Samlex STS-30 Auto transfer switch

Samlex STS-30 30A Automatic Transfer Switch

Ensure seamless and reliable power management in your RV, boat, or off-grid system with the Samlex STS-30 Automatic Transfer Switch. This robust 30 Amp switch is the central nervous system for your AC electrical setup, intelligently managing power from two separate sources to provide uninterrupted electricity to your appliances. Designed for safety, convenience, and durability, the STS-30 eliminates the need for manual plug-ins and complex wiring changes, giving you true hands-free operation and peace of mind.

Connect a Samlex Transfer Switch to your generator, or to your inverter/battery bank and have your AC source switched automatically to shore power when you plug in. The unit prioritizes the primary AC source (typically shore power or a generator) and instantly switches to the secondary source (like your inverter) the moment the primary power is disconnected or fails. This ensures your sensitive electronics, refrigerators, and other essential loads continue to run without interruption.

Key Benefits:

* Uninterrupted Power Supply: Automatically transfers AC loads to a secondary power source, like an inverter, when shore power or generator power is lost. This seamless transition protects sensitive electronics and ensures continuous operation of critical appliances.
* Enhanced Safety and Compliance: The heavy-duty Double Pole Double Throw (DPDT) relay prevents dangerous back-feeding from the inverter to the utility grid or generator. This critical safety feature protects line workers and your equipment, ensuring compliance with electrical codes.
* Generator Compatibility: A user-selectable 10 or 20-second time delay allows your generator to warm up and stabilize its voltage output before the load is transferred. This protects your connected appliances from power surges and unstable initial output.
* Built for Reliability: Engineered with heavy-duty components and housed in a rugged metal enclosure, the STS-30 is designed to withstand the demanding conditions of mobile and marine environments. Its UL and cUL certifications guarantee adherence to the highest safety and performance standards.
* Simplified Installation: Features clearly labeled terminal blocks for hard-wiring AC input and output connections, making installation straightforward for qualified technicians. Intuitive LED indicator lights provide an at-a-glance status of which power source is active.

Main Features:

* 30 Amp AC switching capability at 120 VAC
* Handles two separate AC input sources
* Heavy-duty DPDT relay for reliable switching
* Selectable 10 or 20-second time delay for generator stabilization
* LED indicators for power source status (Primary or Secondary)
* Hard-wire terminal block connections
* Durable and compact metal chassis
* UL and cUL Listed for safety and quality assurance

Technical Specifications:

* Attribute: Switch
* Input Voltage: 120 VAC, 60 Hz
* Input Current: 30 Amps
* Output Voltage: 120 VAC, 60 Hz
* Output Current: 30 Amps
* Transfer Time: < 40 milliseconds (after time delay)
* Time Delay Switch: Selectable 10 or 20 seconds
* Connections: Hard-wire terminal blocks
* Safety Certification: Certified to UL-1008 and CSA C22.2 No. 178.1-07
* Dimensions (L x W x H): 7.5x6.9x3.1 inches / 190x175 x 79 mm
* Weight: 2.6 lbs / 1.2 kg

Perfect for RVs, marine applications, mobile service vehicles, and off-grid power systems, the Samlex STS-30 Automatic Transfer Switch is the professional choice for safe, automated, and dependable AC power management. Upgrade your electrical system today and enjoy the convenience of a truly smart power solution