HF366RA | Siemens VBII 600A 600V 3-Pole Heavy-Duty Fused Safety Switch NEMA 3R
Siemens · Circuit Breakers & Protection
Description The Siemens® HF366RA is a VBII Series heavy-duty fusible safety switch designed for secure disconnection and overcurrent protection in industrial and commercial power systems. This 3-pole, 600A, 600VAC switch is enclosed in a NEMA 3R outdoor-rated steel housing, providing reliable operation and durability in demanding environments. With a visible-blade, double-break mechanism, it ensures safe isolation of electrical circuits while maintaining superior performance and safety standards. Technical Specifications Condition New/Never Used Surplus Brand Siemens Category Switches Part Number HF366RA Subcategory Heavy-Duty Safety Switch Series VBII Type HF (Fused, Heavy-Duty) Number of Poles 3 Phase 3-Phase Voltage Rating 600 VAC Amperage Rating 600 A Frequency 60 Hz Interrupting Rating 200 kA @ 600V (with Class R fuses) Horsepower Rating 200 HP Mounting Type Surface mount Enclosure Type NEMA 3R (Outdoor) Material Steel Operating Mechanism Quick-make, quick-break visible blade Handle Type Red padlockable handle (up to 3 padlocks, 5/16" hasps) Safety Features Dual cover interlock, visible blade, arc chutes Terminal Type Lug connections Operating Temperature Range -29°C to +85°C Wire Bending Space Meets/exceeds NEC requirements Dimensions (H × W × D) 56.07 × 26 × 14.68 in Alternate Dimensions (mm) 1424 × 660 × 373 mm Weight 99.8 lbs (45.3 kg) Information About HF366RA The HF366RA is part of Siemens’ VBII Series of heavy-duty disconnect switches, engineered for high-performance switching and circuit protection. Designed for three-phase, 60 Hz systems, this fused switch accommodates three Class R fuses and delivers a maximum interrupting capacity of 200 kA at 600V. The visible blade design ensures clear verification of contact separation, while the quick-make, quick-break mechanism guarantees fast and positive switching. Featuring a defeatable dual cover interlock, padlock provisions, and a hook-stick operable red handle, the HF366RA prioritizes operator safety and compliance with NEC wire-bending space requirements. Suitable for both indoor and outdoor use, it is ideal for motor disconnects, service entrance applications, and industrial control systems. Key Features: Heavy-Duty Construction: Type VBII switch built for demanding industrial and commercial environments. High Current Rating: 600A, 600VAC for large-scale electrical distribution systems. Visible Blade Design: Provides visual confirmation of contact separation for maximum operator safety. Double-Break Switching Action: Ensures reliable circuit interruption and extended switch life. NEMA 3R Enclosure: Outdoor-rated steel housing protects against dust, rain, and corrosion. Quick-Make, Quick-Break Mechanism: Guarantees fast, positive on/off operation under load. Padlockable Handle: Accommodates up to three padlocks for secure lockout/tagout compliance. Arc Chute Assembly: Efficiently dissipates heat during switching to enhance component longevity. Compliant Design: Meets or exceeds NEC wire-bending and clearance requirements. The HF366RA delivers the safety, durability, and reliability required for critical disconnection and protection in industrial power systems.
Brand: Siemens · Category: Circuit Breakers & Protection
Key features
- Heavy-Duty Construction: Type VBII switch built for demanding industrial and commercial environments.
- High Current Rating: 600A, 600VAC for large-scale electrical distribution systems.
- Visible Blade Design: Provides visual confirmation of contact separation for maximum operator safety.
- Double-Break Switching Action: Ensures reliable circuit interruption and extended switch life.
- NEMA 3R Enclosure: Outdoor-rated steel housing protects against dust, rain, and corrosion.
- Quick-Make, Quick-Break Mechanism: Guarantees fast, positive on/off operation under load.
- Padlockable Handle: Accommodates up to three padlocks for secure lockout/tagout compliance.
- Arc Chute Assembly: Efficiently dissipates heat during switching to enhance component longevity.
- Compliant Design: Meets or exceeds NEC wire-bending and clearance requirements.
Specifications
| Manufacturer part number | HF366RA |
|---|---|
| Condition | New/Never Used Surplus |
| Brand | Siemens |
| Category | Switches |
| Part Number | HF366RA |
| Subcategory | Heavy-Duty Safety Switch |
| Series | VBII |
| Type | HF (Fused, Heavy-Duty) |
| Number of Poles | 3 |
| Phase | 3-Phase |
| Voltage Rating | 600 VAC |
| Amperage Rating | 600 A |
| Frequency | 60 Hz |
| Interrupting Rating | 200 kA @ 600V (with Class R fuses) |
| Horsepower Rating | 200 HP |
| Mounting Type | Surface mount |
| Enclosure Type | NEMA 3R (Outdoor) |
| Material | Steel |
| Operating Mechanism | Quick-make, quick-break visible blade |
| Handle Type | Red padlockable handle (up to 3 padlocks, 5/16" hasps) |
| Safety Features | Dual cover interlock, visible blade, arc chutes |
| Terminal Type | Lug connections |
| Operating Temperature Range | -29°C to +85°C |
| Wire Bending Space | Meets/exceeds NEC requirements |
| Dimensions (H × W × D) | 56.07 × 26 × 14.68 in |
| Alternate Dimensions (mm) | 1424 × 660 × 373 mm |
| Weight | 99.8 lbs (45.3 kg) |
| Product type | Heavy-Duty Safety Switch |
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