Square D H365NR Heavy Duty Safety Switch – 400A – 3 Pole – 600V – Fusible Disconnect – Neutral Included – NEMA 3R Outdoor Enclosure

The Square D H365NR Heavy Duty Safety Switch is a high-capacity fusible disconnect switch designed for commercial, industrial, and service entrance applications requiring reliable power isolation and overcurrent protection. Manufactured by Schneider Electric under the Square D brand, this heavy-duty safety switch is rated for 400A and 600V, making it suitable for demanding electrical distribution systems and large equipment installations.

Featuring a 3-pole configuration with a factory-installed neutral, the H365NR provides a convenient disconnecting means for three-phase systems where a neutral conductor is required. When equipped with the appropriate fuses, the switch offers dependable overload and short-circuit protection while serving as a safe means of equipment isolation during maintenance and servicing.

The switch incorporates a quick-make, quick-break operating mechanism that ensures rapid contact operation and enhanced safety. Its heavy-duty construction is engineered to exceed standard endurance requirements, providing long service life and reliable operation under frequent switching conditions.

Housed in a NEMA 3R rainproof enclosure constructed from galvanized steel, the H365NR is suitable for both indoor and outdoor installations. The enclosure protects against rain, sleet, and environmental exposure, making it ideal for utility, industrial, and commercial applications where durability and performance are critical.

Specifications

• Brand: Square D by Schneider Electric
• Manufacturer: Schneider Electric
• Part Number: H365NR
• Series: H Series
• Device Type: Heavy Duty Safety Switch
• Disconnect Type: Fusible
• Switch Action: Single Throw
• Number of Poles: 3 Pole
• Neutral: Factory Installed Neutral
• Current Rating: 400A
• Voltage Rating: 600V AC/DC
• Phase: 3 Phase
• Mounting Type: Surface Mount
• Enclosure Type: NEMA 3R Rainproof

Electrical Performance

• Rated Current: 400A
• Maximum Voltage: 600V AC/DC
• Fuse Protection: Supports field-installed fuses for overcurrent and short-circuit protection
• Short-Circuit Current Rating (SCCR): Up to 200kA when used with appropriate fuse classes
• Quick-Make / Quick-Break Mechanism: Yes
• Suitable for Service Entrance Applications: Yes

Mechanical & Construction Features

• Heavy-duty industrial-grade construction
• Factory-installed neutral assembly
• Single-throw switching mechanism
• Quick-make, quick-break operation
• Visible blade design for positive disconnect indication
• Surface-mounted enclosure
• Rugged operating handle mechanism
• Long mechanical service life
• Designed for frequent operation and demanding environments

Enclosure & Protection

• Enclosure Rating: NEMA 3R
• Enclosure Material: Galvanized steel
• Rainproof Construction: Yes
• Outdoor Rated: Yes
• Corrosion-Resistant Finish: Yes
• Suitable for Indoor and Outdoor Installation: Yes

Applications

• Service entrance disconnects
• Industrial power distribution systems
• Commercial electrical systems
• Motor and equipment isolation
• Utility and infrastructure installations
• Manufacturing facilities
• HVAC and mechanical equipment disconnecting means
• Three-phase systems requiring neutral conductors

Standards & Certifications

• UL Listed
• CSA Certified
• NEMA Heavy Duty Safety Switch Standards
• UL 98 Safety Switch Compliance
• Suitable for service entrance applications when installed in accordance with applicable codes

Returns are easy

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

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