Siemens 250A NH Fuse, NH1, 500V ac

RS Stock No.:: 397-565
Mfr. Part No.:: 3NA3144
Manufacturer:: Siemens

Bulk discount available

Subtotal (1 pack of 3 units)**

€41.18

(exc. VAT)

€50.65

(inc. VAT)

15 In stock for delivery within 2 working days*

* Delivery dates may change based on your chosen quantity and delivery address.

Units	Per unit	Per Pack**
3 - 12	€13.727	€41.181
15 - 72	€12.71	€38.13
75 - 147	€12.257	€36.771
150 - 297	€11.85	€35.55
300 +	€11.45	€34.35

**price indicative

RS Stock No.:: 397-565
Mfr. Part No.:: 3NA3144
Manufacturer:: Siemens

NH Fuse Links, 3NA3 Series, Size 1, Type gG

NH fuse links with front indicator
The front-face red indicator signals when the fuse cuts out
Operating class gG (for cable and line protection)
For selective line protection and system protection in functional building, industry and power supply companies

Standards

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

Approvals

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

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

Attribute	Value
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
Body Length	75mm
Tag Orientation	Centred
Body Width	47mm

Siemens 250A NH Fuse, NH1, 500V ac

NH Fuse Links, 3NA3 Series, Size 1, Type gG

Standards

Approvals

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

Features & Benefits

Applications

What ambient temperature range is suitable for operation?

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

Is there a specific mounting requirement for installation?

What maintenance is required for optimal reliability?

Approvals

Standards

Related links