Product Description

Siemens 3NH3330-0RC DIN Fuse Base – 400A, Size 2, for 3NA HRC Fuse Links

The Siemens 3NH3330-0RC is a SENTRON low-voltage HRC fuse base for the Siemens 3NA DIN fuse system. The exact base is a 1-pole, 400 A, Size 2 (NH2) version with a flat terminal and an M10 connection screw. Siemens technical documentation specifies 690 V AC and 440 V DC supply-voltage ratings for the 3NH3330 fuse base.

For SB Smart, this product is positioned as a Siemens industrial electrical protection accessory for fuse mounting, panel assembly, replacement, maintenance and procurement requirements.

Siemens 3NH3330-0RC DIN Fuse Base

The 3NH3330-0RC belongs to the Siemens 3NH low-voltage HRC fuse-base range, used with compatible 3NA HRC fuse links. The corresponding Siemens technical data identifies the 3NH3330 as a Size 2, 1-pole, 400 A LV HRC fuse base.

The fuse base provides the mechanical mounting and electrical connection for the compatible fuse link. The actual overcurrent protection is provided by the HRC fuse installed in the base.

400 A Rated Current

The exact 3NH3330-0RC is rated at 400 A. Siemens' official technical data confirms the 400 A rating.

The base rating should be considered together with the selected fuse link, conductor capacity, system voltage and the complete protection-coordination requirements.

Size 2 / NH2 Fuse System

The 3NH3330-0RC is a Size 2 fuse base and is designed for the NH2 fuse system according to EN 60269-1.

The physical dimensions of the fuse link must match the base. When replacing an existing fuse base, verify both the fuse size and the electrical ratings.

Designed for Siemens 3NA HRC Fuses

The 3NH fuse-base family is used with compatible Siemens 3NA low-voltage HRC fuse links. Siemens' 3NH documentation identifies the 3NH3330 as the Size 2, 400 A configuration for the NH2 fuse system.

The exact 3NA fuse article should be checked before installation to ensure the current rating, voltage, utilization category and physical configuration are compatible.

1-Pole Construction

The 3NH3330-0RC is a 1-pole fuse base. Siemens' official data specifies one pole for the exact 3NH3330 configuration.

This configuration is suitable where individual fuse mounting is required within a low-voltage HRC protection assembly.

Flat Terminal Connection

The exact 3NH3330 uses a flat-type terminal for the main current circuit. Siemens specifies an M10 connection screw for the flat terminal arrangement.

The terminal arrangement should be considered during panel design to ensure suitable busbar or conductor connections.

690 V AC and 440 V DC Rating

Siemens technical data specifies a supply voltage rating of 690 V AC and 440 V DC for the 3NH3330.

The actual system voltage should always be checked against both the fuse base and the selected HRC fuse link.

120 kA AC Breaking Capacity

Siemens' current datasheet lists a maximum short-circuit current breaking capacity of 120 kA at AC rated value for the 3NH3330. A 25 kA DC value is also specified under the documented DC conditions.

The complete protection arrangement must still be selected according to the prospective fault current and coordination requirements of the installation.

Fixed Mounting

The 3NH3330 uses a fixed mounting arrangement. Siemens technical data specifies fixed mounting and no busbar mounting for this configuration.

This is an important consideration when designing or modifying an electrical panel.

Industrial Fuse Protection Applications

The 3NH3330-0RC can be considered for compatible applications such as:

• Industrial distribution panels

• High-current feeder protection

• Power distribution assemblies

• Electrical switchboards

• Main distribution circuits

• Industrial equipment protection

• DIN HRC fuse installations

• Fuse-base replacement applications

Actual application should be based on the complete electrical protection design.

Fuse Base Replacement and Maintenance

The 3NH3330-0RC is useful when an existing Size 2 DIN fuse base needs replacement or when a new electrical panel requires a mounting base for a compatible Siemens 3NA/NH2 HRC fuse.

