Product Description

Siemens 3NWNS20 HRC Fuse – 20A, 415V AC, Size F1, Blade Tag

The Siemens 3NWNS20 is a low-voltage HRC fuse (BS) from the Siemens 3NW series, designed for overload and short-circuit protection in compatible low-voltage electrical systems. The exact article is rated at 20 A, 415 V AC, with an 80 kA breaking capacity, Size F1, GG operating class, and a blade tag configuration. Siemens pricing documentation lists the 3NWNS20 in the blade-tag range with a standard package quantity of 20 pieces.

For SB Smart, this product is positioned as a Siemens industrial electrical protection component for supply, procurement, replacement and maintenance requirements.

Siemens 3NW HRC Fuse

The 3NWNS20 belongs to the Siemens 3NW BS HRC fuse range, designed for low-voltage circuit protection applications. The Siemens 3NW family is specified for 415 V AC / 240 V DC systems with an 80 kA AC breaking capacity.

The fuse is designed to interrupt overload and short-circuit currents within its specified electrical ratings, making it suitable for compatible industrial and electrical distribution applications.

20 A Rated Current

The exact 3NWNS20 has a rated current of 20 A. Both current product listings and Siemens pricing documentation confirm the 20 A rating.

The 20 A rating should be selected according to the protected circuit, conductor capacity, equipment requirements and overall protection-coordination requirements.

The fuse should only be replaced with a device having compatible electrical and mechanical characteristics.

415 V AC Rated Voltage

The 3NWNS20 is rated for 415 V AC. Siemens documentation for the 3NW range also specifies 240 V DC where applicable.

The actual system voltage should always be verified before selecting or replacing the fuse.

80 kA Breaking Capacity

The exact 3NWNS20 has an 80 kA breaking capacity. This is confirmed by current product specifications and Siemens-related documentation.

A high breaking capacity allows the HRC fuse to interrupt high prospective short-circuit currents within its specified operating conditions.

Size F1

The 3NWNS20 is identified as Size F1. The exact product specification lists Size F1 together with its 20 A current rating and 80 kA breaking capacity.

The physical fuse size must match the corresponding fuse base, holder or switch-fuse arrangement.

For replacement applications, the existing fuse size and mounting configuration should therefore be checked along with the electrical ratings.

Blade Tag Configuration

The 3NWNS20 uses a blade tag configuration. Current product listings identify the exact article as a blade-tag fuse, while Siemens pricing documents place 3NWNS20 in the blade-tag group.

The tag configuration is an important mechanical-selection parameter because the fuse must correctly fit the corresponding holder or mounting arrangement.

GG Operating Class

The exact 3NWNS20 is specified as an operating class GG fuse. Siemens-related product data identifies it as a 20 A, 415 V, Size F1, 80 kA, GG fuse.

GG fuses are intended for general-purpose protection against overload and short-circuit conditions in compatible electrical circuits.

The correct fuse should still be selected according to the load, equipment rating, fault level and protection-coordination requirements.

HRC Fuse Protection

HRC means High Rupturing Capacity. An HRC fuse is designed to interrupt high fault currents safely within its specified breaking capacity.

The 3NWNS20 combines:

• 20 A rated current

• 415 V AC rated voltage

• 80 kA breaking capacity

• Size F1

• Blade tag

• GG operating class

These specifications make it suitable for compatible low-voltage industrial protection applications.

Low-Current Industrial Fuse Application

The 3NWNS20 is part of the Siemens 3NWNS blade-tag series. Siemens pricing documentation lists the blade-tag range at 2 A, 4 A, 6 A, 10 A, 16 A, 20 A, 25 A and 32 A.

This standardized family allows selection of different current ratings while retaining the applicable blade-tag configuration.

Suitable for Industrial Electrical Systems

The 3NWNS20 can be considered for compatible applications such as:

• Industrial electrical panels

• Feeder protection

• Low-voltage distribution

• Electrical equipment protection

• Machinery protection

• Control-panel circuits

• Compatible BS HRC fuse assemblies

• Replacement of matching HRC fuse links

Actual application should be based on system voltage, load current, prospective short-circuit current and the complete protection design.

Fuse Replacement Applications

The 3NWNS20 can be used as a replacement where the existing fuse requires compatible:

• Rated current

• Rated voltage

• Breaking capacity

• Fuse size

• Tag configuration

• Operating class

A replacement fuse should not be selected solely because the ampere rating is the same. Mechanical compatibility with the fuse holder is equally important.

