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Siemens 3NA3372
by Siemens
Read verified buyer reviews ↓OverviewThe Siemens 3NA3372 is a high-rupturing-capacity (HRC) fuse element engineered to deliver dependable protection for diverse industrial electrical and power distribution setups. This NH3 size fuse offers a significant 630 A current rating and is compatible with both 500 V AC and 440 V DC applications. It provides comprehensive gG class full-range protection against both overcurrents and short-circuit events. Designed with safety and ease of use in mind, it includes live grip lugs for secure handling during installation and removal tasks. A convenient front indicator allows for immediate visual confirmation of the fuse's operational status. Fully compatible with Siemens low-voltage HRC fuse systems, the 3NA3372 upholds Siemens' dedication to lasting reliability and superior safety, even in challenging operational settings. Its robust construction and adherence to international regulations make it an excellent choice for safeguarding vital electrical infrastructure.Key Features High Rupturing Capacity (HRC): Delivers outstanding protection against severe short-circuit currents. NH3 Size, 630 A Rating: Ideal for high-current requirements in industrial and power distribution networks. Dual Voltage Compatibility: Functions effectively at 500 V AC and 440 V DC, providing broad application flexibility. gG Class Protection: Provides general-purpose, full-range safeguarding against both overload and short-circuit conditions. Front-Mounted Indicator: Allows for quick and simple visual status checks, simplifying maintenance and troubleshooting. Live Grip Lugs: Designed for safe and secure installation and removal, enhancing operational safety. IEC Standard Compliant: Meets rigorous international standards for low-voltage fuses, ensuring quality and dependability. Technical Specifications Manufacturer: Siemens Article Number: 3NA3372 Fuse Type: Low-Voltage HRC Fuse Element Fuse Size: NH3 (in accordance with EN 60269-1 standard) Rated Current: 630 A Rated Voltage: 500 V AC / 440 V DC Utilization Category: gG (general protection) Indicator: Front-mounted Handling: Live grip lugs Application Category: LV HRC design Compliance: IEC standards Applications Low-Voltage Switchgear and Controlgear Assemblies: Essential for protecting critical components within electrical panels. Industrial Power Distribution Networks: Safeguards main and sub-distribution circuits in factories and industrial facilities. Transformer and Motor Protection: Provides reliable short-circuit and overload protection for inductive loads. General-Purpose Overload and Short-Circuit Protection: Versatile for use across various electrical applications requiring robust fault protection. Backup Protection for Circuit Breakers: Enhances system reliability by acting as a secondary protective device. Commercial and Building Infrastructure: Ensures the safety and continuity of power supply in large commercial buildings. Why Choose the Siemens 3NA3372? Unmatched Siemens Reliability: Benefit from Siemens' renowned engineering and manufacturing quality in LV HRC fuse technology, ensuring consistent performance and longevity. High Current Capacity for Demanding Applications: The 630 A rating makes this NH3 fuse element perfectly suited for high-power industrial and commercial systems, offering robust protection where it's needed most. Enhanced Safety Features: Equipped with live grip lugs and a clear front indicator, this fuse prioritizes operator safety during installation, removal, and routine checks, minimizing risks and simplifying maintenance. Comprehensive gG Protection: Offers superior, full-range protection against both overloads and short circuits, safeguarding your valuable equipment and preventing costly downtime. Global Compliance and Availability: Manufactured to stringent IEC standards, the 3NA3372 is a globally recognized and compliant solution, readily available for worldwide deployment. Order NowUpgrade your electrical system's protection with the Siemens 3NA3372 HRC fuse. Contact us today to place your order or for more information on our complete range of industrial automation solutions.FAQWhat is the primary function of the Siemens 3NA3372 fuse?The Siemens 3NA3372 is designed to protect electrical systems from damage caused by overloads and short circuits. It interrupts the flow of current when a fault occurs, safeguarding equipment.What does "gG class protection" mean for this fuse?gG class protection signifies that the fuse offers general-purpose, full-range protection, effectively handling both sustained overloads and high-magnitude short circuits.Can this fuse be used in both AC and DC applications?Yes, the Siemens 3NA3372 is compatible with both 500 V AC and 440 V DC voltage systems, providing versatility for various electrical setups.How does the front-mounted indicator benefit maintenance?The front-mounted indicator provides a quick and clear visual cue of the fuse's operational status, allowing for immediate identification of a blown fuse and simplifying troubleshooting and maintenance procedures.Is the Siemens 3NA3372 compliant with international standards?Yes, this fuse is manufactured to stringent IEC standards, ensuring its quality, reliability, and global compliance for use in diverse industrial and commercial applications.
