Product Specifications
Brand: Siemens
Part Number: 7KM3120-0BA01-1DA0
Series: SENTRON PAC3120
Type: Power Monitoring Device
Measured Parameters: Voltage, Current, Power, Frequency, Energy
Communication: Modbus RTU via RS485
Supply Voltage: 100-250 V AC/DC
Degree of Protection: IP65 Front
Product Description
The 7KM3120-0BA01-1DA0 is a compact 96×96 mm panel-mounted power monitoring device from the SENTRON PAC3120 series. It provides a complete picture of a three-phase electrical installation: voltage (L-N up to 480 V), current (via external 1 A or 5 A current transformers), active and reactive power, frequency, power factor, and both active (Cl. 0.5) and reactive energy. An integrated Modbus RTU interface (RS485) delivers the measured data directly to a building management system or PLC, while two digital inputs and two digital outputs allow monitoring of external status signals and pulsed energy forwarding.
What It Measures
- Voltage: L-N 11.5–480 V, L-L up to 690 V. True RMS, ±0.2 % accuracy.
- Current: via X/1 A or X/5 A CT. True RMS, ±0.2 % accuracy.
- Active power: ±0.5 % accuracy. Reactive power: ±1 % accuracy.
- Frequency: 45–65 Hz, automatic line frequency detection.
- Active energy: Class 0.5 per IEC 62053-22. Reactive energy: Class 2 per IEC 61557-12 / IEC 62053-23.
- Power factor, THD, demand values: available via the graphical LCD display.
Communication & I/O
- Modbus RTU (RS485): baud rates from 4.8 to 115.2 kbit/s, configurable parity and stop bits. Easily integrates into energy management software, SCADA, or PLCs.
- 2 digital inputs: externally powered (max. 30 V DC, 7 mA), monitor status signals or count pulses from external meters.
- 2 digital outputs: bidirectional, configurable as switching outputs (max. 30 V DC, 130 mA/100 ms) or as pulse outputs per IEC 62053-31 (pulse duration 30–500 ms, max. 17 Hz).
Installation & Power Supply
- Panel cutout: 92 × 92 mm (DIN standard). Outer dimensions 96 × 96 × 56 mm. Snap-in mounting with claw fasteners.
- Wide-range supply: 100–250 V AC/DC ±10 %, screw terminals. One device works across all common control voltages, reducing stock complexity.
- IP65 front: sealed against dust and water jets when correctly fitted in the panel door, suitable for wash-down areas.
- Operating temperature: -10 to +55 °C. For stationary indoor panels only.
Technical Specifications
| Parameter | Value |
|---|---|
| Product type | Power monitoring device (panel meter) |
| Series | SENTRON PAC3120 |
| Display | LCD, 54 × 72 mm active area, white backlight, 4 keys |
| Voltage measuring range (L-N) | 11.5–480 V AC |
| Voltage measuring range (L-L) | up to 690 V AC |
| Current input | X/1 A or X/5 A AC (external CT required) |
| Frequency range | 45–65 Hz, automatic detection |
| Measurement method | True RMS (TRMS), complete waveform capture |
| Voltage / Current accuracy | ±0.2 % |
| Active power accuracy | ±0.5 % |
| Active energy accuracy | Class 0.5 (IEC 62053-22) |
| Reactive energy accuracy | Class 2 (IEC 61557-12 / IEC 62053-23) |
| Communication | Modbus RTU via RS485, 4.8–115.2 kbit/s |
| Digital inputs / outputs | 2 DI (max. 30 V DC) / 2 DO (configurable, max. 30 V DC) |
| Supply voltage | 100–250 V AC/DC ±10 % |
| Degree of protection | IP65 (front), IP20 (rear terminals) |
| Panel cutout / Dimensions | 92 × 92 mm / 96 × 96 × 56 mm |
| Net weight | approx. 419 g |
| Supported languages | DE, EN, FR, ES, IT, PT, TR, ZH, PL |
SENTRON PAC3120 Panel Power Meter, Modbus RTU, LCD, IP65 – Siemens 7KM3120-0BA01-1DA0
Product Specifications
Brand: Siemens
Part Number: 7KM3120-0BA01-1DA0
Series: SENTRON PAC3120
Type: Power Monitoring Device
Measured Parameters: Voltage, Current, Power, Frequency, Energy
Communication: Modbus RTU via RS485
Supply Voltage: 100-250 V AC/DC
Degree of Protection: IP65 Front