Siemens 250A NH Fuse, NH1, 500V ac

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Subtotal (1 pack of 3 units)*

£36.261

(exc. VAT)

£43.512

(inc. VAT)

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3 - 12£12.087£36.26
15 - 72£11.19£33.57
75 - 147£10.79£32.37
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RS Stock No.:
397-565
Mfr. Part No.:
3NA3144
Brand:
Siemens
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Brand

Siemens

Current Rating

250A

Fuse Size

NH1

Voltage Rating

500V ac

Fuse Standard

CSA 22.2, IEC EN 60269, VDE 0636

Application Category

gG

High Rupture Capacity

Yes

Overall Length

137mm

Tag Type

Blade

Tag Orientation

Centred

Body Length

75mm

Body Width

47mm

COO (Country of Origin):
GR

Siemens NH Fuse, 137mm Overall Length, NH1 Fuse Size - 3NA3144


This NH fuse provides overcurrent protection for various electrical applications. With a current rating of 250A and a voltage rating of 500V AC, it ensures dependable circuit performance. Its robust construction is suitable for industrial environments, meeting strict safety standards.

Features & Benefits


• High rupture capacity for effective fault protection
• Front indicators for improved visibility
• Silver-plated contacts resist corrosion and enhance conductivity
• Blade contacts ensure secure connections
• Compliant with CSA 22.2 and IEC EN 60269 standards
• Minimal power loss of 18.2W at rated current

Applications


• Ideal for high-capacity installations with durability
• Designed for where space-saving dimensions are important
• Works with non-insulated grip lugs in installations

What ambient temperature range is suitable for operation?


The operating temperature should range from -5°C to 40°C for optimal performance.

How does it compare to other fuse types in terms of breaking capacity?


It has a breaking capacity of 120kA at AC and 25kA at DC, making it effective for various conditions.

Is there a specific mounting requirement for installation?


It can be mounted in any position, though a vertical orientation is preferred for better accessibility.

What maintenance is required for optimal reliability?


Regular inspections for contact corrosion and verification of connections can help sustain performance longevity.

Approvals

DIN VDE 0636, DIN VDE 0636-2, CSA 22.2 No. 106

Standards

IEC 60269-1, IEC 60269-2, EN 60269-1

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