3NP1143-1DA20

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$311.25
$311.25
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The Siemens 3NP1143-1DA20 fuse switch disconnector is a high-quality industrial component designed for reliable safety monitoring in electrical systems. It features a 3-pole design with NH1 fuse holders and is rated at 250 A, suitable for robust industrial applications. This durable device is engineered for assembly and installation on mounting plates, providing excellent protection and ease of integration into existing electrical panels. With a protection class of IP40 when covered, it ensures safety and longevity even in demanding environments. Its compact dimensions and proven Siemens quality make it a preferred choice among professionals focused on factory control panels and automation systems.

Key Features of Siemens 3NP1143-1DA20

  • Rated operational current of 250 A at 35 °C, supporting up to 690 V AC maximum operating voltage
  • 3-pole fuse switch disconnector with NH1 fuse size for effective circuit protection
  • Protection class IP40 with cover and IP30 without, ensuring safety against dust and accidental contact
  • Suitable for mounting plate assembly and floor mounting in both horizontal and vertical positions
  • Fast and secure box terminal connections facilitate installation and maintenance
  • Compact dimensions: 306 mm height, 183.7 mm width, and 116 mm depth
  • Operational temperature tolerance with rated current from 250 A down to 233 A at 55 °C
  • Maximum permissible let-through current with high-speed activation of 25 kA ensures effective fault clearing
  • Power loss is minimized with 8 W per pole without fuse and up to 31 W in running hot conditions

Explore Siemens 3NP1143-1DA20 specifications for detailed parameters

Parameter Value
Operational Current (AC-21 B, 240 V) 250 A
Operational Current (AC-21 B, 500 V) 200 A
Operational Current (DC-23 B, 440 V) 100 A
Surge Voltage Resistance 8 kV
Protection Class (closed with cover) IP40
Mounting Mounting plate, floor mounting
Dimensions (H × W × D) 306 × 183.7 × 116 mm
Weight 2.924 kg

Applications / Use Case

This Siemens 3NP1143-1DA20 is commonly used in industrial automation worldwide. It serves as a critical component in electrical safety and circuit protection within production line systems, factory control panels, and packaging and conveyor operations. Its robust design ensures reliable interruption of power during fault conditions, protecting sensitive equipment and personnel. The device is ideal for machine automation setups needing dependable disconnect and overcurrent protection, helping maintain system uptime and operational safety.

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3NP1143-1DA20

$311.25

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Does it come with a warranty?

Yes, All products are offered wth 1-Year warranty.

What is the condition of the product?

All products sold are New & Unused.

How fast is shipping?

All products are delivered within 2-8 business days depending on our stock location.

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