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Siemens 3NA3372
Overview
This is a genuine Siemens component from the Siemens Fuses family. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.
Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.
Key Features
- Genuine Siemens catalog part
- Tested before shipment
- Backed by PalmPartsSolution warranty
- Cross-reference and revision assistance available
- Compatible with the broader Siemens automation ecosystem
- Engineered to integrate inside Siemens Fuses installations
Compatibility
When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Siemens equipment. Where applicable, confirm:
- Input/output voltage and current rating
- Communication protocol and network role
- Mounting form factor and footprint
- Operating temperature, humidity, and IP rating
- Required certifications (UL, CE, ATEX, marine, etc.)
Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.
Replacement Information
Three ways to source this part through PalmPartsSolution:
- Exact replacement — same Siemens catalog number, new or refurbished, tested and warrantied
- Form-fit-function equivalent — alternate revision or build that drops in without code changes
- Engineered migration — current-generation Siemens platform with documented conversion notes for the Siemens Fuses family
Contact our engineering team if you need help choosing between these tracks.
Technical Specifications
- Manufacturer: Siemens
- Article Number: 3NA3372
- Fuse Type: Low-Voltage HRC Fuse Element
- Fuse Size: NH3 (in accordance with EN 60269-1 standard)
- Rated Current: 630 A
- Rated Voltage: 500 V AC / 440 V DC
- Utilization Category: gG (general protection)
- Indicator: Front-mounted
- Handling: Live grip lugs
- Application Category: LV HRC design
- Compliance: IEC standards
Applications
- Low-Voltage Switchgear and Controlgear Assemblies: Essential for protecting critical components within electrical panels.
- Industrial Power Distribution Networks: Safeguards main and sub-distribution circuits in factories and industrial facilities.
- Transformer and Motor Protection: Provides reliable short-circuit and overload protection for inductive loads.
- General-Purpose Overload and Short-Circuit Protection: Versatile for use across various electrical applications requiring robust fault protection.
- Backup Protection for Circuit Breakers: Enhances system reliability by acting as a secondary protective device.
- Commercial and Building Infrastructure: Ensures the safety and continuity of power supply in large commercial buildings.
Why Choose the 3NA3372?
- Unmatched Siemens Reliability: Benefit from Siemens' renowned engineering and manufacturing quality in LV HRC fuse technology, ensuring consistent performance and longevity.
- High Current Capacity for Demanding Applications: The 630 A rating makes this NH3 fuse element perfectly suited for high-power industrial and commercial systems, offering robust protection where it's needed most.
- Enhanced Safety Features: Equipped with live grip lugs and a clear front indicator, this fuse prioritizes operator safety during installation, removal, and routine checks, minimizing risks and simplifying maintenance.
- Comprehensive gG Protection: Offers superior, full-range protection against both overloads and short circuits, safeguarding your valuable equipment and preventing costly downtime.
- Global Compliance and Availability: Manufactured to stringent IEC standards, the 3NA3372 is a globally recognized and compliant solution, readily available for worldwide deployment.
Availability & Shipping
- ▸In stock: 3NA3372 ready for immediate dispatch from our Florida warehouse.
- ▸Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
- ▸Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
- ▸Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
- ▸Buy with confidence: Every 3NA3372 ships with a 1-Year PALM Parts warranty and a 30-day return window.
Frequently Asked Questions — Siemens
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Independent Supplier Notice
PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.
Product Condition & Firmware
All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.