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Siemens Safety Switch: Fusible, 30 A, Three Phase, 240V AC, Galvanized Steel - Fusible Safety Switches
SiemensFusible Safety Switches

Siemens Safety Switch: Fusible, 30 A, Three Phase, 240V AC, Galvanized Steel

The SIEMENS HF321N is a 30 A, three-phase, fusible safety switch rated for 240V AC. Housed in a galvanized steel enclosure for indoor use, this switch provides a reliable disconnecting means for industrial electrical…

SKU 3G-OTH-28509

Brand
Siemens
Item
Safety Switch: Fusible, 30 A, Three Phase, 240V AC, Galvanized Steel
Category
Fusible Safety Switches
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Technical Specifications

Siemens
Manufacturer Part Number
HF321N
Type
30 A, Three Phase, Galvanized Steel, Indoor
AC
240V

Technical Documents

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

Product Description

The SIEMENS HF321N is a 30 A, three-phase, fusible safety switch rated for 240V AC. Housed in a galvanized steel enclosure for indoor use, this switch provides a reliable disconnecting means for industrial electrical circuits. 3G Electric interprets your demand for this specific OEM part, sourcing it with full accountability across our 14 industrial departments.

Frequently Asked Questions

What is the SIEMENS HF321N safety switch used for?

The SIEMENS HF321N is a fusible safety switch used for disconnecting electrical circuits in industrial and commercial applications. It provides overcurrent protection and safe isolation for three-phase equipment operating at 240V AC, typically in motor control centers, lighting panels, and machinery.

What are the specifications of the SIEMENS HF321N safety switch?

The SIEMENS HF321N is a 30 A, three-phase, fusible safety switch rated for 240V AC. It features a galvanized steel enclosure designed for indoor use. The manufacturer part number is HF321N, and it is built for reliable disconnection and overcurrent protection in industrial environments.

Where to buy the SIEMENS HF321N safety switch worldwide?

You can source the SIEMENS HF321N safety switch through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this item.

How to install the SIEMENS HF321N safety switch?

Install the SIEMENS HF321N safety switch by mounting it on a flat indoor surface, connecting line and load conductors to the appropriate terminals, and ensuring proper grounding per local codes. Always de-energize the circuit before installation and follow the manufacturer's wiring diagram for safe operation.

Used in

Common applications for Siemens
District cooling plants — LME73 + RWF55 for condenser-water modulation
Inflight catering and food-processing steam boilers — LMG22 with SQN90 air-fuel cross-damper
Hospital steam-plant redundancy — LME41 with QRA2 UV flame detection for dual-fuel boilers
Semiconductor fab process heat — LME23 and SKP55 gas valves on hot-oil heater skids
Container-terminal reefer-deck heating — LMG22 retrofit onto legacy burner racks

Siemens Products

3G Electric supplies Siemens 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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