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SQUARE D Non-Fusible Safety Switch - Non-Fusible Safety Switches
SQUARENon-Fusible Safety Switches

SQUARE D Non-Fusible Safety Switch

The SQUARE D HU366 is a 600 A, three-phase, non-fusible safety switch rated for 600V AC, housed in galvanized steel for indoor use. 3G Electric interprets this demand and delivers it across 14 industrial departments…

SKU 3G-OTH-129310

Also listed as: HU 366 · HU-366

Brand
SQUARE
Item
D Non-Fusible Safety Switch
Part Number
HU366
Category
Non-Fusible Safety Switches
Available to Order
Also known as:HU366SQUARE
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

SQUARE
Manufacturer Part Number
HU366
Type
600 A, Three Phase, Galvanized Steel, Indoor
AC
600V

Technical Documents

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SQUARE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SQUARE D HU366 is a 600 A, three-phase, non-fusible safety switch rated for 600V AC, housed in galvanized steel for indoor use. 3G Electric interprets this demand and delivers it across 14 industrial departments, with specialist depth in combustion, pumps and controls as an authorised distributor for brands like Schneider, ABB, Siemens, SKF, Festo, Fluke, Interpump and FBR.

Frequently Asked Questions

What is a Square D HU366 safety switch used for?

The Square D HU366 is a non-fusible safety switch used to safely disconnect and isolate electrical equipment in industrial and commercial facilities. It handles 600 A, three-phase, 600V AC loads, providing a visible break for maintenance and emergency shutdown.

What are the specifications of the Square D HU366 safety switch?

The Square D HU366 is a non-fusible safety switch rated for 600 A, three-phase, 600V AC. It features a galvanized steel enclosure for indoor use. The manufacturer part number is HU366, and it is designed for reliable disconnect applications in industrial power distribution.

Where to buy a Square D HU366 safety switch worldwide?

3G Electric supplies the Square D HU366 safety switch to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial solutions provider, we source and deliver genuine Square D equipment for your electrical safety needs.

How to install a Square D non-fusible safety switch?

Install the Square D HU366 on a sturdy surface per local electrical codes. Ensure the switch is in the OFF position before wiring. Connect line and load conductors to the appropriate terminals, torque to manufacturer specifications, and verify proper grounding before energizing.

Used in

Common applications for SQUARE
Industrial power distribution — Square D HU362AWC non-fusible safety switch for disconnecting three-phase loads up to 60 A.
Busway branch circuits — Square D PQ4203G fusible bus plug for overcurrent protection in I-Line busway systems.
Panelboard surge protection — Square D HL4IMA24C SPD for transient voltage suppression in 277/480V AC wye systems.
Power distribution in control panels — Square D 9080LBA263106 open distribution block for splitting 400 kcmil conductors.
Machine control stations — Square D 9001BG303 push-button station for open/close/stop operations in industrial machinery.
Motor starting and protection — Square D 8536SBG2V02H30S NEMA starter for non-reversing three-phase motor control up to 18 A.
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SQUARE Products

3G Electric supplies SQUARE non-fusible safety switches. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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SQUARE
Non-fusible safety switch rated 60 A, three-phase, 240V AC. Galvanized steel enclosure suitable for indoor and outdoor installation. Provides manual disconnect for three-phase equipment in industrial and commercial settings

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