General Electrics THJK636500 - 500 A, 3-Pole Bolt-On Circuit Breaker | AmpState

When your electrical system demands serious protection, the General Electrics THJK636500 delivers reliable, rugged performance for panelboards and load centers. This 500 A, 3‑pole bolt‑on molded case circuit breaker is engineered to guard heavy feeders and three‑phase circuits with precision and longevity.

Key advantages at a glance

• Secure bolt‑on mounting creates a rigid, vibration‑resistant bus connection, reducing movement under load and extending service life.
• Thermal‑magnetic trip unit provides stable, repeatable protection against both overloads and short circuits, helping to prevent nuisance trips while safeguarding connected equipment.
• OEM‑matched compatibility is designed to pair seamlessly with GE‑style load centers and panelboards, ensuring predictable fit and coordinated protection across the system.
• Versatile applications suits residential, commercial, and light industrial environments where robust protection is essential for large feeders and three‑phase circuits.

Who this is for

Ideal for installers and facility engineers managing larger distribution panels, service upgrades, or retrofits where a 500 A main or feeder protection device is required. Perfect for commercial spaces with three‑phase equipment, HVAC systems, motors, pumps, or heavy electrical loads that demand dependable tripping characteristics and durable construction.

Real‑world use cases

• Protecting a 3‑phase distribution feeder in a commercial panelboard serving lighting, receptacles, and small machinery.
• Serving as a main breaker or large feeder in a load center of a light industrial facility with high current demands.
• Replacing aging or incompatible units during panel upgrades to maintain system safety and continuity.

Specifications at a glance

• Manufacturer: General Electrics
• Part Number: THJK636500
• Type: Thermal‑magnetic molded case circuit breaker
• Amperage Rating: 500 A
• Number of Poles: 3
• Mounting Style: Bolt‑on
• Applications: Branch circuit overcurrent and short‑circuit protection in panelboards and load centers; suitable for residential, commercial, and light industrial environments

Why this design matters

In complex electrical setups, protecting large feeders from overloads and faults is critical to uptime and safety. The THJK636500’s bolt‑on construction reduces mechanical stress on bus connections, while the thermal‑magnetic trip mechanism delivers predictable response across temperature changes and fault conditions. By choosing a unit that’s designed to integrate with GE OEM panels, you gain a coherent protection strategy—with fewer mismatches and more reliable coordination across protective devices.