SEM3™ - Embedded Micro Metering Module™

Siemens Embedded Micro Metering Module (SEM3) is a modular metering solution for energy monitoring, data analysis, and sub billing applications. The flexible design allows for low, medium, and high density metering requirements to be met efficiently and economically using only a few standardized components that may be integrated into Panelboard, Switchboard, PDU, RPP, and Bus Plug products. SEM3 is pre-engineered to integrate into Siemens Panelboards, Switchboards, and Bus Plugs but is also offered for retrofit applications as well. Approved by New York City PSC & California CDFA for sub billing application.
Certified by third party NRTL (Nationally Recognized Test Lab) for ANSI C12.20 standards.

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SEM3 Series is a family of devices designed to measure the current, voltage, energy usage, and many additional parameters for anywhere from 1 to 45 branch circuits in an integrated panelboard or switchboard, and more than 45 branch circuits with two controllers in one enclosure.

The SEM3 series delivers accurate power information within a power distribution system with minimal space requirements. The fully programmable system also contains configurable alarms allowing you to better monitor loads and energy usage. This revolutionary design results in reduced total cost of ownership, real-time metering data and a reduced footprint.

The modular design of the SEM3 Series allows for customization to suit large or small metering needs. The simple, snap in standard or high accuracy meter modules facilitate easy maintenance and are adaptable to Siemens panelboards and all front connected switchboards, eliminating the need for large metering stations. The SEM3 system has a wide range of applications and is commonly used in:

  • Sub Billing and Cost Allocation

  • System Diagnostics and Trending

  • LEED Certification

  • Load Management

  • Commercial, Residential, and Industrial Metering

  • Meter System Retrofits

  • Data Center Applications

Up to 42 Branch Circuits + 3 for the main

  • Scalable, customizable, and configurable

  • 2 levels of metering accuracy (0.2% and 1%)

  • Modular design simplifies installation and use

  • Over, under, and delay alarms

  • Low cost and low Maintenance

  • Ethernet communications

  • Digital I/O

  • Readily ties into existing lighting panels, distribution panels, and switchboards

Note: With two controllers, a single Panelboard can be configured with more than 45 poles monitored in one enclosure. Two controllers can monitor up to 90 poles.


  • Converts single meter modules into 1, 2 and 3 phase meters

  • Provides a single Modbus slave address for entire panel

  • Supplies Class signals to Meter Modules representing A, B, C and N voltage levels

Solid Core Current Transformers (CTs)

  • CTs range from 50-1200A

  • 100 mA output CTs

  • Can measure accurately down to 1% of maximum amperage range

  • Lead wires are 18AWG, Stranded 16/30

  • Primary Rating: 600VAC,     CAT IV

  • UL 2808 rated

Split Core Current Transformers (CTs)

  • CTs range from 50-1200A

  • 100 mA output CTs

  • Rated for use on non-insulated conductors

  • Lead wires are 18AWG, UL 1015, 600V, Stranded 16/30

  • Primary Rating: 600VAC ,   CAT 1V

  • UL 2808 rated


  • Modbus RTU and TCP

  • SMTP, SNMP, and NTP

  • 2 Digital Pulse Inputs

  • One Total Energy Pulse Output

  • Optional  up to 44 Digital Pulse inputs for monitoring Water & Gas

  • Optional BacNet protocol support

Meter Module

  • Available as either High Accuracy (0.2%) or Standard Accuracy (1%)

  • Up to ANSI C12.20/0.2

  • (C12.20 Class 0.2)

  • Standalone Design, Single Phase Meter

  • Modbus RTU communications to the controller

Meter Racks

  • Available for 3, 6, 9, 15 and 21 metered branches per side

  • Addresses for Meter Module to Controller communications are hard coded into Meter Racks

  • 9, 15 and 21 Meter Racks have easy dip switch for fast configuration

  • 3, 6 Meter Rack has a rotary switch for multiple ranges; can be daisy chained to other Meter Racks

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