The Siemens 3NWTSF125 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 125 A, 415 V AC, with an 80 kA breaking capacity, Size B3, GG operating class, and a central tag configuration.
For SB Smart, this product is best positioned as a Siemens industrial electrical protection component for supply, procurement, replacement and maintenance requirements.
The 3NWTSF125 belongs to the Siemens 3NW BS HRC fuse range, designed for low-voltage circuit protection. The 3NW family is available in a broad current range and uses different physical and tag configurations to match compatible fuse holders. Siemens-related technical documentation specifies the 3NW range for 415 V AC / 240 V DC systems, with an 80 kA AC breaking capacity and gG utilization category.
The fuse is designed to interrupt overload and short-circuit currents within its specified electrical ratings.
The exact 3NWTSF125 has a rated current of 125 A.
The 125 A rating should be selected according to the protected circuit, conductor capacity, equipment rating and the overall protection-coordination requirements.
The fuse should only be replaced with a device having compatible electrical and mechanical specifications.
The 3NWTSF125 is rated for 415 V AC. Product specifications for the exact article confirm this rated voltage.
The system voltage should always be checked before selecting or replacing the fuse.
The exact 3NWTSF125 has an 80 kA breaking capacity.
A high breaking capacity enables the HRC fuse to interrupt high prospective fault currents within its specified operating conditions.
This is particularly relevant for industrial and electrical distribution systems where available short-circuit currents can be high.
The 3NWTSF125 is identified as Size B3.
The physical fuse size must match the corresponding fuse base, holder or switch-fuse arrangement.
When replacing an existing fuse, the physical size should therefore be checked along with the electrical ratings.
The 3NWTSF125 uses a central tag configuration. The exact product listings and Siemens-related documentation identify 3NWTSF125 within the central-tag range.
The tag configuration is an important mechanical-selection parameter because the fuse must fit the corresponding fuse holder or mounting arrangement.
The 3NWTSF125 is specified with operating class GG.
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 means High Rupturing Capacity. An HRC fuse is designed to interrupt high fault currents safely within its specified breaking capacity.
The 3NWTSF125 combines:
125 A rated current
415 V AC rated voltage
80 kA breaking capacity
Size B3
Central tag
GG operating class
These specifications make it suitable for compatible low-voltage industrial protection applications.
Technical documentation for the Siemens 3NW series lists the 3NWTSF125 with approximately 11 W rated power dissipation.
This parameter can be relevant when calculating heat dissipation and thermal conditions inside enclosed electrical panels.
The 3NWTSF125 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.
The 3NWTSF125 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.
The Siemens 3NWTSF125 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.
Siemens 3NW series HRC fuse
Article number 3NWTSF125
125 A rated current
415 V AC rated voltage
80 kA breaking capacity
Size B3
Central tag
GG operating class
BS-type low-voltage HRC fuse
Designed for overload and short-circuit protection
Approx. 11 W power dissipation
Suitable for compatible fuse holders and fuse systems
Suitable for industrial electrical applications
125 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.
B3 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.
11 W power dissipation: Provides a useful reference for thermal panel-design calculations.
The Siemens 3NWTSF125 is a 125 A, 415 V AC BS-type HRC fuse with 80 kA breaking capacity, Size B3, 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.
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
The 3NWTSF125 is a Siemens low-voltage HRC fuse (BS) rated at 125 A and 415 V AC.
The breaking capacity is 80 kA.
The exact fuse is Size B3.
The 3NWTSF125 uses a central tag.
The operating class is GG.
It is rated at 415 V AC.
Yes. The 3NWTSF125 is a low-voltage HRC fuse in the Siemens 3NW BS range.
The Siemens 3NW technical documentation lists approximately 11 W rated power dissipation for the 3NWTSF125.
Only when the voltage, breaking capacity, fuse size, tag configuration, operating class and fuse-holder compatibility are also suitable.
SB Smart supplies Siemens industrial electrical products and HRC fuse links in India for industrial buyers, panel builders, maintenance requirements and replacement procurement.
| Specification | Details |
|---|---|
| Product Name | Central Tag |
| Manufacturer | Siemens |
| Product Series | 3NW HRC Fuse Accessories |
| Model Number | 3NWTSF125 |
| Product Type | Fuse Connection Accessory |
| Compatible Fuse Series | Siemens 3NW HRC Fuses |
| Fuse Standard | BS Type HRC Fuses |
| Configuration | Central Tag |
| Function | Fuse Mounting & Electrical Connection |
| Application | Low Voltage Fuse Protection Systems |
| Industrial Application | Yes |
| Commercial Application | Yes |
| Utility Application | Yes |
| Construction | Heavy-Duty Industrial Grade |
| Brand | Siemens |
| Condition | New & Genuine Product |
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