Hubbell MD30 - 30A, Disconnect Switch

The Hubbell MD30 is a purpose-built 30A Disconnect Switch engineered for industrial and commercial environments that demand uncompromising electrical isolation. Designed to support lockout/tagout procedures, it provides a safe, dependable disconnection under load, helping maintenance teams work with confidence and compliance.

Whether you’re powering motor circuits, feeders, or line-side equipment, the MD30 delivers a clear, immediate isolation point that reduces downtime and minimizes risk during service and repair. Its robust construction is built to endure daily operations in demanding environments, offering long-term durability that you can trust year after year.

Key benefits and features

• 30 Ampere capacity: Suitable for mid-range circuit isolation without sacrificing reliability.
• Lockout/tagout readiness: Designed to integrate seamlessly with standard safety protocols, helping your team enforce secure maintenance procedures.
• Reliable under load: Delivers dependable disconnection when circuits are energized, ensuring a safe shutdown sequence.
• Industrial-grade durability: Built to withstand harsh environments common in manufacturing, facilities, and commercial buildings.
• Simple, straightforward operation: Easy to actuate and maintain, reducing training time and operator error.

Ideal use cases

The MD30 is an excellent choice for facility managers, electrical contractors, and plant engineers who need a proven isolation device for routine maintenance, equipment service, or safety-compliance workflows. Use it to isolate feeders, motor control centers, or critical power circuits during scheduled outages, preventative maintenance, or emergency shutdown procedures.

Why choose the Hubbell MD30 over other disconnect switches

This model prioritizes safety-forward design and reliable isolation in real-world conditions. By focusing on lockout/tagout compatibility and dependable performance under load, the MD30 minimizes risk and downtime, making it a practical, mission-critical component in any electrical safety toolkit.

Specifications at a glance

• Amperage Rating: 30A
• Product Type: Disconnect Switch
• Brand: Hubbell
• Model: MD30

Practical tips for installation and use

• Pair the MD30 with a compliant lockout device and clearly labeled tags to reinforce a secure maintenance process.
• Verify circuit isolation during routine checks and document the shutdown sequence as part of your safety procedures.
• Follow all applicable electrical codes and standard operating practices for mounting, wiring, and testing disconnect switches in your facility.