Thomson TS870SE | 400A 3-Phase Service Entrance Rated Automatic Transfer Switch
- 400A service entrance rated automatic transfer switch, three-phase
- Open transition (break-before-make) operation with optional closed transition
- TSC 7320 digital controller with backlit LCD display and programmable inputs/outputs
- UL 1008 and CSA C22.2 No. 178 listed
- Available in NEMA 1 standard or NEMA 3R outdoor enclosure options
Key Features:
- 400A continuous service entrance rated capacity, three-phase, up to 600VAC, 3-wire or 4-wire systems
- Two mechanically interlocked power switching units for inherent source separation and reliable operation
- Open transition (break-before-make) as standard — prevents out-of-phase load transfers for full equipment protection
- Optional closed transition (make-before-break) for seamless transfers with zero interruption time
- Heavy-duty brushless gearmotor and operating mechanism for extended service life and mechanical reliability
- TSC 7320 microprocessor digital controller with 2.3″ backlit LCD for real-time monitoring of voltage, frequency, and load status
- Fully adjustable time delays for engine start, engine cool-down, transfer, and retransfer
- Five pre-programmed output contacts for core ATS functions: Load on Utility, Load on Generator, Load Disconnect, Fail to Transfer, and ATS Not in Auto
- 2-wire dry contact for automatic generator start — integrates with most standby generator systems
- Built-in programmable exerciser timer for scheduled on-load or off-load testing
- Local and remote utility power failure simulation test capability
- Under/over frequency protection for both utility and generator sources
- Three-phase overvoltage, phase loss, and phase unbalance protection
- RS485 Modbus remote communication port for system integration
- Bypass isolation option available for maintenance without power interruption
- Pad-lockable service disconnect control switch for enhanced personnel safety
- Meets NFPA 110 requirements for emergency and standby power systems
- UL 1008 and CSA C22.2 No. 178 listed
Applications:
- Commercial and industrial facilities
- Healthcare and hospital critical systems
- Data centers and mission-critical infrastructure
- Wastewater treatment and utility operations
- Manufacturing and industrial plants
- Commercial and institutional buildings
Voltage Range: 120V to 600VAC, 3-phase, 50/60Hz
