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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 HF321NR is a 30 A, three-phase fusible safety switch rated for 240V AC, housed in galvanized steel for indoor/outdoor use. 3G Electric interprets this demand, sources the genuine OEM part, and supports…

SKU 3G-OTH-25316

Brand
Siemens
Item
Safety Switch: Fusible, 30 A, Three Phase, 240V AC, Galvanized Steel
Category
Fusible Safety Switches
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Siemens
Manufacturer Part Number
HF321NR
Type
30 A, Three Phase, Galvanized Steel, Indoor/Outdoor
AC
240V

Technical Documents

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

Product Description

The SIEMENS HF321NR is a 30 A, three-phase fusible safety switch rated for 240V AC, housed in galvanized steel for indoor/outdoor use. 3G Electric interprets this demand, sources the genuine OEM part, and supports your facility with specialist expertise across 14 industrial departments — including electrical, combustion, and controls — ensuring you get the right solution, not just a part.

Frequently Asked Questions

What is the SIEMENS HF321NR safety switch used for?

The SIEMENS HF321NR is a fusible safety switch used for disconnecting and protecting three-phase electrical circuits in industrial and commercial applications. It is rated for 30 A at 240V AC and is suitable for indoor/outdoor use, providing reliable overcurrent protection and safe manual disconnection.

What are the specifications of the SIEMENS HF321NR safety switch?

The SIEMENS HF321NR is a three-phase fusible safety switch rated for 30 A and 240V AC. It features a galvanized steel enclosure for durability and is designed for both indoor and outdoor installation. The manufacturer part number is HF321NR, and it is part of Siemens' fusible safety switch product line.

Where to buy the SIEMENS HF321NR safety switch worldwide?

You can source the SIEMENS HF321NR 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; we supply genuine Siemens components for industrial applications.

How to install the SIEMENS HF321NR safety switch?

Install the SIEMENS HF321NR safety switch by mounting the galvanized steel enclosure securely, connecting three-phase power to the line side, and the load to the load side. Ensure proper fuse sizing per circuit requirements. Follow local electrical codes and use appropriate personal protective equipment. Consult a qualified electrician for installation.

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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