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Carlo Gavazzi WM12-96.AV5.3.3.X is a 96×96mm panel-mounted three-phase multi-functional power meter. It adopts TRMS True RMS measurement technology, designed for 400V three-phase four-wire systems, with 230V AC power supply and no RS485 communication function. Its core advantages include high-precision measurement (Voltage/Current ±0.5% FS), multi-parameter display (12 measuring pages), wide measuring range (0.03-6A current) and high protection degree (IP65 front panel). It is ideally applied in industrial automation, commercial buildings, data centers and OEM equipment. It can monitor power parameters in real time, help users optimize energy consumption and reduce operating costs.
- Model Code Definition
| Section | Code | Description |
| Series Code | WM12-96 | Carlo Gavazzi WM12 series 96×96mm panel-mounted multi-functional power meter |
| Range Code | AV5 | 380/660V line-line, 5(6)A AC current input, suitable for 400V power system |
| System Type | 3 | Three-phase four-wire system (configurable as three-phase three-wire, ARON, two-phase or single-phase) |
| Power Supply Type | 3 | 230V AC ±15% +10%, 50-60Hz (Code A=24VAC, B=48VAC, C=115VAC, D=18-60VDC) |
| Function Option | X | Without RS485 output (S=With RS485 MODBUS/JBUS output) |
Order Number: WM12-96AV533X (Standard single package)
- Main Technical Specifications
| Category | Item | Value | Remark |
| Basic Info | Product Type | Three-phase multi-functional power meter | Built-in programming keypad, TRMS true RMS measurement |
| Display | 14mm LED, 3×3 digits | Refresh rate: 700ms, 12 measuring pages | |
| Mounting Type | Panel mounting | Dimension:96×96×63mm, Cut-out size:61.4×61.4mm | |
| Protection Class | Front IP65, Terminal IP20 | Comply with NEMA4x/12 standard | |
| Electrical Specs | Voltage Range | 380/660V L-L, 185-460V L-N | AV5 range, Accuracy: ±0.5% FS +1 digit |
| Current Range | 5(6)A AC, Phase current:0.03-6A, Neutral current:0.09-6A | Accuracy: ±(0.5% FS +1 digit) within 0.25-6A | |
| Supply Voltage | 230V AC ±15% +10%, 50-60Hz | Power consumption:4.5VA | |
| Measured Parameters | Voltage, Current, Power, Power Factor, Frequency, Demand, Maximum value | System-wide & phase-separated measurement supported | |
| Accuracy | Active/Apparent Power | ±(1% FS +1 digit) (0.25-6A) | ±(1% FS +5 digits) at 0.03-0.25A |
| Reactive Power | ±(2% FS +1 digit) (0.25-6A) | ±(2% FS +5 digits) at 0.03-0.25A | |
| Frequency | ±0.1% Hz (48-62Hz) | Sampling:1400 samples/s@50Hz, 1700 samples/s@60Hz | |
| Neutral Current | ±(1.5% FS +1 digit) (0.25-6A) | ±7 digits at 0.09-0.25A | |
| Communication | Interface | None (X version) | S version: RS485, MODBUS/JBUS, 9600 baud rate |
| Communication Distance | – | Max 1200m for S version, 2/4-wire connection | |
| Ambient Specs | Operating Temperature | -5℃ ~ +50℃ | RH＜90% non-condensing @40℃ |
| Storage Temperature | -30℃ ~ +60℃ | RH＜90% non-condensing @40℃ | |
| Insulation Class | Overvoltage Category III (IEC 60664) | Withstand 4000VAC between input and power supply for 1 minute | |
| Physical Specs | Housing Material | Self-extinguishing ABS (UL 94 V-0) | Weight: approx.400g (with package) |
| Terminals | Screw type | Max cable cross-section:2.5mm², 5(6)A current input | |
| Certification | CE | Yes | Comply with EN50084-1 Class A, EN61000-6-2 Class A |
| UL | Yes | cULus certified, meet North American safety standards | |
| EMC Standard | Comply with EN61000-4-5 | 1.2/50μs surge immunity |
- Full Model List of WM12-96 Series
| Range Code | System Type | Power Supply | Function | Model | Order No. |
| AV5 | 3(3-phase 4-wire) | A(24VAC) | X(No RS485) | WM12-96.AV5.3.A.X | WM12-96AV53AX |
| S(RS485) | WM12-96.AV5.3.A.S | WM12-96AV53AS | |||
| B(48VAC) | X | WM12-96.AV5.3.B.X | WM12-96AV53BX | ||
| S | WM12-96.AV5.3.B.S | WM12-96AV53BS | |||
| C(115VAC) | X | WM12-96.AV5.3.C.X | WM12-96AV53CX | ||
| S | WM12-96.AV5.3.C.S | WM12-96AV53CS | |||
| 3(230VAC) | X | WM12-96.AV5.3.3.X | WM12-96AV533X | ||
| S | WM12-96.AV5.3.3.S | WM12-96AV533S | |||
| D(18-60VDC) | X | WM12-96.AV5.3.D.X | WM12-96AV53DX | ||
| S | WM12-96.AV5.3.D.S | WM12-96AV53DS | |||
| AV6 | 3(3-phase 4-wire) | 3(230VAC) | X | WM12-96.AV6.3.3.X | WM12-96AV633X |
| S | WM12-96.AV6.3.3.S | WM12-96AV633S |
Special Models: WM12-DIN (DIN rail type), WM14-96 (with 15th harmonic analysis)
- Replacement & Equivalent Models
4.1 Internal Carlo Gavazzi Replacement
| Old Model | New Model | Replacement Description |
| WM1-96 | WM12-96 | Upgraded true RMS measurement, higher accuracy, added demand & max value display |
| WM12-96.AV5.3.D.S | WM12-96.AV5.3.D.S | Fully compatible, optimized firmware, support latest MODBUS protocol |
4.2 Cross-brand Equivalent
| Brand | Equivalent Model | Advantages |
| Schneider | PM2000 | More cost-effective, higher front IP65 protection |
