will propose a matched solution and quotation based on your scenario.
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FEXLINK Business Scope
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