Standardized Siemens Fuse Solution

The 3NWNS20 is part of the Siemens 3NW blade-tag series, making it useful for standardized procurement where compatible fuse bases or holders are already installed.

The availability of multiple current ratings in the same blade-tag family can simplify replacement and spare-part stock management.

Standard Package Quantity

Siemens pricing documentation lists the standard package quantity for 3NWNS20 as 20 pieces.

This is useful for:

• Maintenance stock

• Panel-building procurement

• Replacement requirements

• Electrical contractors

• Industrial buyers

• Spare-part inventory

Suitable for Electrical Panel Builders and Industrial Buyers

The Siemens 3NWNS20 is relevant for:

• Electrical panel builders

• Industrial buyers

• Maintenance departments

• Electrical contractors

• OEM equipment maintenance

• Electrical product dealers

• Replacement-part procurement

For SB Smart, the product is positioned around industrial electrical product supply and procurement, without claiming automation integration or automation-service work.

Key Features

• Siemens 3NW series HRC fuse

• Article number 3NWNS20

• 20 A rated current

• 415 V AC rated voltage

• 80 kA breaking capacity

• Size F1

• Blade tag

• GG operating class

• BS-type low-voltage HRC fuse

• Designed for overload and short-circuit protection

• Suitable for compatible fuse holders and fuse systems

• Standard package quantity: 20 pieces

Benefits

• 20 A rating: Suitable for compatible low-current electrical circuits.

• 80 kA breaking capacity: Provides high fault-current interruption capability within the specified rating.

• 415 V AC rating: Suitable for compatible low-voltage AC systems.

• GG operating class: Provides general-purpose overload and short-circuit protection.

• Blade tag: Supports compatibility with the corresponding blade-tag mounting arrangement.

• F1 size: Suitable where the same physical fuse format is required.

• HRC construction: Designed for high fault-current interruption within its rated capacity.

• Standardized Siemens fuse: Suitable for compatible industrial electrical protection systems.

• 20-piece standard package: Useful for stock and maintenance procurement.

Why Choose Siemens 3NWNS20?

The Siemens 3NWNS20 is a 20 A, 415 V AC BS-type HRC fuse with 80 kA breaking capacity, Size F1, GG operating class and blade tag.

It is suitable for customers looking to buy or source Siemens HRC fuse links for industrial electrical protection, panel maintenance and replacement requirements.

For SB Smart, this product is best presented as a Siemens industrial electrical protection component for supply and procurement across India.

Delivery Across India

SB Smart supplies Siemens industrial electrical products across Faridabad, Gurgaon/Gurugram, Delhi NCR, Haryana, Noida, Punjab, Mumbai and other major Indian cities.

Major delivery locations include:

• Faridabad

• Delhi

• Gurgaon/Gurugram

• Delhi NCR

• Noida

• Greater Noida

• Haryana

• Punjab

• Mumbai

• Pune

• Ahmedabad

• Bengaluru

• Hyderabad

• Chennai

• Kolkata

• Jaipur

• Chandigarh

• Lucknow

• Indore

• Surat

• Vadodara

• Nagpur

• Coimbatore

• And other major cities across India

Frequently Asked Questions

1. What is Siemens 3NWNS20?

The 3NWNS20 is a Siemens low-voltage HRC fuse (BS) rated at 20 A and 415 V AC.

2. What is the breaking capacity?

The breaking capacity is 80 kA.

3. What is the fuse size?

The exact fuse is Size F1.

4. What type of tag does it have?

The 3NWNS20 uses a blade tag.

5. What is the operating class?

The operating class is GG.

6. What voltage is it rated for?

It is rated at 415 V AC.

7. Is it an HRC fuse?

Yes. The 3NWNS20 is a low-voltage HRC fuse in the Siemens 3NW BS range.

8. What is the standard package quantity?

The standard package quantity is 20 pieces.

9. Can I replace another 20 A HRC fuse with it?

Only when the voltage, breaking capacity, fuse size, tag configuration, operating class and fuse-holder compatibility are also suitable.

10. Where can I buy Siemens 3NWNS20 in India?

SB Smart supplies Siemens industrial electrical products and HRC fuse links in India for industrial buyers, panel builders, maintenance requirements and replacement procurement.