Westinghouse LAB3400NW - 400A, 600V, 3-Pole, Switch

Powerful, dependable, and footprint-conscious, the Westinghouse LAB3400NW delivers 400A at 600V across 3 poles for robust isolation and protection. This fusible switch is built to perform in demanding industrial and commercial environments, providing reliable on/off control and dependable overcurrent protection for your critical loads.

Designed to streamline motor control and panel integration, the LAB3400NW combines a compact footprint with maintenance-friendly serviceability. It’s the smart choice when space is at a premium and uptime is non-negotiable.

Key specifications

• Model: LAB3400NW
• Amperage: 400A
• Voltage: 600V
• Poles: 3-Pole

Why this switch stands out

• Three-pole design ensures full disconnection of three-phase power, enhancing safety during maintenance and startup.
• Compact, maintainable fusible switch tailored for panelboards and motor disconnects where space is limited.
• Rugged construction suited to harsh industrial and commercial environments, delivering consistent performance under high current and voltage demands.
• Acts as both an on/off isolator and overcurrent protection device, helping safeguard motors and branch circuits from short circuits and overloads.

Ideal use cases

Best suited for motor disconnects in manufacturing lines, panelboards feeding heavy equipment, and branch circuits requiring reliable protective switching. When you need a compact solution that preserves protective functionality without bulking up the panel, LAB3400NW fits the bill.

Practical guidance for deployment

• Plan panel layout to accommodate the 3-pole configuration and ensure safe maintenance access.
• Coordinate with upstream protective devices to ensure appropriate fuse ratings and selectivity.
• Use in systems where dependable isolation and overcurrent protection minimize downtime and protect valuable equipment.