ABB / GE TEY320ST12 20 Amp 3 Pole Thermal Magnetic Circuit Breaker – Bolt-On – 120/240/480Y/277V AC

The ABB / GE TEY320ST12 20 Amp three-pole miniature molded case circuit breaker is designed for commercial and industrial electrical systems requiring dependable protection and remote control capability. Part of the GE Q-Line TEY series, it features thermal-magnetic LI (Long-Time and Instantaneous) trip protection for safe and stable operation under overload and short-circuit conditions. This model includes a factory-installed 120V shunt trip, enabling remote disconnection of circuits for enhanced system control and safety. Its bolt-on design ensures a secure installation in GE A-Series panelboards. With an interrupt rating of 14kA at 480Y/277V, it is suitable for demanding electrical environments.

Voltage and Rating

• Current Rating: 20 Amps
• Voltage Rating: 120VAC, 240VAC, 480Y/277VAC, 250VDC, 120/240VAC
• Frequency: 50/60 Hz
• Interrupting Capacity:
  • 65kA @ 120VAC
  • 65kA @ 240VAC
  • 14kA @ 480Y/277VAC
  • 10kA @ 250VDC
  • 65kA @ 120/240VAC
• 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
• Compatible Panelboards: GE A-Series Panelboards
• Shunt Trip: Factory-installed 120V
• Construction Features: HACR Rated, HID Rated, Common Trip, Quick-Make/Quick-Break, Non-Interchangeable Trip
• Accessories Available: Auxiliary Switch, Undervoltage Release, Padlock Attachment, Handle Lock

Technical Specifications

• Wire Size Range: 14–8 AWG (Cu), 12–8 AWG (Al)
• Max Wire: 8 AWG
• Min Wire: 14 AWG
• Terminal Type: Load Side Lugs Included
• Trip Technology: Thermal Magnetic
• Trip Adjustability: Fixed
• Temperature Rating: 40°C
• Certifications/Approvals: UL 489, CSA C22.2 No. 5.1, CSA, HACR, HID, UL Listed

Product Data

• Manufacturer: ABB / General Electric
• Part Number: TEY320ST12
• Series: TEY
• Family: Q-Line

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You may return items within 30 days of delivery for a refund.

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