The Siemens 7KT0307 is a SMART 7KT power monitoring device and panel instrument designed for measuring and monitoring standard electrical values in industrial and commercial power systems. It features a single-line LED display, integrated Modbus RTU communication, True RMS voltage and current measurement, 1 A or 5 A CT input, and Class 1 active-energy accuracy. Siemens identifies this exact article as the 7KT0307 Single Line LED Class 1 model.
The device is suitable for electrical distribution panels, MCC and PCC panels, feeder monitoring, factory power monitoring and Modbus-based energy-management applications.
The 7KT0307 belongs to the Siemens SMART 7KT multifunction meter family. It combines local LED indication with remote communication, allowing electrical parameters to be viewed directly on the panel and transferred to compatible automation or energy-management systems through Modbus RTU.
The instrument is designed for stationary installation inside closed electrical panels and is intended for standard electrical measurement applications.
The 7KT0307 uses a single-line LED display with a black background. Siemens specifies a display height of approximately 22 mm and width of approximately 69 mm, along with two operating keys.
The large LED characters provide clear local visibility of measured electrical values and make the meter suitable for applications where a simple, highly visible panel display is preferred.
The 7KT0307 provides Class 1 accuracy for active-energy measurement according to IEC 62053-21. Siemens also specifies Class 0.5 accuracy for voltage and current measurement according to IEC 61557-12.
This makes the meter suitable for general-purpose energy monitoring and electrical parameter measurement where Class 1 energy accuracy is appropriate.
The 7KT0307 has built-in Modbus RTU communication, allowing measured electrical data to be transferred to compatible supervisory and automation systems.
The communication interface supports RS485-based Modbus RTU integration for applications such as:
PLC monitoring
HMI systems
SCADA systems
Energy-management systems
Building-management systems
Centralized electrical monitoring
This integrated communication capability reduces the need for a separate communication device.
The 7KT0307 uses True RMS measurement for both voltage and current. Siemens specifies measurement of complete voltage waveforms, including sinusoidal and distorted waveforms, with automatic frequency detection. The measurable line-frequency range is 45–65 Hz.
True RMS measurement is useful in industrial installations where drives, converters, switch-mode power supplies and other nonlinear loads can introduce waveform distortion.
The meter is designed for monitoring voltage in compatible low-voltage electrical systems.
It supports measurement of relevant voltage values such as:
Phase voltage
Line-to-line voltage
Electrical network voltage
The measurement system can be configured according to the electrical network arrangement and the meter's specified input limits.
The 7KT0307 accepts x/1 A or x/5 A current-transformer secondary inputs. This allows it to be connected to commonly used industrial CTs for feeder, incomer and equipment-current monitoring.
The installed CT ratio should be correctly configured so that the meter displays the appropriate primary current values.
The 7KT0307 is designed to measure several standard electrical parameters, including:
Voltage
Current
Active power
Reactive power
Apparent power
Power factor
Frequency
Active energy
Reactive energy
Apparent energy
Siemens confirms these measurement functions for the 7KT0307.
This multifunction capability makes it possible to monitor important electrical parameters using one compact panel instrument.
The meter measures active power, allowing users to monitor the real electrical power consumed by connected loads.
Active-power information can be useful for:
Load monitoring
Equipment performance observation
Energy-management systems
Feeder monitoring
Industrial electrical analysis
In addition to active power, the 7KT0307 measures reactive power and apparent power.
These measurements provide additional visibility into the electrical behaviour of connected loads and can help users monitor power-system loading and power factor.
The device measures active, reactive and apparent energy.
This makes it suitable for applications such as:
Energy consumption monitoring
Feeder-level energy measurement
Factory electrical monitoring
Distribution-panel monitoring
Equipment energy analysis
Energy values can be displayed locally and transferred through the Modbus communication interface.
The 7KT0307 provides power-factor and frequency measurement, giving operators additional information about the electrical operating condition of the monitored system.
The device supports automatic line-frequency detection over the documented 45–65 Hz range.
The integrated Modbus RTU interface allows electrical measurement values to be collected by a central monitoring system.
A typical installation can use:
Electrical Network → CT/PT Measurement → 7KT0307 → RS485/Modbus RTU → PLC/SCADA/HMI
This architecture is suitable for centralized monitoring of multiple electrical feeders and distribution points.
The 7KT0307 is designed as a dedicated panel instrument for standard electrical monitoring.
It can be used in:
Main distribution panels
PCC panels
MCC panels
Feeder panels
Generator panels
Electrical switchboards
Factory control panels
Energy-monitoring panels
The single-line LED format is particularly suitable for applications where simple and clearly visible local measurement is required.
The 7KT0307 provides IP54 front protection and IP20 terminal protection, making it suitable for correctly installed indoor electrical panels.
The meter should be installed according to the manufacturer's mounting and environmental requirements.
Siemens specifies the 7KT0307 for installation in stationary panels in closed rooms.
Suitable installation environments include:
Industrial electrical rooms
Control cabinets
Distribution boards
Factory electrical panels
Commercial electrical panels
The multifunction measurement capabilities of the 7KT0307 can provide useful information about voltage, current, power factor and other electrical operating values.
The device can therefore support routine electrical monitoring and identification of changes in operating conditions.
The Siemens 7KT0307 can be considered for:
Industrial power monitoring
Main incomer monitoring
Feeder monitoring
MCC and PCC panels
Electrical distribution boards
Generator monitoring
Factory energy monitoring
Building electrical monitoring
Equipment load monitoring
Modbus-based energy-management systems
The final application should follow the Siemens wiring, protection and installation requirements.
The 7KT0308 is the Multi-Line LED Class 1 version, while the 7KT0307 is the Single-Line LED Class 1 version. Siemens identifies these as separate SMART 7KT articles.
