General Electric | TEY390ST12 | Circuit Breaker | 90A | 3-Pole | 480V | Bolt-On

The General Electric TEY390ST12 circuit breaker is a robust, high-rumidity-ready protective device designed for demanding 480V three-phase systems. With a 90A rating and a 3-pole configuration, this bolt-on breaker delivers reliable, secure overcurrent protection for industrial panels, motor control centers, and retrofit projects. Built to simplify field servicing, it’s an ideal choice when you need dependable protection that fits neatly into existing GE-based electrical architectures.

Key specifications

• Amperage: 90A
• Poles: 3-Pole
• Voltage: 480V
• Mounting: Bolt-On
• Part reference: TEY390ST12

Why this GE circuit breaker stands out

• Secure bolt-on mounting offers a durable connection with straightforward installation in compatible panels and enclosures.
• Three-pole configuration ensures simultaneous disconnection of all phases, enhancing safety for high-load, three-phase circuits.
• 90A protection is well-suited for feeders and motor circuits, providing precise protection for mid-size industrial equipment.
• Designed for retrofit and replacement scenarios, making it a practical upgrade for aging systems that rely on GE components.
• Part-number fidelity (TEY390ST12) helps you verify compatibility quickly, reducing search time during maintenance or upgrades.

Ideal use cases

• Retrofitting old industrial panels to restore reliable overcurrent protection in 480V three-phase installations.
• Replacing worn or obsolete breakers in motor control centers, large conveyors, or HVAC equipment that run on 480V systems.
• Maintenance and service upgrades in manufacturing lines where consistent, quick-to-install protection is essential.
• New installations that require a proven GE solution with a bolt-on mounting approach for durable field assembly.

Note: Confirm fit and ratings before ordering. The TEY390ST12 part number is the best reference for compatibility with your equipment and panel configuration.