Siemens HF366NRA Safety Switch – VBII Series – 600A – 3 Pole – 600VAC – Heavy Duty Fusible Disconnect with Solid Neutral – NEMA 3R Outdoor Enclosure

The Siemens HF366NRA is a VBII Series heavy-duty fusible safety switch designed for high-capacity power distribution, motor control, and service entrance applications in demanding commercial and industrial environments. Rated at 600A and 600VAC, this 3-pole switch includes a 4-wire configuration with a solid neutral, ensuring stable and safe electrical isolation when used with properly rated fuses.

Built in a rugged NEMA Type 3R enclosure, the HF366NRA is suitable for outdoor installations, providing protection against rain and environmental exposure. Its heavy-duty construction and high power handling capability make it ideal for large-scale electrical distribution systems.

Specifications

• Brand: Siemens
• Part Number: HF366NRA
• Series: VBII Series
• Type: VBII Fusible Heavy Duty Single Throw
• Category: Safety Switch / Disconnect Switch
• Duty Rating: Heavy Duty
• Fusibility: Fusible
• Contact Configuration: 3PST / TPST
• Enclosure Type: NEMA 3R (Outdoor Rated)
• Material: Steel
• Mounting Type: Surface

Electrical Ratings

• Current Rating: 600A
• Voltage Rating: 600VAC
• Number of Poles: 3 Pole
• Phase: 3 Phase
• Number of Wires: 4 (Solid Neutral Configuration)
• Operating Temperature: -29°C to 85°C

Motor / Load Ratings

• Horsepower Ratings: 200 HP, 500 HP

Features

• Heavy-duty fusible safety switch
• 3-pole, 4-wire configuration with solid neutral
• NEMA 3R weatherproof enclosure for outdoor use
• High-capacity 600A rating
• Rugged steel construction for industrial durability
• Surface-mounted design
• Mechanical lug connections
• Suitable for service entrance and motor control applications
• Reliable manual disconnecting function

Construction

• Heavy-duty steel enclosure
• NEMA 3R rainproof outdoor design
• Industrial-grade switching mechanism
• Built for harsh environmental conditions
• Surface-mounted installation

Applications

• Outdoor industrial power distribution systems
• Commercial electrical installations
• Service entrance equipment
• Motor control and protection systems
• HVAC and large mechanical equipment disconnects
• Manufacturing and processing facilities
• Utility and infrastructure installations
• Equipment isolation and maintenance safety procedures
• Lockout/Tagout (LOTO) compliance applications

Returns are easy

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

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