SIEMENS HF321J Fusible Safety Switch 783643150829 240-V 3PST

( Brand: Siemens ), ( Type: Industrial Electrical Controls Automation Electrical Switches ), ( Country Of Origin: Mx ), ( Weight: 15.8000 ), ( Length: 19.900 ), ( Width: 11.400 ), ( Features: Safety Switch, Contact Form 3pst, Current Rating 30 A, Depth 8 1/ ), ( Battery Included: No ), ( UPC: 783643150829 ), ( Manufacturer Part Number: HF321J )

Review SIEMENS Fusible Safety Switch Heavy Duty 240

The Siemens HF321J Fusible Safety Switch is a versatile and reliable electrical safety device designed for use in various applications where overcurrent protection is essential. This switch is rated for a voltage of 240 volts and offers three pole, single throw (3PST) contacts, making it suitable for controlling multiple loads.

The unique feature of this switch is its fusible link design. A fusible link is a type of overcurrent protection that melts or breaks when the current flowing through it exceeds a certain level. The HF321J comes with three independently fused links, each capable of protecting its respective load circuit. Once a link melts due to an overload, it disconnects the circuit to prevent further damage or potential electrical hazards.

The Siemens HF321J is compact in size, measuring only 73mm in width, 116mm in height, and 35mm in depth. Its robust and durable construction is ensured by its IP20-rated enclosure, which provides a degree of protection against dust and water splashes.

The switch is designed to be easy to install and use. It features a clear ON/OFF indicator lamp, allowing users to easily determine the status of the switch. The terminal block is accessible from the front, making wiring connections convenient.

The Siemens HF321J Fusible Safety Switch is compliant with various international safety standards, including IEC 60947-1, IEC 60947-2-1, and IEC 60947-3-1. This ensures that it can be used in various applications across different industries and geographies with confidence.

In summary, the Siemens HF321J Fusible Safety Switch is a compact, reliable, and easy-to-use electrical safety device designed for overcurrent protection applications. Its fusible link design offers independent protection for multiple loads, while its robust and durable construction and compliance with international safety standards make it a versatile and trusted choice for various industries and applications.

Siemens HF321J Fusible Safety Switch: Pros and Cons

The Siemens HF321J Fusible Safety Switch is a protective device designed to ensure safety in electrical circuits. Let's explore its advantages and disadvantages:

1. Fusible Link: The switch features a fusible link that melts and breaks the circuit in case of overcurrent, preventing potential electrical fires.

2. Durable: Siemens is known for manufacturing high-quality electrical components, ensuring the HF321J switch is built to last.

3. Easy Installation: The switch has a simple design, making it easy to install and replace, saving time and effort.

4. Versatile: The HF321J is suitable for various applications, including lighting circuits, heating systems, and small appliances.

5. Safety Certified: This switch complies with relevant safety standards, ensuring safety and reliability in electrical installations.

1. Limited Current Rating: The HF321J has a relatively low current rating (15A), which may not be suitable for high-power applications.

2. Single Pole, Single Throw (SPST): This switch is only suitable for controlling one device or circuit, making it less efficient for controlling multiple devices.

3. Fusible Link Replacement: The fusible link is not user-replaceable, requiring professional assistance for replacement, which may incur additional costs.

The Siemens HF321J Fusible Safety Switch is an excellent choice for protecting low-power electrical circuits from overcurrent issues. Its durability, ease of installation, and safety certifications make it a reliable and effective solution. However, its limited current rating and single pole, single throw design may not be suitable for more complex electrical applications.

If you're looking for a fusible safety switch for low-power applications, the Siemens HF321J is a solid choice. For high-power applications or multiple device control, consider a more robust, multi-pole, multi-throw switch. Always consult with a qualified electrician to ensure proper selection and installation of electrical protective devices.

Details:

Electrical Boxes. Light Industrial. HRK4060, height 15 1/2 in, Horsepower 240V AC 7 hp, Housing Material Steel, IP Rating IP52, Mounting Surface Mount, NEMA Enclosure 12, Neutral Assembly Included Yes, Number of Holes 3 Details.

SIEMENS HF321J Fusible, Safety Switch, Heavy Duty, 240 V, 3PST: Contact Form 3PST, Current Rating 30 A, Depth 8 1/2 in, Duty Enclosure Type Enclosed, Environment Indoor, For Fuse Class J, R, Kit Class R Mfr. And Enclosures. Electrical Outlet's.

part #: hf321j prices

• $417.99-$1500.00

specifications plcmechanize:

• brand: Siemens
• type: Industrial Electrical Controls Automation Electrical Switches
• country of origin: Mx
• weight: 15.8000
• length: 19.900
• width: 11.400
• features: Safety Switch, Contact Form 3pst, Current Rating 30 A, Depth 8 1/
• battery included: No
• upc: 783643150829
• manufacturer part number: HF321J

offer plcmechanize:

• started: May 17, 2026
• sold: 0
• options: Ship-to-home
• availability: In Stock
• quantity: 2

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shipping plcmechanize:

• service: Standard
• type: Fixed
• cost: $0.00
• class: Standard
• transit: 4-4 Days

general plcmechanize:

• condition: New
• Industrial Automation Motion Controls > PLCs HMIs > PLC Processors

seller plcmechanize:

• city: USA
• rating: 99.8%
• # reviews: 1370562

returns plcmechanize:

• method: Money back
• policy: Returns Accepted
• time: 60 Days
• paid by: Seller

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