M60333 is a three-phase smart DIN-rail energy meter with external Rogowski coil sampling (Ib 20 A / Imax 600 A, up to 2400 A max). It features a high-rate processing chip with a specified RS485 communication refresh time of ≤75 ms, RS485 dual-protocol (Modbus RTU + DL/T 645-2007) communication, TOU 4-tariff/8-period metering and a PT ratio up to 350:1. Designed for PV, BESS and factory energy monitoring applications. Class 1 (Class B) active energy accuracy.
One RS485 link serves both Modbus RTU and DL/T 645-2007 register sets for easy integration into PV, BESS and factory energy monitoring systems. Bidirectional communication with Modbus address 1–247 and baud rate 9.6–115.2 kbps.
External Rogowski coil sampling with Ib 20 A and Imax 600 A. Higher-current configurations up to 2400 A are subject to the selected coil and confirmed product specifications.
High-rate processing chip with a specified RS485 communication refresh time of ≤75 ms for PV, BESS and factory energy monitoring applications that require fast data refresh.
Four-tariff, eight-period time-of-use metering plus a two-tariff switch, with five metering modes: absolute value, algebraic sum, import, export and net (import − export).
Monitors kW, A, V L-N, V L-L, PF, kvar and kVA with configurable activation thresholds and delays; EEP self-diagnosis, local firmware upgrade, wiring check, screensaver, page filter and running-hours counter.
−40 to +70 °C operating range; OVC III, Class II protection and 6 kV rated impulse withstand voltage in a compact 54 × 94 × 62.4 mm 3P DIN-rail housing.
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Explore Application| Voltage connection | Direct / PT |
| Rated voltage | 3 × 120/208 V – 3 × 230/400 V (3P4W) |
| Voltage tolerance | 0.8 to 1.15 Un |
| Frequency | 50/60 Hz |
| Current connection | External Rogowski coil (RC) |
| Basic current (Ib) | 20 A |
| Minimum current (Imin) | 1 A |
| Maximum current (Imax) | 600 A (max 2400 A) |
| PT ratio | up to 350:1 |
| Pulse constant | 1000 imp/kWh |
| Power consumption | ≤2 W / 10 VA |
| Active energy accuracy | Class 1 (Class B) |
| Reactive energy accuracy | Class 2 |
| Communication interface | RS485 |
| Protocol | Modbus RTU + DL/T 645-2007 |
| Communication type | Bidirectional |
| RS485 configuration | Modbus address 1–247; baud rate 9.6/19.2/38.4/57.6/115.2 kbps; parity None/Odd/Even |
| Specified communication refresh time | ≤75 ms |
| LCD display | 5+3 default, auto-expands to 6+2 / 7+1 / 8+0; 500 ms refresh; white backlight |
| LED indicator | Red pulse LED |
| Buttons | Page turning and setting |
| Metering function | Energy, active/reactive power, power factor, voltage/current harmonic content, apparent energy |
| Metering modes | Absolute value, algebraic sum, import, export and net (import − export) |
| Tariff function | TOU (4 tariffs, 8 periods default) + switch tariff (2 tariffs default) |
| Self-diagnosis | EEP detection |
| Event alarms | kW, A, V L-N, V L-L, PF, kvar, kVA with configurable activation threshold and delay |
| Other functions | Wiring check, screensaver, page filter, running-hours counter |
| IP rating | IP20 (install in an IP54 enclosure outdoors or IP51 enclosure indoors) |
| Overvoltage category | OVC III |
| Protection class | Class II |
| Rated impulse withstand voltage | 6 kV |
| Operating temperature | −40 to +70 °C |
| Relative humidity | ≤95%, non-condensing |
| Altitude | ≤2000 m |
| Housing dimensions | 54 × 94 × 62.4 mm |
| Installation | 35 mm DIN-rail, 3P (3 modules) |
| Wiring mode | External RC connection; 3P4W |
| Applicable standards | IEC 62052-11:2020 / IEC 62053-21:2020 / EN 50470-3:2022 |
M60333 is a three-phase smart DIN-rail energy meter with external Rogowski coil sampling (Ib 20 A / Imax 600 A, up to 2400 A max). It features ≤75 ms RS485 communication refresh, dual-protocol RS485 (Modbus RTU + DL/T 645-2007) and TOU 4-tariff/8-period metering.
External Rogowski coil sampling with rated current from 20 A to 600 A, supporting up to 2400 A maximum. A PT ratio up to 350:1 is also supported.
RS485 supports Modbus RTU and DL/T 645-2007. Bidirectional communication with a specified refresh time of ≤75 ms.
TOU metering with 4 tariffs and 8 time periods (default), plus a 2-tariff switch function.
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