ESC Leakage-Current Detector
ESC Series
Up to 3 independent channels of residual-current measurement (10-3000mA, 0.5-class accuracy), correction algorithm + high-speed sampling, 2 DI + 1 relay linkage.
Product Overview
The ESC Multi-Channel Leakage Measurement and Control Unit uses proprietary patented software algorithms and embedded programs, paired with industrial-grade measurement and control chips, to accurately deliver data processing and predictive analysis. With error-correction algorithms, high-speed sampling and other technologies, it thoroughly resolves existing problems such as “no alarm” and “false alarm”, making data “trustworthy” and “intelligently controllable”. It supports three channels of independent residual current monitoring, 2 DI inputs, 1 relay output and threshold setting, allowing more monitoring functions and channels to be added quickly based on site application characteristics. Integrating “measurement, control, transmission and intelligence” in one device, it is widely used in industrial parks, railways, ports, airports, agriculture, mining, equipment, meteorology, water utilities, environmental protection, new energy and other fields.
Core Monitoring Capabilities
3 channels of independent residual current monitoring (10~3000mA, Class 1 accuracy). Error-correction algorithm + high-speed sampling for accurate, fast and stable data. 2 DI inputs + 1 relay output with linkage control support. Split-core high-precision sensors run stably under strong electromagnetic interference. Product Features
Data Generated
Product Features
Accurate Data
The high-speed chip captures key parameters accurately, quickly and stably, and enables early prediction. The error-correction algorithm thoroughly resolves “no alarm” and “false alarm” issues.
Enhanced Key Parameters
Split-core high-precision sensors run stably under strong electromagnetic interference, ensuring accurate and reliable monitoring data.
All-Weather Sensors
Supports three channels of independent residual current monitoring, 2 DI inputs, 1 relay output and threshold setting, allowing monitoring functions and channels to be added quickly.
Complete Data Acquisition
Supports linkage control, standard OLED display and physical buttons for convenient on-site query and setting. RS485 communication, Modbus protocol, 36mm compact width.
Patented Algorithm Prediction
Proprietary patented software algorithms and embedded programs, paired with industrial-grade measurement and control chips, accurately deliver data processing and predictive analysis.
Compact, Flexible and Convenient
OLED display + physical buttons, pluggable terminals, 35mm DIN rail mounting, 36mm compact width — easy to deploy even in the tightest spaces. Selection Guide
System Topology
Selection Guide
Model Naming Rules
ESC - 1 2 3 1 0 - R 1 Power supply 1=DC5V / 2=AC220V 2 Display 1=LED segment / 2=OLED 3 Current channels 1=1 channel / 2=2 channels / 3=3 channels 1 Current parameter 1=10~3000mA (1A/0.5mA) 0 Reserved 0=Reserved R Communication R=RS485 (Modbus) Model Power Supply Display Residual Current Digital Input Relay Output RS485 Modbus ESC-12110-R DC 5V OLED 1 2 1 Supported ESC-12210-R DC 5V OLED 2 2 1 Supported ESC-12310-R DC 5V OLED 3 2 1 Supported ESC-22110-R AC 220V OLED 1 2 1 Supported ESC-22210-R AC 220V OLED 2 2 1 Supported ESC-22310-R AC 220V OLED 3 2 1 Supported
| Model | Power Supply / Display / Residual Current / Digital Input / Relay Output / RS485 Modbus |
| ESC-12110-R | DC 5V / OLED / 1 / 2 / 1 / Supported |
| ESC-12210-R | DC 5V / OLED / 2 / 2 / 1 / Supported |
| ESC-12310-R | DC 5V / OLED / 3 / 2 / 1 / Supported |
| ESC-22110-R | AC 220V / OLED / 1 / 2 / 1 / Supported |
| ESC-22210-R | AC 220V / OLED / 2 / 2 / 1 / Supported |
| ESC-22310-R | AC 220V / OLED / 3 / 2 / 1 / Supported |
Residual Current Transformer Selection
Model naming: ZRCT-45(C)/0.5 ZRCT Residual current transformer Inner diameter (busbar measured horizontally) 30mm / 45mm / 65mm / 80mm / 100mm / 150mm Application / Accuracy class C=cable / B=busbar; Class 0.2 / 0.5 / 1.0 * Residual current transformers for distribution cabinet busbars require special customization. Technical Parameters
Technical Parameters
Basic Parameters
