Automatic Transfer Switch (ATS)
Seamless Power Transfer Between Utility and Generator
Saudi Arabia's trusted ATS panel manufacturer since 1973. Custom-engineered automatic transfer switches and generator transfer switches built in-house to IEC 60947-6-1 and SASO standards, with fast transfer times, intelligent monitoring, and complete testing documentation.
What is an ATS panel?
An Automatic Transfer Switch (ATS), also called an automatic changeover switch or generator transfer switch, is a critical power management device in backup power systems that automatically transfers electrical loads between utility power and a standby generator, ensuring uninterrupted operation during grid outages. When the ATS panel detects utility failure through continuous voltage and frequency monitoring, it immediately starts the backup generator and seamlessly transfers the load once stable power is confirmed.
Types of Automatic Transfer Switch Panels
By Transfer Speed:
- Fast Transfer ATS : <0.5 seconds (prevents ride-through capacitor discharge in UPS systems, computer power supplies, and sensitive electronics; critical for data centers)
- Standard Transfer ATS : 5-10 seconds (suitable for lighting, HVAC, and motor loads with mechanical inertia)
- Delayed Transfer ATS : Programmable delay (accommodates motor starting sequences in industrial applications)
By Switching Mechanism:
- Contactor-Type ATS : Heavy-duty contactors for load switching (100A-1600A range)
- Circuit Breaker-Type ATS : Motorized circuit breakers with overcurrent protection (630A-4000A range)
By Transition Type:
- Open Transition : Brief interruption during transfer, prevents backfeeding
Closed Transition : Seamless transfer with momentary parallel operation for sensitive loads
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Key Features for automatic transfer switch
- Intelligent microprocessor controllers monitoring voltage, frequency, and phase sequence
- Programmable transfer/retransfer delays and engine start/stop sequences
- Electrical and mechanical interlocks preventing simultaneous source connection
- Generator exercising timers for periodic load testing
- Remote monitoring integration (Modbus RTU/TCP, dry contacts)
- Event logging and fault diagnostics
- Manual override and test mode operation
Premium Components: ABB, Schneider Electric, or Siemens contactors and circuit breakers with Deep Sea Electronics (DSE) or ComAp microprocessor controllers.
Why Choose Samman Group ATS Panels?
- Manufactured In-House in Saudi Arabia
We engineer and fabricate each automatic transfer switch at our Saudi facility, not import and rebadge. Direct engineering access, 4-6 week lead times, and complete quality control.
- Custom Engineering for Your Loads
Every ATS panel is designed to your load profile and generator specifications. Load prioritization schemes and communication protocols matched to your facility, not forced catalog configurations.
- Fully Tested with Documentation
Factory Acceptance Testing (FAT): transfer time verification, interlock testing, and controller programming validation. Complete SASO compliance certificates are included.
- Generator Brand Compatibility
Pre-configured for Caterpillar, Cummins, Perkins, and FG Wilson. Controller programming includes brand-specific start/stop sequences and communication protocols.
- Local Engineering Support
Engineers in Riyadh, Jeddah, and Dammam provide pre-sales load analysis, installation supervision, controller programming, and commissioning support throughout KSA.
Samman Group – Electrical Panels Division, 50+ Years of Electrical Manufacturing Excellence in Saudi Arabia
✔ IEC & SASO Certified
✔ In-House Engineering
✔ Local Support Across KSA
✔ 1000+ Projects Delivered
FAQs for automatic transfer switch
Yes, a manual bypass is provided for maintenance or testing purposes.
Our ATS units are available for both configurations, with full voltage monitoring.
Yes, Al Samman Group provides generator synchronization and load-sharing solutions integrated with the ATS.
An automatic transfer switch (ATS) automatically transfers the electrical load from the main power source to a backup source, such as a generator, when the primary supply fails. It also switches the load back to the main source once normal power is restored.
An ATS continuously monitors the main power supply. When it detects a power failure or abnormal voltage, it sends a signal to the backup generator and transfers the load to the available backup source. Once the main supply returns to normal, the ATS safely transfers the load back.
A 3 phase ATS is an automatic transfer switch designed for three-phase electrical systems. It automatically switches three-phase loads between the main power source and a backup source while helping maintain a reliable and continuous power supply.
An ATS circuit is the electrical control and switching arrangement that allows an automatic transfer switch to monitor power sources and transfer the load between them. It typically includes sensing, control, and switching components to ensure safe and automatic power transfer.