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STS Series

Static Transfer Switch

Sub-cycle transfer between two AC sources, continuously monitoring voltage, frequency and synchronisation.

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Models
0
Rating
16 – 800 A
Reference
STS

The Hannibal STS Series is a microprocessor-controlled thyristor static transfer switch designed to transfer critical loads between two independent AC sources without interruption.

The system continuously monitors voltage, frequency and synchronization, then transfers the load to the prioritized or available source. It is suited for data centers, telecommunications, industrial processes and critical-load electrical distribution.

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STSSingle-phaseSTSSingle-phase6 configurations · 16 – 150AView single-phase products →STSThree-phaseSTSThree-phase9 configurations · 50 – 800AView three-phase products →
Compare all 15 configurations in one table
Static Transfer Switch configurations by phase and current
Phase16A32A50A63A100A150A200A300A400A600A800A
Single-phase16A32A50A63A100A150A
Three-phase50A63A100A150A200A300A400A600A800A

Blank positions are ratings Hannibal does not build.

Across the STS range

Common technical platform

  1. Transfers critical loads between two independent AC sources without mechanical moving parts.
  2. Synchronized and asynchronous transfer support with selectable asynchronous transfer enable/disable.
  3. Selectable source priority via front panel and 2x16 LCD display.
  4. Thermal fuse and overvoltage protection at source inputs.
  5. Designed for data centers, telecom, industrial processes and sensitive critical power loads.
  6. IP20/IP21 standard ingress protection, with options up to IP66.

Options & accessories

  1. Fusible surge protection and maintenance bypass switch protection.
  2. Redundant fans, natural cooling plus smart fan system and cabinet color customization.
  3. Ingress protection up to IP66 and cable entry from top, side, bottom or rear.
  4. Touch panel with mimic diagram, auxiliary trip contact, earth fault protection and phase voltage/sequence protection.
  5. RS232/RS485 ports, Modbus RTU optional, SNMP optional, remote EPO optional, remote display panel optional and dry contact optional.

Standards & compliance

  1. EN62310-1, EN62310-2 and EN62310-3 static transfer system standards listed in catalogue.
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