3-12 - Disconnect Switch

Introducing the 3-12 Disconnect Switch, a high-performance safety switch purpose-built for industrial and commercial environments that demand safe electrical isolation, rock-solid reliability, and simple maintenance workflows. This is the model 12-Mar, designed to deliver dependable disconnection under load while supporting proper lockout/tagout procedures for a safer worksite.

Why operators choose this disconnect switch

• Lockout/Tagout readiness—engineered to work seamlessly with standard lockout devices and tags, helping teams meet safety regulations and keep maintenance crews protected during servicing.
• Reliable under load—built to interrupt circuits safely even when electrical load is active, reducing risk during routine maintenance or emergency isolation.
• NEMA 3 enclosure—a weather- and dust-resistant design that performs consistently in diverse environments, whether installed indoors, in sheltered outdoor areas, or exposure-prone locations.
• Durability for demanding environments—constructed to endure the day-to-day demands of industrial and commercial applications, delivering long-term performance with minimal downtime.
• Effortless integration—designed to fit into existing electrical layouts with straightforward installation and dependable interconnection with standard control circuits.

Ideal use cases

Perfect for industrial plants, manufacturing lines, and commercial facilities that require dependable safety isolation. Use the 3-12 Disconnect Switch to:

• Isolate motors, pumps, conveyors, and other equipment during maintenance or repairs
• Facilitate compliant lockout/tagout procedures to protect maintenance personnel
• Provide a reliable, clearly identifiable disconnect point for routine shutdowns and testing

Key specifications at a glance

• Model: 12-Mar (3-12 Disconnect Switch family)
• Enclosure rating: NEMA 3
• Product type: Disconnect Switch
• Designed for: Safe electrical isolation in industrial and commercial environments

With the 3-12 Disconnect Switch, you’re pairing a proven isolation device with practical, field-ready features that keep workers safe and systems running smoothly. It’s a thoughtful, purpose-driven solution for facilities that value reliability, safety, and easy compliance as much as performance.