Allen-Bradley 194R-NJ400P3 - 400A, 600V, 3-Pole, Fused Disconnect Switch

The Allen-Bradley 194R-NJ400P3 is a rugged, industrial-grade fused disconnect switch that delivers reliable electrical isolation where it matters most. With a 400A rating at 600V and a true 3-pole design, this device provides a clean, decisive disconnect path for power to critical equipment while supporting essential lockout/tagout procedures for safe maintenance and servicing.

Built for long-term durability in demanding environments, the 194R-NJ400P3 combines robust switching capability with quick, controlled fault interruption. Its fuse-based protection helps limit arc flash exposure and safeguards downstream motors, drives, and control circuits during fault events, all while preserving system integrity during routine disconnections.

Key specifications

• Amperage Rating: 400A
• Voltage Rating: 600V
• Number of Poles: 3-Pole
• Product Type: Fused Disconnect Switch
• Brand: Allen-Bradley
• Model: 194R-NJ400P3

Applications and benefits

This fused disconnect is ideal for service feeders, motor control centers, and equipment enclosures where quick, reliable isolation is essential. Use cases include:

• Isolating large motors and conveyors during maintenance
• Providing a clearly defined shut-off point for critical HVAC and pumping systems
• Serving as a compliant, lockable disconnect in switchgear assemblies

Benefits you can expect:

• Enhanced safety during maintenance: Built-in lockout/tagout compatibility ensures personnel can secure power before work begins.
• Reliable, under-load disconnection: Fuse protection maintains system integrity and short-circuit response without sacrificing quick isolation when needed.
• Durability for harsh environments: Designed to endure industrial conditions typical of manufacturing floors, distribution centers, and processing facilities.
• Clear electrical isolation point: A dedicated disconnect path minimizes downtime and simplifies troubleshooting and servicing.

Why this Allen-Bradley model stands out

Compared to generic disconnects, the 194R-NJ400P3 brings the trust and consistency of Allen-Bradley engineering to your power distribution. Its 3-pole configuration provides precise control over each phase, while the fused design offers targeted protection that helps prolong the life of downstream equipment. For facilities standardizing on reliable control infrastructure, this switch integrates smoothly with existing control cabinets and motor control setups, delivering predictable performance when it counts.

Care, installation, and best practices

Ensure installation is performed by a qualified electrician following all local electrical codes. Verify compatibility with your enclosure and wiring methods, and plan for routine inspection of fuse elements as part of preventive maintenance. Keep a clear lockout/tagout procedure in place to maximize safety during servicing and testing.