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
FEXLINK specializes in smart lightning protection and electrical safety, offering a product portfolio covering lightning protection, lightning online monitoring, lightning protection online monitoring, lightning arrester, intelligent lightning arrester, lightning arrester monitoring, grounding resistance, grounding monitoring for smart lightning protection scenarios, while addressing digital distribution, smart distribution, electricity meter, carbon neutral, industrial internet, carbon asset for digital business, helping enterprises achieve safe, efficient and low-carbon energy management.