HNF363 - Siemens 100A 3-Pole 600V Non-Fusible Heavy Duty Safety Switch, NEMA 1

HNF363 - Siemens 100A 3-Pole 600V Non-Fusible Heavy Duty Safety Switch, NEMA 1

Not sure if you need a non-fusible safety switch? Here is a simple way to think about it: if your building's main breaker or panel already handles fault protection and you just need a local on/off disconnect with a lockable handle for safety, the Siemens HNF363 is what you are looking for. It is a 100A, 3-pole, 600V AC indoor heavy duty safety switch with no fuse holders - it simply disconnects the load when you need it off.

The HNF363 is designed for indoor use in a steel NEMA 1 enclosure - sheltered, dry spaces like a factory floor, mechanical room, or utility area. It handles loads up to 100 HP on a 600V 3-phase circuit and is approved for service entrance use on 480V or 600V systems. UL listed to UL 98 and meeting NEMA KS-1-1990, it will satisfy most NEC and inspection requirements.

Common Applications

• Disconnect for large 3-phase motors and HVAC equipment
• Service entrance switch where upstream fuses are not required
• Lockout/tagout safety isolation point for maintenance
• Indoor commercial and light industrial disconnect applications

Key Features

• Non-fusible design: No fuses needed; pairs with an upstream circuit breaker
• Visible blade, double-break: You can see the switch is open - an important safety confirmation
• Quick-make, quick-break: Reliable switching action every time you operate it
• Padlockable handle: Lock it off for safety - accepts up to 3 padlocks
• Front-removable lugs: Accepts #14-1/0 AWG copper or aluminum wire
• Seismic rated: 2007 California Building Code Zone 4 compliant

Specifications

• Part Number: HNF363
• Manufacturer: Siemens
• Series: VBII
• Current Rating: 100A
• Voltage: 240/480/600V AC; 250/600V DC
• Poles/Wires: 3-pole, 3-wire (no neutral)
• Fusing: Non-fusible
• Enclosure: NEMA 1 (Type 1, indoor), painted steel
• HP (3-phase): 40 HP @ 240VAC / 75 HP @ 480VAC / 100 HP @ 600VAC
• HP (1-phase): 15 HP @ 240VAC / 30 HP @ 480VAC / 40 HP @ 600VAC
• HP (DC): 20 HP @ 250VDC / 50 HP @ 600VDC
• Short Circuit Rating: 200 kA (Class R/J/T fuses); 10 kA (Class H or CB)
• Wire Range: #14-1/0 AWG, Cu/Al, 60/75 deg C
• Temp Range: -29 to 85 deg C
• Standards: UL 98 (File E4776), NEMA KS-1-1990, 2007 CBC seismic

Product Identification

• Country of Origin: Mexico
• Dimensions: 23.15 in H x 12.01 in W x 10.17 in D
• Weight: 19.8 lb
• GTIN: 00783643151185

FAQ

Do I need fuses with the HNF363? No. This switch has no fuse holders. It is a disconnect only - your upstream breaker handles fault protection.

Will this work for my 480V panel? Yes. The HNF363 is rated for 240V, 480V, or 600V AC and handles 3-phase loads up to 100 HP at 600V.

What wire size does the HNF363 take? It accepts #14 through 1/0 AWG in copper or aluminum.

Can I use this switch outdoors? No. The NEMA 1 enclosure is indoor only. For outdoor use, look for the HNF363R (NEMA 3R).

What does NEMA 1 mean? It is an indoor-rated enclosure providing basic protection against contact with live parts. It is not weatherproof.