General Electrics THKMA836450 - 450 A, 3-Pole Bolt-On Circuit Breaker | AmpState

The General Electrics THKMA836450 is a 450A, 3-pole bolt-on molded-case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built to withstand vibration and heavy use, this device helps keep critical electrical systems safe and up to code in a range of environments from homes to light industrial facilities.

Why this breaker stands out

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection that stays tight through equipment soft starts, motor loads, and routine facility cycling.
• Thermal-magnetic trip unit delivers stable, repeatable protection by intelligently addressing both sustained overloads and instantaneous short circuits, reducing nuisance trips while ensuring fast fault clearing.
• OEM-compatible design pairs seamlessly with matching GE OEM load centers and panelboards, simplifying replacement projects and minimizing integration concerns.
• Three-pole configuration is ideal for three-phase distribution, common in commercial and light industrial applications, delivering balanced protection across all phases.
• High-amperage capability with a 450A rating to support demanding feeders and larger service equipment without compromising protection.

Where it fits best

Ideal for residential service upgrades, commercial electrical rooms, and light industrial installations where robust branch-circuit protection is essential. This bolt-on MCCB is particularly well-suited for panelboard upgrades, retrofit projects, or new installations that rely on GE-compatible components for streamlined maintenance and serviceability.

Technical highlights

• Manufacturer: General Electric
• Part number: THKMA836450
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 450 A
• Number of poles: 3
• Mounting style: Bolt-on
• Applications: Branch circuit overcurrent and short-circuit protection

Practical guidance for use

When selecting this breaker, confirm compatibility with your GE panelboard or load center family to ensure proper fit and electrical performance. The bolt-on design supports secure, long-term connections in environments subject to vibration, frequent motor starts, or mechanical activity. For maintenance planning, pairing this 450A unit with matching GE devices can simplify stocking and future replacements, helping you maintain consistent protection across your installation.

In short, the THKMA836450 is a purpose-driven choice for reliable, high-capacity three-phase protection in panelboards and load centers, combining a rugged bolt-on mount, stable thermal-magnetic protection, and OEM-aligned compatibility to keep circuits safe and serviceable.