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100 Amp Static Transfer Switch Automatic/Manual/Remote - 120V 1PH 2P3W 50-60Hz, NEMA 1

$22944.00

100 Amp Static Transfer Switch Automatic/Manual/Remote - 120V 1PH 2P3W 50-60Hz, NEMA 3R

$2053.75

100 Amp Static Transfer Switch Automatic/Manual/Remote - 120V 1PH 3P4W 50-60Hz, NEMA 1

$23900.00

100 Amp Static Transfer Switch Automatic/Manual/Remote - 208V 3PH 3P3W 60Hz, NEMA 1

$27225.45

100 Amp Static Transfer Switch Automatic/Manual/Remote - 480V 3PH 3P4W 50-60Hz, NEMA 1

$27225.45

1000-amp Static Transfer Switch - 480V 3 Phase 3 Wire - NEMA 1

$38556.36

1000-amp Static Transfer Switch - 480V 3 Phase 4 Pole (4 Wire) - NEMA 3R

$42412.00

120-amp Static Transfer Switch - 208V 3 Phase 3 Pole (3 Wire) - NEMA 1

$9860.00

120-amp Static Transfer Switch - 208V 3 Phase 4 Pole (4 Wire) - NEMA 1

$7485.21

120-amp Static Transfer Switch - 208V 3 Phase 4 Pole (4 Wire) - NEMA 3R

$8316.90

200-amp Static Transfer Switch - 480V 3 Phase 3 Pole (3 Wire) - NEMA 3R

$13920.00

200-amp Static Transfer Switch - 480V 3 Phase 4 Pole (4 Wire) - NEMA 3R

$3418.83

250-Amp Static Transfer Switch - 208Y/120 3PH, 4Wire - Aluminum - NEMA 12

$8558.76

250-Amp Static Transfer Switch - 480V 3PH, 4Wire - Aluminum - NEMA 12

$6358.76

28.86-Amp Static Transfer Switch - 400V 3 Phase 4 Pole (4 Wire) - IP54 Wall Mount - Intelligent Static Transfer Switch

$13995.00

400-Amp Static Transfer Switch - 208Y/120 3PH, 4Wire - Aluminum - NEMA 12

$11030.84

600 Amp Static Transfer Switch Automatic/Manual/Remote - 480V 3PH 3P4W 50-60Hz, NEMA 1

$54450.94

600A Static Transfer Switch – 200-480V/600V, 3-Phase, 3-Pole (3-Wire) – Solid-State – NEMA 3R

$34850.00

600-amp Static Transfer Switch - 480V 3 Phase 4 Pole (4 Wire) - NEMA 3R

$11643.66

600-amp Static Transfer Switch - 480V 3 Phase 4 Pole (4 Wire) - NEMA 3R

$10256.48

Data Center Static Transfer Switches (STS)

Larson Electronics provides advanced Static Transfer Switches (STS) engineered for data center applications that demand continuous uptime and seamless power source switching. Designed for mission-critical operations, our STS units ensure uninterrupted power delivery by automatically transferring between redundant sources in less than a cycle — safeguarding servers, network gear, and facility systems from costly outages.

Reliable Power Switching for Mission-Critical Environments

Instantaneous transfer – Solid-state design enables ultra-fast transfers between two independent power sources with zero-crossing synchronization for uninterrupted loads.
True redundancy – Supports dual utility, UPS, or generator inputs to maintain continuous availability under fault or maintenance conditions.
Seamless operation – Microprocessor-controlled logic continuously monitors voltage, frequency, and waveform integrity to select the optimal source.
High reliability architecture – Incorporates dual control paths, redundant logic, and bypass options for serviceability without downtime.
Data center ready – Built to integrate with modern electrical infrastructure, including PDUs, RPPs, and UPS systems, to complete N+1 and 2N topologies.

Key Features & Benefits

Fast, automatic transfer – Typically under 4 ms transfer time to maintain continuity for sensitive IT loads.
Flexible input configurations – Compatible with single-phase and three-phase systems at common data center voltages (208V, 415V, 480V).
Advanced monitoring and control – Equipped with digital displays, alarms, and remote interfaces for BMS/EPMS integration.
Maintenance bypass options – Manual or automatic bypass configurations allow safe servicing without loss of load.
Scalable designs – Available in modular rack-mounted and floor-standing enclosures to fit both edge and hyperscale facilities.
Rugged reliability – Industrial-grade components ensure stable performance in continuous-duty environments.

Applications

Hyperscale data centers – Maintain redundancy and availability across A/B feed systems with dual UPS or utility inputs.
Enterprise facilities – Protect critical servers, storage, and network infrastructure against input source interruptions.
Colocation and edge deployments – Provide compact, rack-level switching for distributed environments requiring high uptime.
Generator or UPS transitions – Support smooth transfer between backup and primary power sources during maintenance or testing.

Why Choose Larson Electronics STS Systems

With decades of experience in power distribution, Larson Electronics understands the demands of continuous operation in mission-critical settings. Our Static Transfer Switches are built to the highest quality standards, integrating the speed, intelligence, and reliability data centers need to sustain uptime and protect valuable infrastructure. We offer configurable designs, rapid quoting, and technical support from concept through installation and lifecycle maintenance.

Explore Larson Electronics’ Static Transfer Switch solutions to enhance redundancy, reliability, and uptime in your facility. Contact our technical team for configuration support or custom builds tailored to your project’s power design requirements. Contact Larson Electronics today to discuss your application.

Larson Electronics – Building Trust Since 1973.