Power Solutions

SITEM provides power distribution solutions, such as the Multi Transfer Switch (MTS) automatic power distribution system that can transfer electricity from one power source to another automatically, instantly, without interruption, no impact. SITEM provides Power Control and Distribution Devices (PDUs) which are essential devices that perform the functions of power distribution. SITEM also provides Computer Level Grounding systems that are designed to supply power to critical loads.

Contact the SITEM team on SITEM’s official LINE account @sitem  or fill out the form at the end of this page for more information or any inquiries to SITEM’s products and services.

Multi Transfer Switch : MTS) RIELLO

Uninterruptible power supply is a device that reduces the risk of computer data damage from power failure or power outage. For the Data Center, there is another type of device that can also reduce the risk caused from power outages. It is an accessory for organizations that have redundant power supply, such as a building that has two power transformers or a building that has two Hot standby UPS. The Multi Transfer Switch (MTS) is capable of monitoring status of both power sources. It has the ability to transfer the power distribution of one source to another source automatically without interruption. So, there is no effect on the power usage of the computer or electrical equipment. We call this device Multi Transfer Switch or MTS, or some may have called Static Transfer Switch (STS)

The Multi Transfer Switch (MTS) is responsible for automatically transferring the power source. When a power outage occurs at the main power source, MTS will automatically switch the backup power source to supply power immediately. There is no impact on electricity consumption and electrical loads. It will also transfer the electrical power back to the main power source when the main power source is ready to deliver power to the load.

The Multi Transfer Switch (MTS) sold by the company is widely used because RIELLO products are quality products and is manufactured in Italy. It is assured that when using MTS products from RIELLO, the power system will be more stable.

Static Transfer Switch (STS), the RIELLO product sold by the Company is detailed as follows:

Current range :    16 A
Voltage :    180 – 276 Vac
Frequency :    50/60 Hz
Input sockets :    Input sockets 2 IEC 320 (16 A)
Output socket :    8 ช่อง (IEC 320 10 A)
Current rating :    4 A (separate rating for each output)
Operating Temperature :    0 °C / +40 °C
Protection :    Overcurrent, Overvoltage, Undervoltage, Protection against energy back-feed
Communication :    RS232 port Ethernet port
IP rating :    IP20

Power Distribution Unit: PDU

Power Distribution Unit : PDU for Server Rooms

PDU (Power Distribution Unit) consists of an important device that supplies power, Computer Level Grounding and Monitoring Systems which efficiently manage electricity consumption.

With experience and expertise in assembling low voltage switchgear cabinets in the MNS Series, ABB has developed the MNS iPDU, a compact power supply cabinet designed to supply sensitive loads such as a computer room and Data Center.

Benefits of MNS iPDU

– High quality ABB equipment.
– Reliable intelligent monitoring system.
– Smissline busbar system.
– Isolation transformer can be installed.

The main internal feature of MNS iPDU is that it can be designed in many sizes to meet your data center needs. The structures of the cabinet are net or glass double door so that we can see the devices inside. The back cover and side cover is detachable, so it is easy for maintenance. The interior is clearly divided making the wiring easier to arrange. The part is coated with Epoxy using Electro-Statically process with the thickness of more than 70 μm so it is beautiful and durable.

SmissLine Power Distribution Bus Bar System

ABB is the first to design a Pluggable Socket System that can be easily removed and disassembled to help ensure continuity of power supply and high security. It also saves cost and time used for installation and maintenance. SmissLine can be equipped with a current monitoring system, which can be easily installed with a clip-on system input of breaker. Then, it gathers the signals into the main control unit (CMS-600) so that it can transmit power consumption data to the power control system by fieldbus, such as Modbus RTU.

Busway/Busduct System in the data center – PowerWave Bus System

Busway/Busduct are currently available for installation and use in high-rise buildings including used for transmission of electricity within the Data Center as well.

Product that SITEM provides Busway/Busduct system installation service and distribute is PDI PowerWave Bus System manufactured in the USA. The PDI PowerWave Bus System is designed as a copper or aluminum conductor rod with the conductor separated by an insulator inside. Most of the electrical systems are 3 phase, 380/220 Volt because they are convenient for safe installation.

The PDI PowerWave Bus System has various design and is manufactured for many uses. It is available in sizes from 160 amps up to 800 amps. There is finger protection from reaching to the conductor inside the Busway/Busduct rail. Its safety lever is IP2X. The equipment parts are easily to assemble Including Bus Sections, Input Power End Feeds, Splice Connections, and Tap Off Boxes.


PDI PowerWave Bus System มีการออกแบบและผลิตหลากหลายพิกัดให้เลือกใช้ โดยมีขนาดตั้งแต่ 160 แอมป์ ไปจนถึงขนาด 800 แอมป์ มีระดับการป้องกันนิ้วมือเข้าไปสัมผัสกับตัวนำภายในราง Busduct โดยมีความปลอดภัยระดับ IP2X มีอุปกรณ์ประกอบที่สามารถติดตั้งได้ง่าย ประกอบไปด้วยรางตัวนำไฟฟ้า (Bus Sections), อุปกรณ์ต่อสายด้านเข้า (Input Power End Feeds), อุปกรณ์เชื่อมต่อระหว่างตัวนำ (Splice Connections) และอุปกรณ์ต่อพ่วงวงจรย่อย (Tap Off Boxes)

Tap Off Boxes of the Busway/Busduct System within the data Center can be designed to monitor the power consumption of each branch circuit by installing the branch circuit monitoring system (BCMS). The advantage of BCMS installation is that the user can manage the power consumption of each rack and set an alert when there is an overcurrent.


The number one reason for generator set start-up failures is battery exhaust. GenStart Batteryless generator starting systems increase generator set availability. This ensures that startup power is available when it is needed most.

GenSTART – Active Power

GenSTART® from Active Power is a battery-free, modular starting system that adds additional nines of availability to multiple standby generator sets. GenSTART supplies 1725 Cold Cranking Amps to a generator set starting motor, so you can be assured starting power is available when it’s most critical.

System Features

  • Significantly improves starting reliability
  • Extremely low maintenance
  • Built in AC disconnect
  • Thermal protection with automatic reset
  • Status monitoring capability
  • Continuous control power availability
  • Floor- or wall-mount configurations

Ever Worry if the Generator Will Start in Critical Moments?


The GenSTART Starting Module provides reliable power to a generator set engine’s starting motor. Almost all generator sets depend on batteries for cranking power. However, the number one reason for start failures of standby generator sets is dead starting batteries. GenSTART is designed to increase the reliability of the generator set starting system to ensure a successful cranking cycle of the generator engine.


The GenSTART Starting Module is installed in parallel with batteries or replaces batteries completely, to ensure the generator engine cranks to a successful start at the critical time of a power event. It can be installed on either the wall or floor, with optional floor stands. Once installed, GenSTART has no special operating procedures or maintenance requirements. The system provides years of reliable operations without intervention. GenSTART Starting Module adds reliability to your backup power systems that you can depend on.

Contact the SITEM team on SITEM’s official LINE account @sitem  or fill out the form at the end of this page for more information or any inquiries to SITEM’s products and services.

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