Therefore:
7KT0307 → Single-line LED
7KT0308 → Multi-line LED
Both provide multifunction electrical measurement and Modbus RTU communication.
The 7KT0310 is another SMART 7KT multifunction meter with a graphical display and Class 1 energy accuracy, while the 7KT0307 specifically uses a single-line LED display. The 7KT0307 is therefore suited to applications where a simple LED-based local indication is preferred.
The 7KT0311 is a higher-accuracy SMART 7KT model, while the 7KT0307 is the Class 1 version with single-line LED display.
The 7KT0307 is appropriate where Class 1 active-energy accuracy is sufficient for the intended monitoring application.
The 7KT0307 can be used as a new installation or as a replacement multifunction panel meter where the application requires:
Single-line LED indication
Modbus RTU communication
1 A / 5 A CT input
Class 1 active-energy accuracy
Multifunction electrical measurement
Before ordering, verify:
CT secondary rating
CT ratio
Network configuration
Auxiliary supply
Panel dimensions
Communication requirements
Required accuracy class
The Siemens 7KT0307 is relevant for:
Electrical panel builders
Industrial buyers
Electrical contractors
Energy-management professionals
Machine builders
Maintenance departments
System integrators
OEMs
Factory electrical teams
Electrical product dealers
For SB Smart, the product is positioned around industrial electrical measurement, power monitoring and Modbus-based energy-management applications.
Siemens SMART 7KT multifunction power monitoring device
Article number 7KT0307
Single-line LED display
Class 1 active-energy accuracy
Integrated Modbus RTU communication
1 A / 5 A CT input
True RMS voltage and current measurement
Active, reactive and apparent power measurement
Active, reactive and apparent energy measurement
Power factor measurement
Frequency measurement
IP54 front protection
Suitable for stationary indoor electrical panels
Designed for industrial and commercial power monitoring
Single-line LED display: Provides clear local visibility of measured values.
Class 1 accuracy: Suitable for general-purpose energy monitoring.
Integrated Modbus RTU: Enables connection to compatible PLC, HMI, SCADA and energy-management systems.
1 A/5 A CT compatibility: Supports common industrial CT secondary ratings.
True RMS measurement: Provides reliable measurement of sinusoidal and distorted waveforms.
Multifunction measurement: Monitors voltage, current, power, energy, PF and frequency in one device.
Compact panel instrumentation: Suitable for standard industrial distribution panels.
IP54 front protection: Suitable for correctly installed indoor panel applications.
The Siemens 7KT0307 combines Class 1 multifunction electrical measurement, single-line LED indication and integrated Modbus RTU communication in a dedicated panel instrument. It supports measurement of voltage, current, active/reactive/apparent power, power factor, frequency and energy, with 1 A or 5 A CT inputs.
It is suitable for customers looking to buy or source Siemens SMART 7KT power monitoring devices for industrial panels, feeder monitoring, MCC/PCC systems, electrical distribution and energy-management applications.
For SB Smart, this product is best presented as a Siemens industrial power monitoring device for panel mounting, electrical measurement and procurement across India.
SB Smart supplies Siemens industrial electrical products, multifunction meters and power-monitoring devices across Faridabad, Gurgaon/Gurugram, Delhi NCR, Haryana, Noida, Punjab, Mumbai and other major Indian cities.
Major delivery locations include:
Faridabad
Delhi
Gurgaon/Gurugram
Delhi NCR
Noida
Greater Noida
Haryana
Punjab
Mumbai
Pune
Ahmedabad
Bengaluru
Hyderabad
Chennai
Kolkata
Jaipur
Chandigarh
Lucknow
Indore
Surat
Vadodara
Nagpur
Coimbatore
And other major cities across India
The 7KT0307 is a Siemens SMART 7KT multifunction power monitoring device with a single-line LED display, integrated Modbus RTU communication and Class 1 active-energy accuracy.
It has a single-line LED display with a black background. Siemens specifies approximately 69 mm display width and 22 mm display height.
The meter uses Modbus RTU communication, suitable for RS485-based monitoring and automation systems.
The active-energy measurement accuracy is Class 1. Voltage and current measurement are specified at Class 0.5 under IEC 61557-12.
The device supports x/1 A or x/5 A CT secondary inputs.
It measures voltage, current, active power, reactive power, apparent power, power factor, frequency, active energy, reactive energy and apparent energy.
Yes. The device uses True RMS measurement and supports sinusoidal as well as distorted voltage waveforms.
The front has IP54 protection, while the terminal side has IP20 protection.
It is suitable for electrical distribution panels, MCC/PCC panels, feeder monitoring, factory power monitoring, generator monitoring and Modbus-based energy-management applications.
7KT0307: Single-line LED display
7KT0308: Multi-line LED display
Both are Class 1 SMART 7KT multifunction power-monitoring devices.
Yes. Its integrated Modbus RTU communication can be used to transfer measurement data to compatible SCADA, PLC, HMI and energy-management systems.
SB Smart supplies Siemens SMART 7KT multifunction meters and industrial power-monitoring products in India for panel builders, industrial buyers, system integrators, maintenance teams and replacement procurement.
| Parameter | Details |
|---|---|
| Product Series | Siemens SMART 7KT |
| Model | 7KT0307 |
| Type | 3 Phase Multi-function Power Meter |
| Measurements | V, A, kW, kVA, kVAR, kWh, PF, Hz |
| Display | LCD |
| Input Current | 1A / 5A CT compatible |
| Supply Voltage | 95–240V AC |
| Communication | RS485 Modbus RTU |
| Mounting | Panel (96×96) |
| Accuracy | Class 1 (typical 7KT class range) |
| Application | Industrial power monitoring |
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