Product Description

Siemens 3NWTMF400 HRC Fuse – 400A, 415V AC, Size C1, Central Tag

The Siemens 3NWTMF400 is a low-voltage HRC fuse (BS) from the Siemens 3NW series, designed to provide overload and short-circuit protection in compatible low-voltage electrical systems. The exact article is rated at 400 A, 415 V AC, with an 80 kA breaking capacity, Size C1, GG operating class, and a central tag configuration.

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 3NWTMF400 belongs to the Siemens 3NW BS HRC fuse range, designed for low-voltage circuit protection. The 3NW family is specified for 415 V AC / 240 V DC applications and provides up to 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 electrical distribution and protection applications.

400 A Rated Current

The exact 3NWTMF400 has a rated current of 400 A.

The 400 A rating should be selected according to the protected circuit, conductor capacity, equipment rating and overall protection-coordination requirements.

A replacement fuse should always have compatible electrical and mechanical characteristics.

415 V AC Rated Voltage

The 3NWTMF400 is rated for 415 V AC. Siemens 3NW BS fuse documentation identifies the family for low-voltage systems rated at 415 V AC / 240 V DC.

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

80 kA Breaking Capacity

The exact 3NWTMF400 has an 80 kA breaking capacity.

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

This makes the fuse suitable for compatible industrial distribution systems where fault levels may be significant.

Size C1

The 3NWTMF400 is identified as Size C1 in current product information.

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

When replacing an existing fuse, the physical dimensions and mounting configuration should be checked together with the electrical ratings.

Central Tag Configuration

The 3NWTMF400 uses a central tag configuration. Current product information identifies the article specifically with a central tag.

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

GG Operating Class

The exact 3NWTMF400 is specified as an operating class 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.

High Rupturing Capacity Protection

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

The 3NWTMF400 combines:

• 400 A rated current

• 415 V AC rated voltage

• 80 kA breaking capacity

• Size C1

• Central tag

• GG operating class

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

Suitable for Industrial Electrical Systems

The 3NWTMF400 can be considered for compatible applications such as:

• Industrial distribution panels

• Feeder circuits

• Electrical distribution systems

• Industrial power panels

• Machinery protection

• Commercial electrical installations

• 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 3NWTMF400 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. The physical fuse format and holder compatibility must also be confirmed.

Standardized Siemens Fuse Solution

The 3NWTMF400 is part of the higher-current central-tag Siemens 3NW fuse range. Siemens documentation lists the 3NW central-tag family across several current ratings, including 355 A and 400 A versions under the corresponding product group.

This standardized range can help industrial buyers select compatible fuse links according to current rating and physical configuration.

Single-Unit Packaging

Current Siemens pricing documentation lists the 3NWTMF400 with a standard package quantity of 1 piece.

Single-unit packaging is useful for:

• Individual replacement

• Maintenance procurement

• Spare-part requirements

• Panel-building orders

• Industrial electrical sourcing

Suitable for Electrical Panel Builders and Industrial Buyers

The Siemens 3NWTMF400 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, dealer/distributor procurement and replacement sourcing, without claiming automation integration or automation-service work.

Key Features

• Siemens 3NW series HRC fuse

• Article number 3NWTMF400

• 400 A rated current

• 415 V AC rated voltage

• 80 kA breaking capacity

• Size C1

• Central 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

• Single-unit packaging

• Standard package quantity: 1 piece

Benefits

• 400 A rating: Suitable for compatible higher-current industrial 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.

• Central tag: Supports compatibility with the corresponding central-tag mounting arrangement.

• C1 size: Suitable where the same physical fuse format is required.

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

• Single-unit packaging: Convenient for individual replacement and procurement.

• Siemens product: Provides a standardized industrial fuse solution.

Why Choose Siemens 3NWTMF400?

The Siemens 3NWTMF400 is a 400 A, 415 V AC BS-type HRC fuse with 80 kA breaking capacity, Size C1, GG operating class and central tag.

It is a suitable choice for customers looking to buy or source Siemens HRC fuse links for industrial electrical distribution, feeder 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 3NWTMF400?

The 3NWTMF400 is a Siemens low-voltage HRC fuse (BS) rated at 400 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 C1.

4. What type of tag does it have?

The 3NWTMF400 uses a central 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 3NWTMF400 is a low-voltage HRC fuse in the Siemens 3NW BS range.

8. Is it supplied individually?

Yes. Siemens pricing documentation lists a standard package quantity of 1 piece.

9. Can I replace another 400 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 3NWTMF400 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.