Before replacement, verify:

• Fuse-link type

• NH fuse size

• Rated current

• System voltage

• Terminal arrangement

• Mounting method

• Electrical clearances

• Compatibility with the selected fuse

Standardized Siemens 3NH Fuse Base Range

Siemens' LV HRC fuse-system documentation identifies the major DIN fuse-base sizes, including:

• Size 2 – 400 A: 3NH3330

• Size 3 – 630 A: 3NH3430

• Size 4 – 1250 A: 3NH3530

This provides a standardized fuse-base selection path for different high-current Siemens HRC fuse systems.

Technical Dimensions

Siemens documentation specifies the following dimensions for the 3NH3330 Size 2 fuse base:

• Width b1: 35 mm

• Width b2: 49 mm

• Width b3: 30 mm

• Height h1/h2: 113 mm

• h3: 25 mm

• h4: 202 mm

• h5: 227 mm

• h6: 228 mm

• Mounting-hole diameter: 10.5 mm

• t1: 35 mm

• t2: 55 mm

• t3: 90 mm

• t4: 115 mm

These dimensions should be checked against the actual panel layout before installation.

Suitable for Electrical Panel Builders and Industrial Buyers

The Siemens 3NH3330-0RC 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.

Key Features

• Siemens SENTRON 3NH series DIN fuse base

• Article number 3NH3330-0RC

• 400 A rated current

• Size 2

• NH2 fuse system

• 1-pole

• Compatible with Siemens 3NA LV HRC fuse links

• 690 V AC rating

• 440 V DC rating

• Up to 120 kA AC short-circuit breaking capacity under specified conditions

• Flat-type terminal

• M10 connection screw

• Fixed mounting

• Approx. 809 g net weight

Benefits

• 400 A capacity: Suitable for compatible high-current industrial protection assemblies.

• Size 2 / NH2 design: Matches the applicable Siemens DIN fuse format.

• 120 kA AC breaking capacity: Suitable for high prospective fault-current applications within the specified conditions.

• Flat terminal connection: Supports compatible high-current electrical connections.

• 690 V AC rating: Suitable for compatible low-voltage distribution systems.

• Standardized Siemens design: Simplifies fuse-base selection and replacement.

• Fixed mounting: Suitable for compatible industrial panel installations.

• 1-pole construction: Useful for individual fuse mounting arrangements.

Why Choose Siemens 3NH3330-0RC?

The Siemens 3NH3330-0RC is a 400 A, Size 2, 1-pole DIN-type LV HRC fuse base for the NH2 fuse system, with a flat M10 terminal connection, 690 V AC / 440 V DC rating and up to 120 kA AC breaking capacity under the specified conditions.

It is suitable for customers looking to buy or source Siemens DIN fuse bases for industrial electrical distribution, high-current feeder protection, panel assembly, maintenance and replacement requirements.

For SB Smart, this product is best presented as a Siemens industrial electrical protection accessory for supply and procurement across India.

Delivery Across India

SB Smart supplies Siemens industrial electrical products and accessories 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

Frequently Asked Questions

1. What is Siemens 3NH3330-0RC?

The 3NH3330-0RC is a Siemens SENTRON low-voltage HRC fuse base rated at 400 A, with a Size 2 / NH2, 1-pole configuration.

2. Which fuse system is compatible?

It is designed for the NH2 fuse system and is used with compatible Siemens 3NA LV HRC fuse links.

3. What is the rated current?

The rated current is 400 A.

4. What is the fuse-base size?

The exact base is Size 2.

5. What is the voltage rating?

The base is rated at 690 V AC and 440 V DC under the specified conditions.

6. What type of terminal does it use?

It uses a flat-type terminal with an M10 connection screw.

7. What is the AC breaking capacity?

Siemens specifies up to 120 kA AC under the stated conditions.

8. Is it a fuse or a fuse base?

It is a fuse base. The compatible HRC fuse link provides the actual overcurrent protection.

9. Is it suitable for industrial panels?

Yes. It is intended for compatible low-voltage HRC fuse systems, industrial distribution and high-current protection assemblies.

10. Where can I buy Siemens 3NH3330-0RC in India?

SB Smart supplies Siemens industrial electrical products, DIN fuse bases and HRC fuse accessories in India for industrial buyers, panel builders, maintenance requirements and replacement procurement.