GE THMR3300 - 100A, 600V, Disconnect Switch

The GE THMR3300 is a purpose-built Disconnect Switch that delivers safe, reliable electrical isolation in industrial and commercial settings. With a 100A current rating and a 600V maximum, it’s engineered to withstand the demands of ongoing maintenance, servicing, and power distribution tasks where lockout/tagout (LOTO) procedures are essential.

Key benefits

• Safe isolation under load conditions — disconnect power confidently during service, reducing risk for personnel and equipment.
• LOTO-ready design — integrates smoothly with standard padlocks and tags to enforce compliance and crew safety.
• Durable, long-term performance — built for steady operation in busy facilities, helping minimize unplanned downtime.
• Simple, reliable operation — intuitive handle movement supports rapid disconnection during critical maintenance windows.

Specifications at a glance

• Amperage Rating: 100A
• Voltage Rating: 600V
• Product Type: Disconnect Switch
• Brand: GE
• Model: THMR3300

Ideal use scenarios

• Maintenance on motors, conveyors, pumps, and other equipment where safe isolation is critical.
• Line changes and equipment servicing in manufacturing facilities, data centers, and commercial spaces with significant electrical loads.
• Emergency or planned isolation points within electrical distribution panels and switchgear assemblies.

Who benefits from the THMR3300

• Facility engineers and maintenance teams seeking reliable isolation and LO TO compliance.
• Electrical contractors installing or upgrading panels and switchgear that require a robust disconnect switch.
• Operations leaders prioritizing safety, uptime, and regulatory adherence in daily operations.

Why this disconnect stands out

Compared with generic options, the THMR3300 emphasizes dedicated safety through lockout/tagout readiness and dependable disconnection under load, delivering predictable performance you can trust for routine maintenance and critical servicing alike.

Installation and best practices

Install in a location with clear access for safe operation, clearly label the switch, and pair with compatible lockout devices to maximize LOTO effectiveness. Adhere to local electrical codes and GE wiring guidelines to ensure proper mounting, connections, and safe clearances for long-term reliability.