GE THMC990L - 100A, 3-Pole, Disconnect Switch

The GE THMC990L 100A 3-Pole Disconnect Switch is built for demanding industrial and commercial environments where safe, reliable electrical isolation is non-negotiable. Designed to support lockout/tagout procedures and deliver dependable disconnection under load, this switch stands up to the rigors of ongoing maintenance and equipment servicing with long-term durability in mind.

What makes the GE THMC990L stand out

• Precise 100A capacity—handles medium to heavy-load circuits with confidence, reducing the need for mid-project replacements.
• 3-Pole architecture—provides full phase isolation for safe maintenance and service work on three-phase systems.
• Lockout/Tagout compatibility—helps ensure worker safety and regulatory compliance during servicing, outages, and repairs.
• Disconnection under load—engineered to interrupt current reliably, minimizing downtime and enhancing protection for personnel and equipment.
• Rugged, durable design—built to withstand harsh environments typical of industrial and commercial facilities, delivering long service life.

Ideal use cases

Active in electrical rooms, manufacturing lines, and service areas where quick, safe isolation is required. Perfect for maintenance shuts on three-phase conveyors, pumps, HVAC systems, and power distribution panels. This switch reduces risk during routine inspections, component swaps, and emergency outages by clearly separating the load from the supply.

Why choose this GE disconnect over alternatives

Choose the THMC990L when you need a compact, purpose-built disconnect switch that combines robust current handling with straightforward safety features. It emphasizes dependable performance under load, reliable isolation during maintenance, and durability that minimizes downtime and replacement costs in demanding environments.

Specifications

• Amperage Rating: 100A
• Number of Poles: 3-Pole
• Product Type: Disconnect Switch
• Brand: GE
• Model: THMC990L