Square D D321N - 30A, 240V, Safety Switch

The Square D D321N is a rugged 30A, 240V Safety Switch built for demanding industrial and commercial environments where dependable electrical isolation is non-negotiable. Designed to support proper lockout/tagout (LOTO) procedures, this switch ensures safe, compliant maintenance and service by delivering a reliable disconnect under load when you need it most.

Why this safety switch stands out

• Industrial-grade isolation and reliability: Engineered to provide a secure disconnection under load, helping to prevent unexpected energization during maintenance and servicing.
• Lockout/Tagout readiness: Specifically designed to integrate with standard lockout devices and procedures, enhancing worker safety and compliance on the shop floor.
• Clear electrical safety for demanding environments: A purpose-built solution for equipment and motor control where consistent, safe shutdowns are essential.
• Compact, durable 30A, 240V performance: Handles common industrial loads with enough capacity to manage routine disconnects without overengineering the system.
• Trusted brand compatibility: Square D quality that aligns with existing Square D panels and safety accessories, streamlining installation and maintenance.

Ideal use cases

• Disconnection points for motors, conveyors, and other industrial machinery during maintenance or repairs
• Safety interlocks in panelboards and switchgear where reliable isolation is required
• Facilities and commercial spaces that must adhere to lockout/tagout procedures for worker safety
• Replacement for aging or inadequate disconnects that risk unsafe energization during service

What problems it solves

For teams that prioritize safety and uptime, the D321N delivers predictable, safe disconnections under load, reducing the risk of accidental energization during service. Its compatibility with standard lockout practices helps facilities stay in compliance while minimizing downtime and manual risk.

Specifications at a glance

• Amperage rating: 30A
• Voltage rating: 240V
• Product type: Safety Switch
• Brand: Square D
• Model: D321N

Whether you’re upgrading an aging disconnect or configuring a new safety-conscious control panel, the Square D D321N Safety Switch offers precise, dependable isolation with lockout/tagout compatibility. It’s a practical, purpose-built solution for organizations that demand clear, safe maintenance shutdowns and durable performance over the long haul.