General Electric THMC34 - 200A, 3-Pole, Fused Disconnect Switch

The GE THMC34 200A 3-Pole Fused Disconnect Switch is engineered to deliver dependable electrical isolation in demanding industrial and commercial environments. With built-in fusing for overcurrent protection and a true three‑phase design, it provides reliable disconnection under load while supporting safe maintenance and system reliability.

Why this fused disconnect matters

• Three‑pole, 200A capacity: Ideal for all three‑phase circuits and motor feeders, providing robust isolation for medium‑to‑large electrical loads.
• Integrated fusing: Built‑in fuses deliver rapid fault clearance and added protection for downstream equipment, reducing arc energy and potential damage during faults.
• Lockout/Tagout readiness: Designed to support formal lockout/tagout procedures, helping crews secure the line during maintenance and ensure personnel safety.
• Durable, reliable performance: Built for industrial duty with a focus on long‑term reliability in demanding service conditions and frequent switching operations.

Ideal use cases

• Motor and equipment feeders in manufacturing lines, HVAC systems, and processing plants
• Primary isolation points in power distribution setups for service entrances and panels
• Maintenance disconnects where quick, safe disconnection under load is essential

Benefits and outcomes you can expect

With the THMC34, technicians gain a clear, formal point of isolation that supports safe work practices and compliance with lockout/tagout protocols. The fused design provides built‑in protection to downstream components, helping extend equipment life and reduce unexpected downtime from electrical faults. Its 3‑pole configuration ensures balanced isolation across all three phases, contributing to safer startup and shutdown sequences for three‑phase systems.

Technical snapshot

• Amperage Rating: 200A
• Number of Poles: 3‑Pole
• Product Type: Fused Disconnect Switch
• Brand: General Electric
• Model: THMC34

Practical tips for installation and use

Ensure installation is performed by a qualified electrician following applicable electrical codes. Verify fuse ratings and compatibility with your circuit loads, and plan the disconnect location to support straightforward access for routine testing and maintenance. Regularly inspect connections and replace compromised fuses to maintain optimal protection and reliability. When used as part of a formal lockout/tagout program, keep clear, retrievable LOTO devices on hand and train staff to follow established procedures for safe power isolation.