Square D D322N Safety Switch – 60 Amp, 240V AC, 3 Fusible 50A, 3-Pole, 4-Wire, NEMA 1 Indoor, General Duty with Neutral Assembly

Condition: Used on a demo stand

The Square D D322N is a General Duty Fusible Safety Switch, designed for 240 Volt AC, 60 Amp, 3-Pole, 4-Wire systems with a factory-installed neutral. This indoor-rated, NEMA Type 1 disconnect switch is commonly installed in residential, light commercial, and agricultural applications where a reliable means of disconnect and overcurrent protection is required. Its fusible design supports Class H, K, or R fuses, making it suitable for both new and retrofit installations.

Engineered for safety, the D322N features visible blade disconnects, a lockable handle, and an internal neutral bar to provide a grounded system. This model is ideal for service disconnects for equipment like HVAC units, pumps, and branch panelboards, especially in systems requiring a neutral conductor.

⚙️ Features:

• Manufacturer: Square D (by Schneider Electric)
• Model Number: D322N
• Amperage Rating: 60 Amps
• Voltage Rating: 240V AC, 3-Phase (Single- or 3-phase systems)
• Poles: 3-Pole
• Wire Configuration: 4-Wire (includes neutral terminal)
• Fusible: Yes – accepts Class H, K, or R fuses
• Enclosure Type: NEMA 1 – Indoor use only
• Action Mechanism: Quick-make, quick-break
• Grounding: Bonding provision for grounding and neutral
• Visible Blades: Yes – allows confirmation of open circuit
• Lockout Capability: Handle can be padlocked for OSHA LOTO compliance
• Conductor Size Range: 14 AWG to 3 AWG (Cu/Al) – confirm with catalog
• Mounting: Surface mount with multiple knockout options

⚡ Applications:

This switch is commonly used as a local disconnect and overcurrent protection device for:

• HVAC units (3-phase air handlers and condensers)
• Pumps, compressors, and motors
• Lighting panels or subpanels requiring a neutral feed
• Irrigation or agricultural equipment
• Indoor service entrance disconnects (with neutral bonding)

Ideal for:

• Residential installations with 3-phase service
• Commercial kitchens and laundry operations
• Light manufacturing and agricultural buildings

🔁 Cross-Referenced or Related Models:

🔄 Comparable Products:

Competitor equivalents with similar specs (verify wire size, lug torque, and enclosure):

• Eaton DG324N – 60A, 240V, fusible, 3P, NEMA 1 with neutral
• Siemens GF322N – General duty safety switch, 60A, indoor
• GE TC35322 – 60A, fusible, 240V, NEMA 1, 3P
• Milbank U6033 – Fusible disconnect with neutral, indoor

🧩 Part of Larger Systems:

This disconnect is often installed between:

• Main service panels and equipment loads
• Used upstream of:
  • HVAC air handlers or compressors
  • Water pumps or subpanels
  • Commercial kitchen equipment requiring 3-phase with neutral

Pairs with:

• Proper Class R, H, or K fuses
• Ground rods and bonding jumpers
• Panelboards and service entry rated breakers

📝 Legal Disclaimer for Trademark Use:

Square D and Schneider Electric are registered trademarks of Schneider Electric SE. Their names and product references are used only for informational and compatibility purposes and do not imply affiliation or endorsement.

🔍 Related:

• Square D fusible safety switch 60A
• 240V 3-pole disconnect with neutral
• indoor fused disconnect switch
• HVAC fused disconnect 3-phase
• 3-phase safety switch Square D with neutral bar

📈 Common Requests:

1. “Is Square D D322N fusible?” ✅
2. “Does D322N have a neutral bar?” ✅
3. “Indoor-rated fused disconnect with 3-pole and neutral”
4. “Can I use D322N for 3-phase HVAC?” ✅
5. “Difference between D322N and DU322?” (Fusible vs. Non-fusible)

P125; B005; GT00035