General Electrics THQL2190ST1 - 90 A, 2-Pole Plug-In Circuit Breaker | AmpState

Meet the General Electrics THQL2190ST1 — a 90A, 2-pole plug-in molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for residential, commercial, and light industrial applications, this breaker keeps electrical systems safe, responsive, and easy to maintain. Available through AmpState, it’s a trusted solution for installers who demand solid performance and straightforward service.

• Fast plug-in connection: streamlined installation and easy replacement mean less downtime when upgrading or servicing panels.
• Thermal-magnetic trip unit: delivers stable overload protection with precise thermal response and instantaneous magnetic trips for short circuits, ensuring consistent protective action.
• 2-pole, 90A design: supports typical 240V circuits and higher-demand branches found in modern panel layouts, helping you manage load without oversizing protection.
• Plug-in mounting: simplifies field work and future upgrades by eliminating complex wiring—just plug in and go in compatible enclosures.
• OEM-compatible fit: guaranteed compatibility with matching General Electrics load centers and panelboards, preserving coordination and system reliability.
• Versatile use cases: ideal for service panels in homes, small to mid-size commercial spaces, and light industrial environments where reliable protection matters.

Specifications at a glance

• Manufacturer: General Electrics
• Part Number: THQL2190ST1
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 90A
• Number of Poles: 2
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection
• Compatibility: Compatible with matching OEM load centers and panelboards

Why this breaker stands out

Beyond its basic specs, the THQL2190ST1 is built for real-world reliability. The combination of a thermal-magnetic trip unit and a plug-in design translates to predictable protection behavior, quick swaps during panel upgrades, and fewer field wiring concerns. For property managers and electrical contractors, this means faster project timelines, safer electrical environments, and maintenance that doesn’t disrupt daily operations.

Practical use and installation considerations

• Use in panelboards and load centers that specify compatibility with the THQL family for consistent protection coordination.
• In service scenarios, plan for a 90A branch circuit to handle elevated loads while maintaining proper conductor sizing and enclosure clearance.
• Always de-energize equipment and follow standard safety practices when replacing plug-in breakers to avoid shock or equipment damage.