Siemens HF366NA Safety Switch – VBII Series – 600A – 3 Pole – 600VAC – Heavy Duty Fusible Disconnect with Solid Neutral – NEMA 1 Indoor Enclosure

The Siemens HF366NA is a VBII Series heavy-duty fusible safety switch designed for high-capacity electrical power distribution, motor control, and service entrance applications in industrial and commercial systems. Rated at 600A and 600VAC, this 3-pole switch features a solid neutral configuration and a fusible 3-fuse design, ensuring reliable disconnect performance and strong short-circuit protection when used with properly rated fuses.

Built for indoor installations, the HF366NA is housed in a durable NEMA Type 1 steel enclosure, making it suitable for controlled environments where robust electrical isolation and safety are required. Its heavy-duty construction and high current capacity make it ideal for large-scale electrical distribution systems.

Specifications

• Brand: Siemens / ITE
• Part Number: HF366NA
• Series: VBII Series
• Type: HF
• Category: Safety Switch / Disconnect Switch
• Duty Rating: Heavy Duty
• Fusibility: Fusible
• Contact Configuration: 3PST / TPST
• Enclosure Type: NEMA 1 (Indoor)
• 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)

Features

• Heavy-duty fusible safety switch
• 600A high-capacity electrical switching
• 3-pole, 3-phase configuration
• Solid neutral for stable load distribution
• NEMA 1 indoor steel enclosure
• Mechanical lug terminal connections
• Reliable single-throw disconnect mechanism
• Designed for industrial and commercial power systems
• Suitable for service entrance applications

Construction

• Heavy-duty steel enclosure
• NEMA 1 indoor-rated design
• Industrial-grade switching mechanism
• Surface-mounted configuration
• Built for long-term durability in high-load environments

Applications

• Industrial power distribution systems
• Commercial electrical installations
• Service entrance equipment
• Motor control and protection systems
• Large HVAC and mechanical systems
• Manufacturing and processing facilities
• Electrical isolation and maintenance operations
• Lockout/Tagout (LOTO) safety procedures

Returns are easy

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

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