| Siemens | 7KM2112 | Support more system types including ARON & two-phase, flexible programming |
| ABB | E200 | 12 display pages for clearer reading, standard 96×96mm mounting size |
- Application Fields & Cases
5.1 Recommended Applications
| Application | Typical Working Condition | Advantages |
| Industrial Automation | Motor control center, distribution cabinet, PLC system | TRMS measurement, perfect for non-linear loads with high precision |
| Commercial Buildings | Central air conditioning, lighting system, elevator control | 3-phase 4-wire measurement, monitor unbalanced load, IP65 suit for machine room |
| Renewable Energy | PV inverter, wind power system | Demand & peak value monitoring, support single/three-phase systems |
| Data Center | UPS system, server cabinet power distribution | High precision, low power consumption 4.5VA, stable 24h operation |
| OEM Equipment | Industrial machinery, medical equipment, testing instrument | Standard 96×96mm easy integration, optional RS485 communication |
5.2 Not Recommended Applications
High voltage system (over 660V L-L, voltage transformer required)
High current system (over 6A, current transformer required)
Explosion hazardous area (non-explosion-proof design)
Underwater or long-term humid environment (only IP20 for terminals)
5.3 Application Cases
Case 1: Motor Control Center Renovation for Automobile Factory
Original equipment: Analog pointer meters with inaccurate reading and no data recording
Solution: WM12-96.AV5.3.3.S with RS485 + SCADA system
Effect: Real-time monitor three-phase current, voltage and power, detect unbalanced load, save 15% energy, annual electricity saving about 80,000 RMB
Case 2: Energy Management System for Commercial Complex
Demand: Monitor power parameters of distribution cabinets on 12 floors, remote meter reading
Solution: 12 sets WM12-96.AV5.3.3.S connected to central controller via MODBUS bus
Effect: Auto generate energy consumption report, identify high-energy areas, optimize power distribution, save 20% energy yearly
- Air Shipment Compliance & Certification
6.1 Shipping Confirmation
| Item | Status | Explanation |
| Built-in Lithium Battery | No | External power supply only |
| Dangerous Goods Classification | Non-dangerous goods | Comply with IATA DGR rules, no special shipping limit |
| Transport Restriction | None | Shipped as general electronic goods |
| Packaging | Standard anti-static package | Prevent static damage during transit |
6.2 Certification Documents
CE Certificate: Available on official Carlo Gavazzi website (Doc ID:WM12 96 DS ENG 100317)
UL Certificate: Apply via global Carlo Gavazzi support center
Manufacturer Declaration: Include EMC, safety and RoHS compliance statement
- Selection Guidelines
- Range Selection: AV5 for 400V system (380/660V L-L), AV6 for 100V system (120/208V L-L)
- Power Matching: Select A/B/C/3/D code according to on-site power supply to avoid damage
- Communication: Choose S version for remote monitoring, X version for local display only
- Mounting: Panel cut-out size 61.4×61.4mm; current signal must connect via CT, direct connection forbidden
- System Setting: Reset via keypad to three-phase three-wire, ARON, two-phase or single-phase as required
- Matching Accessories
| Accessory | Model | Function |
| Current Transformer | CT-500/5 | 500A/5A for large current measurement |
| Voltage Transformer | VT-400/100 | 400V/100V for high voltage measurement |
| Communication Module | RS485-USB | Connect meter to PC for parameter setting & data reading |
| Mounting Kit | WM12-MOUNT | Fixing screws and gaskets for panel installation |
| Configuration Software | Gavazzi Config Tool | Remote parameter setting and file generation |
Full Model List of Carlo Gavazzi Multi-functional Power Meters
- General Coding Rule
| Section | Code | Meaning |
| Series | WM12-96 | 96×96mm panel type |
| WM12-DIN | DIN rail type (4 modules) | |
| Range | AV5 | 380/660V L-L, 400V system |
| AV6 | 120/208V L-L, 100V system | |
| System | 1 | Single-phase |
| 2 | Three-phase three-wire | |
| 3 | Three-phase four-wire | |
| Power | A=24VAC, B=48VAC, C=115VAC, 3=230VAC, D=18-60VDC | |
| Function | X=No RS485, S=With RS485 MODBUS |
- Complete WM12-96 & WM12-DIN Model List
WM12-96 Panel Mount
AV5 Series (400V System)
All single-phase / three-phase three-wire / three-phase four-wire models with all power supply & communication options are fully listed as above.
AV6 Series (100V System)
Full range models are available in single-phase, three-phase three-wire and three-phase four-wire types.
WM12-DIN Rail Mount
Mainly three-phase four-wire AV5 & AV6 versions with all power supply and communication options.
- Extended High-end Models
| Model | Feature | Order No. |
| WM14-96.AV5.3.3.S | 15th harmonic analysis | WM14-96AV533S |
| WM30-96.AV5.3.3.S | 0.2 high precision, 32nd harmonic FFT analysis | WM30-96AV533S |