Operating voltage DC 4.75~5.25V (5V version) / AC 180~250V (220V version) Power consumption ≤ 2W Operating temperature -20℃ ~ 60℃ Operating humidity < 95% Weight 150g Dimensions 36 × 110 × 69mm (L×W×H) Enclosure material Thermoplastic material UL94V0 Protection rating IP20 Mounting method Standard 35mm DIN rail mounting Display OLED Communication RS485 Communication protocol Modbus protocol
| Operating voltage | DC 4.75~5.25V (5V version) / AC 180~250V (220V version) |
| Power consumption | ≤ 2W |
| Operating temperature | -20℃ ~ 60℃ |
| Operating humidity | < 95% |
| Weight | 150g |
| Dimensions | 36 × 110 × 69mm (L×W×H) |
| Enclosure material | Thermoplastic material UL94V0 |
| Protection rating | IP20 |
| Mounting method | Standard 35mm DIN rail mounting |
| Display | OLED |
| Communication | RS485 |
| Communication protocol | Modbus protocol |
Monitoring Functions
Residual current (AC) 10~3000mA, accuracy: Class 1, up to 3 independent monitoring channels Digital input Dry contact input, built-in power supply, 2 channels Digital output Relay output, contact capacity AC250V/3A, DC30V/3A, normally open contact, 1 channel Linkage control Supports DI linkage control Threshold setting Supports threshold setting, flexibly configurable based on site application characteristics Installation Instructions
| Residual current (AC) | 10~3000mA, accuracy: Class 1, up to 3 independent monitoring channels |
| Digital input | Dry contact input, built-in power supply, 2 channels |
| Digital output | Relay output, contact capacity AC250V/3A, DC30V/3A, normally open contact, 1 channel |
| Linkage control | Supports DI linkage control |
| Threshold setting | Supports threshold setting, flexibly configurable based on site application characteristics |
Installation Instructions
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Installation Dimensions
36mm width 110mm height 69mm depth 35mm standard DIN rail b
Sensor Description
Sensor Specifications Residual current transformer Current ratio: 1A/0.5mA; aperture: 45mm Model: ZRCT-45(C)/0.5 Optional inner diameter: 30/45/65/80/100/150mm Application: C=cable / B=busbar Accuracy class: 0.2 / 0.5 / 1.0 c
| Sensor | Specifications |
| Residual current transformer | Current ratio: 1A/0.5mA; aperture: 45mm Model: ZRCT-45(C)/0.5 Optional inner diameter: 30/45/65/80/100/150mm Application: C=cable / B=busbar Accuracy class: 0.2 / 0.5 / 1.0 |
Terminal Description
Wiring definition Terminal Name Description L1 / N Power L1: live; N: neutral (220V version) 5V / GND Power 5V: positive; GND: 0V (5V version, choose either 5V or 220V) A / B RS485 communication A: RS485 A terminal; B: RS485 B terminal DI1 / DI2 Digital input Connect the other end to GND; input is directionless DO1 / DO1' Relay output Output is directionless I1+ / I1- Leakage 1 input Leakage 1 input positive/negative terminal I2+ / I2- Leakage 2 input Leakage 2 input positive/negative terminal I3+ / I3- Leakage 3 input Leakage 3 input positive/negative terminal Note: The 220V AC input and the 5V DC power input are mutually exclusive — do not connect both at the same time.
| Terminal | Name / Description |
| L1 / N | Power / L1: live; N: neutral (220V version) |
| 5V / GND | Power / 5V: positive; GND: 0V (5V version, choose either 5V or 220V) |
| A / B | RS485 communication / A: RS485 A terminal; B: RS485 B terminal |
| DI1 / DI2 | Digital input / Connect the other end to GND; input is directionless |
| DO1 / DO1' | Relay output / Output is directionless |
| I1+ / I1- | Leakage 1 input / Leakage 1 input positive/negative terminal |
| I2+ / I2- | Leakage 2 input / Leakage 2 input positive/negative terminal |
| I3+ / I3- | Leakage 3 input / Leakage 3 input positive/negative terminal |
Key Points
Definition: The ESC multi-channel temperature measurement and control unit is a FEXLINK multi-channel temperature monitoring device, suitable for continuous temperature monitoring of cables and nodes in distribution cabinets. Core capabilities: Supports multiple temperature channels (typically 8/16), high-accuracy acquisition, over-temperature alarm and RS485 upload. Application scenarios: Suitable for temperature monitoring of cable nodes in distribution cabinets, transformers, motor bearings and similar scenarios. Related products: ESA electrical safety monitoring terminal, ESF electrical fire measurement and control unit, SFA multi-factor measurement and control unit.
FAQ
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Learn MoreESC Leakage-Current Detector Application Scenarios
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