Series 70: eSTS 150 A - 1200 A

The LayerZero Power Systems Series 70: eSTS is a Static Transfer Switch, designed to switch between multiple power sources very fast - less than a quarter of an electrical cycle. The eSTS features a solid-state transfer switch that automatically or manually provides static transfers between two AC sources. The eSTS is a MISO Configuration (Multiple Inputs, Single Output), and is ready to accept either 2 or 3 power sources. If the primary source goes out of specification, eSTS transfers to the secondary (backup) source.

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eSTS Product Overview

The Series 70: eSTS Static Transfer Switch contains a control section and circuit breaker section.

The control section contains the System Control Data Boards, SCR Gate Drives, a Redundant Power Supply System, an IO System, and VPN Router. The circuit breaker section contains SCRs, Snubber Circuits, Heat Sinks, and Circuit Breakers.

eSTS with Mimic
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eSTS Mechanical Overview

eSTS Interior
eSTS Outer Door Open
eSTS Static Transfer Switch Exterior

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Reliability, Safety, Convenience, and Monitoring Features

eSTS Value Engineering

Connectivity Options

eSTS Connectivity

eSTS Technical Specifications

eSTS Models with Withstand Ratings
  120/208 V 480 V; 480/277 V; 415/240 V; 400/230 V; 220/380 V 600 V; 600/347 V; 575 V
150 A 150kA; 100kA; 65kA 150kA; 100kA; 65kA; 35kA 100kA; 65kA; 35kA; 25kA
250 A
400 A
600 A
800 A 100kA; 65kA 100kA; 65kA; 50kA; 35kA 42kA; 35kA; 25kA
1200 A 100kA*; 65kA; 50kA 42kA; 35kA; 25kA


Mechanical Characteristics
  150 A - 250 A 400 A 600 A 800 A 1200 A
Heat Dissipation 4,750 BTU / Hr 7,000 BTU / Hr 9,500 BTU / Hr 12,500 BTU / Hr 24,000 BTU / Hr
Weight 1,350 lbs 1,400 lbs 1,500 lbs 1,950 lbs 5,500 lbs
Dimensions 48"W x 36"D x 80"H 58"W x 36"D x 80"H 96"W x 48"D x 90"H

eSTS Brochure Download

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