ABB / GE TEY3100ST12 100 Amp 3 Pole Thermal Magnetic Circuit Breaker – Bolt-On – 120/240/480Y/277V AC

The ABB / GE TEY3100ST12 100 Amp three-pole molded case circuit breaker is designed for high-performance commercial and industrial power distribution systems. Part of the GE Q-Line TEY series, it provides reliable thermal-magnetic LI (Long-Time and Instantaneous) protection for branch circuits. This compact MCCB features a factory-installed 120–277VAC shunt trip mechanism, enabling remote tripping capability for enhanced system control and safety. Its bolt-on mounting design ensures a secure installation in GE A-Series panelboards. With high interrupt ratings up to 65kA at 120/240V and 14kA at 480Y/277V, it delivers strong fault current protection for demanding electrical environments.

Voltage and Rating

• Current Rating: 100 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 120–277VAC
• Accessories Available: Auxiliary Switch, Undervoltage Release, Bell Alarm, Padlock Attachment
• Construction Features: HACR Rated, Common Trip, Quick-Make/Quick-Break, Trip-Free Mechanism, Non-Interchangeable Trip

Technical Specifications

• Wire Size Range: 4–1/0 AWG (Cu/Al)
• Max Wire: 1/0 AWG
• Min Wire: 4 AWG
• Terminal Type: Line and Load Lugs Included
• Trip Technology: Thermal Magnetic
• Trip Adjustability: Fixed Thermal, Fixed Magnetic
• Temperature Rating: 40°C
• Certifications/Approvals: UL 489, CSA C22.2 No. 5, CSA, HACR, UL Listed

Product Data

• Manufacturer: ABB / General Electric
• Part Number: TEY3100ST12
• 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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