The GE TEY390ST12 90 Amp three-pole molded case circuit breaker is designed for reliable commercial and industrial power distribution applications. Part of the GE Q-Line TEY series, it features a compact one-inch-per-pole construction with a bolt-on mounting system for secure installation in compatible panelboards. This breaker includes a factory-installed 120–277VAC shunt trip, allowing remote tripping for enhanced safety and control in electrical systems. It uses thermal-magnetic LI (Long-Time and Instantaneous) protection to safeguard circuits against overload and short-circuit conditions. Quick-make/quick-break operation, a common trip mechanism, and visible trip indication provide improved safety and fault identification.
Voltage and Rating
- Current Rating: 90 Amps
- Voltage Rating: 480Y/277VAC (grounded systems)
- Frequency: 50/60 Hz
- Interrupting Capacity: (TEY standard typically up to 14 kA @ 480V system)
- Phase: 3 Phase
Key Specifications
- Breaker Type: Molded Case Circuit Breaker (MCCB)
- Trip Function: LI (Long-Time & Instantaneous)
- Protection Type: Thermal Magnetic
- Number of Poles: 3-Pole
- Series: GE Q-Line TEY
- Mounting Style: Bolt-On
- Application: Commercial and industrial power distribution
- Shunt Trip: Factory-installed 120–277VAC
- Construction Features: Quick-Make/Quick-Break, Common Trip, Visual Trip Indication
- Accessories Available: Auxiliary contact, shunt trip options
Technical Specifications
- Wire Connection Type: Lug-lug / bolt-on mounting base
- Trip Technology: Thermal Magnetic
- Trip Adjustability: Fixed thermal and magnetic settings
- Temperature Rating: 40°C
- Standards/Approvals: UL 489, CSA C22.2 No. 5 (TEY series compliant)
Product Data
- Manufacturer: General Electric (GE)
- Catalog Number: TEY390ST12
- UPC: 783164196696
- Series: TEY
- Type: MCCB
- Type Thermal Magnetic
- Vendor GE
- Brand GE
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You may return items within 30 days of delivery for a refund.
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