≤75 ms Data Refresh
≤75 ms RS485 refresh for voltage, current, power, frequency and power factor, supporting real-time EV charging monitoring.
M60311 45 A Three-Phase Four-Wire DIN-Rail Energy Meter for EV Charging
M60311 is a PCB plug-in three-phase four-wire DIN-rail energy meter designed specifically for EV charging metering applications. It supports RS485 communication with Modbus RTU and DL/T 645-2007 compatibility, a ≤75 ms communication refresh time, Class 0.5 (Class C) active energy accuracy, demand and harmonic/THD measurement, and a wide operating temperature range of −40°C to +70°C. Supports 1P2W, 3P3W-Δ and 3P4W wiring configurations.
DIN-Rail Mounting (1P / 18 mm)
3P4W Direct Connection
EV Charging Optimized
45 A Maximum current (Imax)
3×120/208–240/415 V Rated voltage
Class 0.5 Active energy accuracy
−40°C to +70°C Operating temperature
Product Highlights
EV Charging Metering with Fast Data Refresh
Class 0.5 Active Energy Accuracy
Class 0.5 (Class C) active-energy and Class 2 (Class A) reactive-energy measurement in accordance with IEC 62053-21, with ±0.5 % voltage, current, frequency and active power accuracy.
RS485 Dual Protocol
RS485 communication compatible with Modbus RTU and DL/T 645-2007 protocols. The 2-position push-in terminal enables tool-free, reliable field wiring.
PCB Plug-in Design
PCB plug-in design with standard external copper pins for incoming/outgoing lines, optimized for streamlined integration into EV charging equipment.
Demand & THD Monitoring
Supports demand measurement and current/voltage harmonic analysis with THD calculation for power-quality monitoring.
Event Alarms and Self-Diagnosis
Event alarms for overcurrent, overload, overvoltage, undervoltage and wiring error. Storage and metering failure self-diagnosis with local firmware upgrade.
Applications
Applications and Selection Guidance
Technical Specifications
Technical Specifications
| Voltage connection | Direct connection |
| Rated voltage | 3 × 120/208 V – 3 × 240/415 V (single-phase 120–230 V) |
| Voltage tolerance | 0.8 to 1.15 Un |
| Frequency | 50/60 Hz |
| Current connection | Direct connection |
| Basic current (Ib) | 5 A |
| Minimum current (Imin) | 0.15 A (MID) / 0.25 A (IEC) |
| Maximum current (Imax) | 45 A |
| Pulse constant | 1600 imp/kWh (3P4W) / 1000 imp/kWh (1P2W) |
| Voltage accuracy | ±0.5 % |
| Current accuracy | ±0.5 % |
| Frequency accuracy | ±0.5 % |
| Active power accuracy | ±0.5 % |
| Active energy accuracy | Class 0.5 (Class C) |
| Reactive energy accuracy | Class 2 (Class A) |
| Communication interface | RS485 (2-position push-in terminal) |
| Protocol | Modbus RTU and DL/T 645-2007 |
| Communication type | Bidirectional |
| RS485 configuration | Modbus address (1 to 247) Baud rate: 9.6 / 19.2 / 38.4 / 57.6 / 115.2 kbps Parity: None / Odd / Even |
| Communication refresh time | Current, voltage, power, frequency, power factor: ≤75 ms Current/voltage harmonic content: 2 s |
| LCD display | 5+1 energy display, 500 ms refresh, auto-scroll with white backlight |
| LED indicator | Red pulse indicator |
| Metering function | Monitors energy consumption and major electrical variables (active/reactive power, power factor) and calculates current/voltage harmonic content and total harmonic distortion (THD) |
| Metering mode | Forward + Reverse (absolute), Forward − Reverse (algebraic sum), Forward only, Reverse only |
| Demand function | Sliding / interval type, 15-minute period |
| Event alarms | Overcurrent, overload, overvoltage, undervoltage, wiring error |
| Event record | Overcurrent, overload, overvoltage, undervoltage |
| Self-diagnosis | Storage failure and metering failure detection |
| Operating temperature | −40°C to +70°C |
| Relative humidity | ≤95%, non-condensing |
| Altitude | ≤2000 m |
| IP rating | IP20; install in an IP54 outdoor or IP51 indoor enclosure |
| Overvoltage category | OVC III |
| Protection class | Class II |
| Rated impulse withstand voltage | 6 kV |
| Wiring configuration | Direct connection; 1P2W, 3P3W-Δ, 3P4W |
| Applicable standards | IEC 62052-11:2020 / IEC 62053-21:2020 / IEC 62053-24:2020 / EN 50470-3:2022 |
Structure & Dimensions
M60311 Dimensions & Wiring
Dimensions
Wiring
FAQ
Product FAQ
What is M60311?
M60311 is a PCB plug-in three-phase four-wire DIN-rail energy meter designed specifically for EV charging metering applications, rated up to 45 A with Class 0.5 (Class C) active energy accuracy.
What is it designed for?
It is designed specifically for EV charging metering, with a ≤75 ms communication refresh time, PCB plug-in design and wide operating temperature range of −40°C to +70°C for outdoor charging stations.
What wiring configurations are supported?
Direct connection supporting 1P2W, 3P3W-Δ and 3P4W wiring configurations.
What communication does it support?
RS485 communication with Modbus RTU and DL/T 645-2007 protocols, using a 2-position push-in terminal.
What measurement functions does it provide?
Active/reactive energy and power, voltage, current, frequency, power factor, demand (15-minute period) and harmonic/THD content.
Need a Smart Metering Solution for Your Project?
Tell us your requirements and our team will provide a professional solution and quotation within 24 hours.
Quick ResponseReply within 24 hours
Expert SupportEngineer-to-engineer
Custom SolutionsProject-ready from spec
Long-term PartnerSingle point of contact
