Multi-Circuit Multifunction Energy Meter
CED-4C ML
Multi-circuit energy meter CED-4C ML is a multifunction DIN rail power meter designed for accurate multi-circuit measurement in single-phase and three-phase electrical systems. Supporting up to 4 three-phase circuits or 12 single-phase circuits, it measures voltage, current, active power, reactive power, active energy, reactive energy, power factor, frequency, demand, and total harmonic distortion (THD), with RS485 Modbus RTU communication for remote monitoring and parameter configuration.
About the Product
Multi-circuit energy meter CED-4C ML is a new-generation multifunction meter for multi-circuit measurement. It is compatible with single-phase 2-wire (1P2W), single-phase 3-wire (1P3W), three-phase 3-wire (3P3W), and three-phase 4-wire (3P4W) electrical systems, and provides all essential electrical data, including voltage, current, power, power factor (PF), total harmonic distortion (THD), frequency, demand, active energy, and other key electrical parameters.
Its plug-in connector design enables rapid installation, reducing installation time by up to 80% and minimizing wiring errors. The meter supports measurement of up to 4 three-phase circuits or 12 single-phase circuits.
Equipped with two RJ45 ports (RS485 communication), it supports remote meter reading and parameter configuration via the Modbus RTU protocol. A large backlit LCD display and 4 frontpanel controls allow convenient data viewing and parameter configuration.
Product Features
- Monitors up to 4 three-phase circuits in a compact housing less than 72 mm wide
- Uses an error-resistant plug-in hub (CRJ-31) to connect the meter and current transformers for faster wiring and reduced installation errors
- Compatible with four electrical system configurations: 1P2W, 1P3W, 3P3W, and 3P4W
- Measures and displays a wide range of electrical parameters
- Built-in RS485 communication interface supporting Modbus RTU
- Measures both voltage harmonics and current harmonics
- Compliant with CE, RoHS, and FCC standards
Product Certification
Technical Specifications
| Nominal Voltage (Un) | 3Φ, 400Y/230 VAC |
| Operational Voltage | 80% ~ 120% of Un |
| Auxiliary Power Supply | 85 ~ 276 VAC |
| Insulation Withstand Voltage | 4 kV / 1 min |
| Impulse Withstand Voltage | 6 kV, 1.2/50 μs |
| Operating Current Range | 0.4% Ib to Imax |
| Overcurrent Withstand | 20 Imax for 0.5 s |
| Operating Frequency Range | 50 or 60 Hz |
| Power Consumption | ≤ 2 W, ≤ 10 VA |
| Pulse Output Indicator | LED |
| Meter Constant | 1000 imp/kWh |
| Display | 8-digit LCD multifunction display for electrical parameters |
| Maximum Display Value | 999999.9 (kWh & kvarh) |
Performance Specifications
| Operating Humidity | ≤ 90% |
| Storage Humidity | ≤ 95% |
| Operating Temperature | -25℃ ~ +55℃ |
| Storage Temperature | -40℃ ~ +70℃ |
| Reference Operating Temperature | 23℃ (± 2℃ ) |
| Standard | IEC 62053-21 |
| Accuracy Class | Class 1 |
| Overvoltage Category | CAT III |
| Ingress Protection Rating | IP51 (Indoor Use) |
Accuracy
| Voltage & Current | ± 0.5% |
| Frequency (Hz) | ± 0.2% |
| Power Factor (PF) | ± 1% |
| Active Power (kW) ＆ Apparent Power (kVA) | ± 1% of range maximum |
| Reactive Power (kvar) | ± 1% of range maximum |
| Reactive Energy (kvarh) | Class 2 |
| Active Energy (kWh) | Class 1 |
Communication
| Communication Interface | RS485 (half-duplex) |
| Communication Protocol | Modbus RTU |
| Baud Rate (bps) | 2400 / 4800 / 9600 (default) / 19200 / 38400 |
| Address Range | 1-247 |
| Maximum Number of Connected Units | 64 pcs |
| Transmission Distance | 1000 m |
| Parity Check | EVEN / ODD / NONE (default) |
| Data Bits | 8 |
| Stop Bits | 1 |
Installation & Related Information
| Mounting Method | DIN rail mounting (35 mm) |
| Dimensions (mm) | 122.5 x 71 x 66 (L x W x H) |
| Ingress Protection Rating | IP51 (Indoor Use) |
| Material | UL 94 V-0 |
| Weight (g) | 330 |
Accessory 1: CT Hub (CRJ-31 )
Outline Dimensions
Specifications
| Model | CRJ-31 |
| Weight (g) | 12.3 |
| Output | Supports mV and mA output options: 100 mV, 333 mV, and 100 mA |
| Output Connector | RJ 12 ( 4-pin ) |
| Operating Temperature | -25℃ ~ +55℃ |
| Storage Temperature | -25℃ ~ +55℃ |
| Material | UL 94 V-0 |
Accessory 2: Split-Core Current Transformer (CT) — ESCT-T Series
Selection Table
| Model | Rated Current | Output | Accuracy Class |
| ESCT-TA10-020 | 20 A | 100mA | 0.5 |
| ESCT-TA16-150 | 150 A | 100mA | 0.5 |
| ESCT-TA24-300 | 300 A | 100mA | 0.5 |
| ESCT-TA36-600 | 600 A | 100mA | 0.5 |
Outline Dimensions
Specifications
| Frequency | 50 or 60 Hz |
| Primary Rated Current | 20 A to 600 A loads |
| Output | 100mA |
| Accuracy Class | Class 0.5 ( 20% ~ 120% of rated current) |
| Phase Angle Error | Less than 2 degrees (at 50% of rated current) |
| Insulation Voltage | 600 VAC |
| Dielectric Strength | 2.5kV / 1mA / 1min |
| Operating Temperature | -12℃ ~ +75℃ |
| Operating Humidity | < 85% |
| Standard | IEC 61869-2 |
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【Product Brochure】Multi-Circuit Multifunction Energy Meter (CED-4C ML)
6-page product brochure with full information and diagrams.
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