Square D Heavy Duty Safety Switch – H325N – 3 Pole – 400A – 240V – Series E – Fusible Disconnect

The Square D heavy duty safety switch (Model H325N) from Schneider Electric is a robust industrial-grade fusible disconnect designed for high-performance power isolation in demanding electrical systems. Built under the Square D Series E platform, this switch delivers superior mechanical endurance and reliability compared to standard NEMA KS-1 and UL98 requirements.

Engineered for heavy-duty applications, the H325N provides safe and visible disconnection of electrical circuits, ensuring maintenance safety and system protection. It features a quick-make, quick-break mechanism for fast switching action, along with a dual cover interlock and a color-coded handle indicator for clear operational status.

With a 400A current rating and 3-pole configuration, this safety switch is suitable for three-phase industrial systems operating at 240VAC and 250VDC. The fusible design allows the use of multiple fuse classes, providing flexible protection coordination depending on system requirements.

Specifications

• Brand: Square D / Schneider Electric Schneider Electric
• Manufacturer: Schneider Electric
• Product Family: Series E
• Device Type: Heavy Duty Safety Switch / Fusible Disconnect
• Model Number: H325N
• Configuration: 3 Pole
• Rated Current: 400A
• Voltage Rating: 240VAC / 250VDC
• Short Circuit Current Rating (SCCR): 10kA – 200kA @ 240V
• Fuse Types Supported: H, J, K, L, R

Electrical Performance

• Operational Voltage: 240VAC / 250VDC
• Current Rating: 400A
• High fault current withstand capability up to 200kA
• Fusible protection system for coordinated circuit protection

Mechanical & Construction Features

• Quick-make, quick-break operating mechanism
• Dual cover interlock system for enhanced safety
• Color-coded handle indicator for clear ON/OFF status
• Steel enclosure construction for industrial durability
• Surface-mounted installation
• Factory-installed neutral included
• NEMA 1 enclosure rating
• Designed for high mechanical endurance exceeding NEMA KS-1 / UL98 standards

Applications

• Industrial power distribution systems
• Motor control centers (MCC)
• HVAC power isolation
• Heavy machinery disconnects
• Commercial and industrial electrical panels
• Maintenance safety isolation switches

Standards & Certifications

• UL Listed
• CSA Approved
• Meets NEMA KS-1 / UL98 performance expectations (exceeds in endurance)
• Industrial-grade safety switch compliance requirements

Dimensions & Weight

• Dimensions (H × W × D): 10.13 × 27.63 × 50.25 in
• Weight: 173.06 lbs

Environmental Ratings

• Designed for harsh industrial environments
• High mechanical durability construction
• Suitable for heavy-duty continuous industrial use
• Long service life with enhanced switching endurance

Returns are easy

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

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