General Electrics TEY370ST12 - 70 A, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the General Electric TEY370ST12, a 70 A, 3-pole bolt-on molded case circuit breaker engineered for dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Built to integrate seamlessly with matching OEM enclosures, this unit delivers reliable protection where it matters—home electrical panels, commercial distribution boards, and light industrial circuits.

• Secure bolt-on mounting provides a rigid, vibration-resistant connection to the bus, maintaining consistent electrical performance even in environments with equipment movement or vibration.
• Thermal-magnetic trip unit delivers stable, repeatable protection by quickly responding to both overloads and short circuits, reducing nuisance trips and protecting wiring and devices.
• 3-pole configuration ensures synchronized protection across all phases, which is essential for balanced loads and safe operation of three-phase systems.
• Molded case design combines compact form with durable insulation, simplifying installation in crowded panels and improving heat management under load.
• OEM-compatible engineered to work with the corresponding General Electric loadcenters and panelboards, streamlining replacement and upgrade projects.

What problems does it solve? The TEY370ST12 guards electrical feeders against overcurrent conditions that can cause wiring damage, equipment failure, or fire risk. Its thermal-magnetic trip mechanism provides predictable and dependable interruption during sustained overloads and sudden short circuits, helping keep critical circuits protected without unnecessary disruption.

Ideal for: electricians, facilities managers, and electrical contractors working on residential, commercial, and light industrial projects. Whether upgrading an aging panel, replacing a failed breaker, or stocking spare parts for service calls, this unit fits standard General Electric panelboards and loadcenters that require a 70 A, 3-pole bolt-on breaker.

Use cases and practical guidance

• Upgrading service panels in multifamily housing where dependable phase protection and secure mounting reduce maintenance calls.
• Mid-scale commercial installations with three-phase equipment, where synchronized trip across all poles is essential for safety and equipment protection.
• Electrical retrofit projects in light industrial facilities that demand a rugged bolt-on solution capable of withstanding vibration and heat buildup.

Compared to non-bolt-on or less robust trip designs, the TEY370ST12 prioritizes long-term reliability and ease of servicing. Its bolt-on style creates a solid electrical connection that resists loosening over time, while the thermal-magnetic mechanism minimizes unwanted trips and maintains protective performance as ambient conditions change.

Technical at a glance: General Electric TEY370ST12, 70 A, 3 poles, bolt-on mounting, molded case circuit breaker for branch circuit overcurrent and short-circuit protection. This unit is purpose-built to deliver dependable protection in residential, commercial, and light industrial panelboards and loadcenters.