ZENITH 150 AMP AUTOMATIC TRANSFER SWITCH 3 POLE Phase ATS 480V 277v ISO Bypass Switch

Description:

The Zenith 150 Amp Automatic Transfer Switch (ATS) 3-pole 480/277V with isolation bypass is used in critical power distribution and backup power systems.
Commonly installed in hospitals, data centers, industrial plants, and commercial facilities requiring uninterrupted power supply.
Electrical engineers, facility managers, and system integrators use this switch for automatic power transfer, system redundancy, and maintenance bypass operations.

Applications:

The Zenith 150A 3-phase automatic transfer switch with isolation bypass is used in electrical systems to automatically transfer load between utility and generator power during outages. It is widely applied in mission-critical environments such as healthcare facilities, data centers, telecommunications, and industrial operations where continuous power is essential. The bypass/isolation feature allows the ATS to be serviced or tested without interrupting power to the load, ensuring maximum uptime and operational reliability. These systems are designed for fast switching, high fault tolerance, and seamless integration with generator backup systems.

Technical Specifications:

• Manufacturer: Zenith (GE Zenith / ABB Zenith Controls)
• Product Type: Automatic Transfer Switch (ATS) with Isolation Bypass
• Rated Current: 150 Amp
• Poles: 3-pole (3-phase)
• Voltage Rating: 277/480 VAC, 3-phase
• Frequency: 50/60 Hz
• Operation: Automatic transfer between normal (utility) and emergency (generator) sources
• Bypass Type: Isolation bypass (maintenance without load interruption)
• Switching Mechanism: Electrically operated, mechanically interlocked contact system
• Controller: Microprocessor-based controller (e.g., MX series)
• Transfer Time: Typically <100 ms switching speed
• Enclosure Options: NEMA 1, 3R, 4, or 12 (model dependent)
• Standards: UL 1008 / CSA / IEC compliant (model dependent)

Common Replacements:

• ASCO 300 Series 150A ATS
• Cummins BTA 150A ATS
• Thomson TS870 150A ATS