Is this disconnect suitable for outdoor use?

Unfortunately, this model is for indoor use only. The model you would want is HNF363R or a Nema 3R type disconnect. Nema 3R is the designation for weather proofed electrical equipment where Nema 1 is for indoor use only.

Since this is non-fused, can it be wired backwards so the line connects at the bottom and load at the top?

UL98 makes no mention of reverse feeding. Fused safety switches cannot be reverse fed since there would be no way to change the fuse (always energized). HNF363 is non-fused so this is not a concern. The word “Line” is embossed at the top of the enclosure but there is no "Load" marking which can be interpreted to mean it can be backfed. However it still poses a possibly dangerous condition. Consider safety signage on the device at the direction of the engineer that says “Voltage present on load side when switch is in off position” just to alert personnel of a possible hazard. The local AHJ would also have to approve.

What is the HP rating of this switch? Thanks

Power Rating 15 HP at 240 Volt AC 1 Phase, 40 HP at 240 Volt AC 3 Phase, 30 HP at 480 Volt AC 1 Phase, 75 HP at 480 Volt AC 3 Phase, 40 HP at 600 Volt AC 1 Phase, 100 HP at 600 Volt AC 3 Phase, 20 HP at 250 Volt DC

is this for outside use

No, it will be inside (under roof).

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Siemens HNF363 100-Amp 3 Pole 600-volt 3 Wire Non-Fused Heavy Duty Safety Switches

Siemens HNF363 100-Amp 3 Pole 600-volt 3 Wire Non-Fused Heavy Duty Safety Switches

Product ID: 366099030

Details

Connector type
Crimp
Contact type
Normally Open
Current rating
100 Amps
Operating voltage
600 Volts
Operation mode
automatic

⚡100 Amp heavy-duty power

🔄3 Pole quick-make/break action

🔌600 Volt industrial strength

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Description

⚡ Switch to Siemens: Power, Precision, and Protection in One Flip!

INSPECTION MADE EASY - Hinged clear terminal shield with probe holes allows effortless line-side testing without disassembly.
POWERHOUSE PERFORMANCE - Handles a robust 100 Amp current rating for demanding industrial applications.
DURABILITY MEETS SAFETY - Arc chutes dissipate heat to extend switch life while maintaining top-tier safety standards.
INDUSTRIAL VOLTAGE READY - Operates seamlessly at 600 Volts, ensuring compatibility with high-power systems.
RAPID RESPONSE MECHANISM - Quick-make, quick-break operation guarantees reliable and safe switching every time.

The Siemens HNF363 is a 100 Amp, 3 Pole, 600 Volt non-fused heavy-duty safety switch designed for industrial and commercial electrical systems. Featuring a quick-make/quick-break mechanism, arc chutes for heat dissipation, and a hinged clear terminal shield with probe holes, it ensures reliable operation, extended durability, and easy maintenance. Ideal for panel or DIN rail mounting, this Type 1 switch meets IP54 protection standards and supports circuits up to 200K when paired with appropriate fuses.

Specifications

ASIN	B005G92ZZS
ASIN	B005G92ZZS
Actuator Type	Hinge Lever
Brand Name	SIEMENS
Circuit Type	3-way
Color	Grey
Connectivity Protocol	X-10
Connector Type	Crimp
Contact Material	Copper
Contact Type	Normally Open
Control Method	Touch
Controller Type	Push Button
Current Rating	100 Amps
Customer Reviews	4.5 4.5 out of 5 stars (42)
Customer reviews	4.5 4.5 out of 5 stars (42)
Date First Available	31 December 2014
Global Trade Identification Number	00783643151185
International Protection Rating	IP54
Is Discontinued By Manufacturer	No
Item Dimensions	65.3 x 35.6 x 19.3 centimeters
Item Weight	0.01 Pounds
Item model number	HNF363
Manufacturer	Siemens -HI
Manufacturer	Siemens -HI
Material Type	Metal
Model	HNF363
Mounting Type	Panel Mount or DIN Rail Mount
Number of Items	1
Number of Positions	3
Operating Voltage	600 Volts
Operation Mode	automatic
Part Number	HNF363
Product Dimensions	65.28 x 35.56 x 19.3 cm; 4.54 g
Specification Met	certified frustration-free
Switch Type	3-pole Non-fused
Terminal	Physical
UPC	783643151185
Unit Count	1 Count
Wattage	60000 watts

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