General Electric THMS33 - 100A, 3-Pole, Disconnect Switch

General Electric THMS33 is a high-performance Disconnect Switch designed for industrial and commercial electrical systems that require safe and reliable isolation. Built to support critical lockout/tagout procedures and deliver dependable disconnection under load, it stands up to the rigors of demanding environments and long-term use.

With a 3-pole configuration, the THMS33 provides true three-phase isolation, ensuring all live conductors are safely disconnected for maintenance, testing, or service work. This design minimizes the risk of arcing or accidental energization, giving technicians peace of mind during critical downtime.

Designed to support lockout/tagout procedures, this switch helps facilities meet rigorous safety standards and regulatory requirements. By enabling clear, verifiable isolation, it protects workers and streamlines compliant maintenance workflows.

Durability and reliability are built into every detail. The THMS33’s robust construction and proven internal mechanism are engineered for repeated operation under load, delivering consistent performance in busy electrical rooms, factories, and commercial sites.

Specifications at a glance

• Amperage Rating: 100A
• Number of Poles: 3-Pole
• Product Type: Disconnect Switch
• Brand: General Electric
• Model: THMS33

Ideal applications

• Industrial environments such as manufacturing floors and equipment rooms requiring reliable isolation
• Commercial facilities performing regular electrical maintenance or equipment servicing
• Service disconnects for energy management, startup/shutdown procedures, and safety compliance

What sets the THMS33 apart

Unlike generic isolation devices, the THMS33 is a GE-designed disconnect switch purpose-built for demanding habitats where safety and reliability matter most. The three-pole architecture ensures full phase separation, supporting safe maintenance and accurate system testing. Its 100A rating is paired with sturdy construction that stands up to frequent use, providing dependable disconnection when it’s needed most.

Practical tips for getting the most out of your THMS33

• Integrate with your existing safety protocols by aligning the disconnect with your lockout/tagout program and clearly documented procedures.
• Verify compatibility with your distribution panels and mounting hardware to ensure a smooth installation.
• Schedule periodic function checks to confirm smooth operation under load and to detect wear before it affects performance.

Elevate electrical safety and reliability on your site with the General Electric THMS33 — a trusted, purpose-built solution for safe isolation, compliant maintenance, and durable performance in demanding environments.