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Siemens 3NA3144 LV HRC Fuse Link, Size NH1, 250A, gG, 500V AC / 440V DC
Siemens 3NA3144 LV HRC Fuse Link, Size NH1, 250A, gG, 500V AC / 440V DC
Siemens 3NA3144 LV HRC Fuse Link, Size NH1, 250A, gG, 500V AC / 440V DC
Siemens 3NA3144 LV HRC Fuse Link, Size NH1, 250A, gG, 500V AC / 440V DC
Siemens 3NA3144 LV HRC Fuse Link, Size NH1, 250A, gG, 500V AC / 440V DC
Siemens 3NA3144 LV HRC Fuse Link, Size NH1, 250A, gG, 500V AC / 440V DC

SIEMENS

Siemens 3NA3144 LV HRC Fuse Link, Size NH1, 250A, gG, 500V AC / 440V DC Original Brand New

Model / SKU3NA3144

High-performance LV HRC (Low Voltage High Rupturing Capacity) fuse element designed for robust circuit protection. Featuring a 250A current rating and gG utilization category, this NH1 size fuse ensures reliable performance for general-purpose cable and line protection in industrial applications.

Original price was: $27.96.Current price is: $11.19.
In stockShips in 1–3 business days
  • ConditionOriginal Brand New
  • Warranty12 months
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Description

Overview

The Siemens 3NA3144 is part of the trusted Sentron series, engineered to provide superior short-circuit and overload protection. This NH-type fuse link is built for durability and precision, featuring live grip lugs for secure handling and a front indicator for immediate visual identification of tripped states.

It is optimized for both AC and DC environments, making it a versatile choice for power distribution boards and industrial switchgear.

Key Benefit & Function

  • Dual Protection: The gG (General Purpose) characteristic provides full-range breaking capacity, protecting equipment from both overloads and short circuits.

  • High Breaking Capacity: Rated for 500V AC and 440V DC, ensuring safety across diverse electrical architectures.

  • Visual Status Monitoring: Equipped with a Front Indicator that allows maintenance teams to quickly identify and replace blown fuses, reducing downtime.

  • Safe Handling: Features Live Grip Lugs, designed for compatibility with standard NH fuse pullers for secure installation and removal.

  • Siemens Reliability: Manufactured to high European standards, ensuring long-term stability and precise tripping curves.

Technical Specification

  • Fuse Type: LV HRC Fuse Element

  • Size: NH1

  • Rated Current (In): 250 A

  • Utilization Category: gG

  • Rated Voltage AC (Un): 500 V

  • Rated Voltage DC (Un): 440 V

  • Indicator: Front Indicator

  • Connection Type: Live Grip Lugs

  • Brand: Siemens

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Datasheet in PDF

Specifications

SKU / Model3NA3144
BrandSIEMENS
product brand nameSENTRON
product designationLV HRC fuse link
design of the productWith blade contacts
design of an identification indicatorFront indicators
design of the switching contactNon-corroding, silver-plated
design of the fuse linkLV HRC fuse link
size of fuse system / acc. to DIN EN 60269-1NH1
operating class of the fuse linkgG
mounting typenon-insulated grip lugs
type of voltage / of the operating voltageAC/DC
supply voltage-
● at DC440 V
protection class IPIP20, with connected conductors
switching capacity current-
● at DC / acc. to IEC 60947-2 / rated value25 kA
● acc. to IEC 60947-2 / rated value120 kA
power loss [W]18.2 W
power loss [W] / for rated value of the current / at AC / in hot operating state / per pole18.2 W
operational current-
● at 30 °C / rated value245 A
● at 40 °C / rated value237.5 A
● at 45 °C / rated value230 A
● at 50 °C / rated value225 A
● at 55 °C / rated value220 A
● at 60 °C / rated value215 A
● at AC / rated value250 A
width / of the enclosure47.2 mm
mounting positionAny, preferably vertical
ambient temperature / during operation-
● minimum-5 °C
● maximum40 °C
environmental category-20 to +50 at 95% relative humidity
environmental category / during storage90% at 20°C
Test Certificatesother Marine / Shipping
Weight0.443 kg
Dimensions143.00 × 153.00 × 68.00 mm

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