Square D H365DS Heavy Duty Safety Switch – 400A – 3 Pole – 600V – Fusible Disconnect – NEMA 3/3R/4/4X/12 Stainless Steel Enclosure

The Square D H365DS Heavy Duty Safety Switch is a premium-grade fusible disconnect switch designed for demanding commercial, industrial, and corrosive-environment applications where maximum reliability and continuity of service are essential. Manufactured by Schneider Electric under the trusted Square D brand, this 3-pole heavy-duty safety switch provides a safe and dependable means of disconnecting and isolating electrical equipment operating at up to 600V.

Rated for 400A, the H365DS is equipped to accept field-installed fuses that provide overcurrent and short-circuit protection for feeders, service entrances, motor circuits, and industrial power distribution systems. The switch supports a short-circuit current rating ranging from 10kA to 200kA depending on the fuse class utilized, offering flexible protection options for a wide variety of installations.

Constructed with a durable 304 stainless steel enclosure, the H365DS is designed to withstand harsh indoor and outdoor environments, including areas exposed to moisture, dust, corrosion, and washdown conditions. Its NEMA 3, 3R, 4, 4X, and 12 enclosure ratings make it suitable for applications requiring weatherproof, dust-tight, and corrosion-resistant protection.

The switch features a quick-make, quick-break operating mechanism, surface-mount installation, and heavy-duty construction that exceeds standard performance requirements, ensuring long service life and dependable operation in critical electrical systems.

Specifications

• Brand: Square D by Schneider Electric
• Manufacturer: Schneider Electric
• Part Number: H365DS
• UPC: 785901195900
• Series: H Series
• Device Type: Heavy Duty Safety Switch
• Disconnect Type: Fusible
• Action: Single Throw
• Number of Poles: 3 Pole
• Current Rating: 400A
• Maximum Voltage Rating: 600V AC/DC
• Mounting Type: Surface Mount
• Terminal Type: Lugs
• Wire Size Range: #1/0 to 750 kcmil (Copper or Aluminum)
• Factory Installed Neutral: No
• Electrical Interlock: None

Electrical Performance

• Rated Current: 400A
• Rated Voltage: 600V AC/DC
• Short-Circuit Current Rating (SCCR):
  • 10kA with Class H or K fuses
  • Up to 200kA with Class J or R fuses
• Fuse Protection: Provides overcurrent and short-circuit protection when equipped with appropriate fuses
• Switch Action: Single Throw
• Heavy-Duty Performance: Designed for critical industrial applications

Mechanical & Construction Features

• Heavy-duty safety switch construction
• Quick-make, quick-break operating mechanism
• Surface-mounted installation
• 304 stainless steel enclosure
• Corrosion-resistant design
• Rainproof and dust-tight construction
• Suitable for indoor and outdoor use
• Lug terminal connections
• Long service life for industrial environments

Enclosure & Environmental Protection

• Enclosure Material: 304 Stainless Steel
• Enclosure Ratings:
  • NEMA 3
  • NEMA 3R
  • NEMA 4
  • NEMA 4X
  • NEMA 12
• Rainproof construction
• Dust-tight protection
• Corrosion-resistant enclosure
• Suitable for washdown and harsh environmental conditions

Applications

• Industrial power distribution systems
• Service entrance disconnects
• Motor control and protection systems
• Manufacturing facilities
• Food and beverage processing plants
• Chemical processing environments
• Water and wastewater treatment facilities
• Outdoor electrical installations
• Corrosive and washdown environments

Standards & Certifications

• UL Listed
• NEMA Heavy Duty Safety Switch Construction
• Complies with applicable UL safety switch requirements
• Suitable for commercial and industrial applications requiring high-performance disconnecting means

Returns are easy

You may return items within 30 days of delivery for a refund.

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