Power Distribution
STS (Static Transfer Switch)
1U rack-mount static transfer switch, dual-source redundancy with <10ms seamless transfer.
Overview
Product Overview
The Wandtung STS (Static Transfer Switch) is a 1U rack-mount solid-state transfer switch that seamlessly transfers load between two independent A/B power sources in under 10ms — far faster than a mechanical ATS — protecting loads that cannot tolerate even momentary interruption. Front-panel Source 1/Source 2/Output status indicators and a mute button give at-a-glance status and alarm control, with terminal-block source and output connections on the rear panel.
Capabilities
Key Features
- Seamless transfer, <10ms switching time
- Dual independent A/B source inputs for power redundancy
- 1U rack-mount form factor
- Front-panel Source 1 / Source 2 / Output status LEDs
- Mute button for audible alarm control
- Terminal-block source and output connections
- C13/C19 IEC output outlets (model dependent)
Specifications
Technical Specifications
Electrical Parameters
| Form Factor | 1U rack-mount |
|---|---|
| Inputs | Dual independent A/B source (terminal block) |
| Transfer Time | Seamless, <10ms |
| Output | C13/C19 IEC outlets and/or terminal-block output |
Monitoring & Control
| Status Indicators | Source 1 / Source 2 / Output front-panel LEDs |
|---|---|
| Alarm Control | Front-panel mute button |
Deployment
Applications
- Facilities requiring zero-interruption transfer
- Upstream of critical PDU/UPS distribution
- Data centers with dual utility feeds
Configuration
Customization Options
- Current rating
- Output outlet configuration
- Monitoring package
Standards
Compliance & Standards
FAQ
Frequently Asked Questions
What is the difference between an ATS and an STS?
An ATS (automatic transfer switch) mechanically switches load between two power sources, typically with a brief transfer time, while an STS (static transfer switch) uses solid-state switching for near-instantaneous transfer, used where even momentary interruption is unacceptable.
How fast does the STS transfer between sources?
The Wandtung STS performs a seamless transfer between Source 1 and Source 2 in under 10ms, fast enough that connected IT equipment does not register an interruption.
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