Product Description

Siemens 3NH3430-0RC DIN Fuse Base – 630A, Size 3, for 3NA33 Fuse Links

The Siemens 3NH3430-0RC is a DIN-type LV HRC fuse base from the Siemens 3NH series, designed for compatible 3NA HRC fuse links. The exact base is a 1-pole, 630 A, Size 3 version with a flat terminal connection. Siemens' current technical data identifies the 3NH3430 as an LV HRC fuse base for NH3 fuse links, rated for 630 A and 690 V AC.

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 3NH3430-0RC DIN Fuse Base

The 3NH3430-0RC belongs to the Siemens 3NH DIN fuse-base range used with Siemens 3NA LV HRC fuse links. Siemens documentation identifies 3NH3430 as the Size 3, 630 A, 1-pole fuse base with a flat-terminal connection.

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.

630 A Rated Current

The exact 3NH3430-0RC is rated at 630 A. Current product listings and Siemens technical documentation confirm the 630 A rating.

The 630 A rating should be considered together with the selected fuse link, conductor capacity, system voltage and complete protection-coordination requirements.

Size 3 Fuse Base

The 3NH3430-0RC is a Size 3 DIN fuse base. Siemens' fuse-system documentation identifies Size 3 bases for 630 A applications.

The physical fuse size must match the corresponding NH fuse link. Therefore, both the fuse size and electrical ratings should be verified before selecting a replacement.

Suitable for Siemens 3NA HRC Fuses

The 3NH3430-0RC is part of the fuse-base system for compatible Siemens 3NA LV HRC fuse links. The corresponding 630 A Size 3 configuration is used with the applicable NH3 fuse system.

The exact 3NA fuse article should always be checked before installation to ensure mechanical and electrical compatibility.

DIN-Type Fuse Base

The 3NH3430-0RC is a DIN-type fuse base intended for Siemens' LV HRC fuse system.

The base itself does not provide the complete circuit-protection function. It provides the mounting and connection interface for the selected fuse link.

Flat Terminal Connection

The exact 3NH3430 uses a flat-type terminal for the main current circuit. Siemens technical data specifies a flat connector connection and an M12 connection screw.

This high-current connection arrangement is suitable for compatible busbar or conductor connections when the appropriate installation hardware is used.

690 V AC Rating

Siemens' current technical data specifies a 690 V AC supply voltage for the 3NH3430 fuse base, with 440 V DC also specified.

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

120 kA AC Breaking Capacity

Siemens technical data lists a maximum short-circuit breaking capacity of 120 kA at AC rated value for the 3NH3430 fuse base. A 25 kA DC value is also specified under the documented DC conditions.

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

Fixed Mounting

The 3NH3430 uses a fixed mounting arrangement. Siemens' technical data identifies fixed mounting as the fastening method and does not specify busbar mounting for this version.

This makes the mounting method an important consideration during panel design and replacement.

Industrial Fuse Protection Applications

The 3NH3430-0RC can be considered for compatible applications such as:

• Industrial distribution panels

• High-current feeder protection

• Power distribution assemblies

• Electrical switchboards

• Main power-distribution circuits

• Industrial equipment protection

• DIN HRC fuse installations

• Fuse replacement applications

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

Fuse Replacement and Maintenance

The 3NH3430-0RC is useful when an existing Size 3 DIN fuse base needs replacement or when a new panel requires a mounting base for a compatible 3NA/NH3 HRC fuse.

Before replacing the base, 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 following major DIN fuse-base sizes:

• 3NH3330 – Size 2, 400 A

• 3NH3430 – Size 3, 630 A

• 3NH3530 – Size 4, 1250 A

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

Technical Dimensions

Siemens technical documentation provides the following dimensional information for the 3NH3430 Size 3 fuse base:

• Width-related dimension b1: 35 mm

• b2: 49 mm

• b3: 30 mm

• h1/h2: 121 mm

• h3: 25 mm

• h4: 212 mm

• h5/h6: 242 mm

• Mounting-hole diameter: 10.5 mm

• t1: 35 mm

• t2: 57 mm

• t3: 101 mm

• t4: 130 mm

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

Suitable for Electrical Panel Builders and Industrial Buyers

The Siemens 3NH3430-0RC 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 3NH series DIN fuse base

• Article number 3NH3430-0RC

• 630 A rated current

• Size 3

• 1-pole

• Compatible with NH3 / 3NA HRC fuse systems

• 690 V AC rating

• 440 V DC rating

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

• M12 connection screw

• Flat-type terminal

• Fixed mounting

• Designed for Siemens 3NA LV HRC fuse links

Benefits

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

• Size 3 design: Matches the applicable NH3 fuse format.

• High breaking capacity: Supports installations with substantial prospective fault current within specified conditions.

• Flat terminal connection: Suitable for 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 panel installations.

• Industrial application: Useful for high-current distribution and feeder-protection assemblies.

Why Choose Siemens 3NH3430-0RC?

The Siemens 3NH3430-0RC is a 630 A, Size 3, 1-pole DIN-type LV HRC fuse base with a flat-terminal connection, designed for compatible Siemens 3NA/NH3 fuse systems. Siemens' technical documentation specifies 690 V AC, 440 V DC and up to 120 kA AC breaking capacity under the stated 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 3NH3430-0RC?

The 3NH3430-0RC is a Siemens DIN-type LV HRC fuse base rated at 630 A, with a Size 3, 1-pole configuration.

2. Which fuse system is compatible?

It belongs to the Siemens 3NA/NH3 LV HRC fuse system.

3. What is the rated current?

The rated current is 630 A.

4. What is the fuse-base size?

The exact base is Size 3.

5. What is the voltage rating?

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

6. What type of terminal does it use?

The main current connection uses a flat-type terminal with an M12 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. What other Size 3 Siemens fuse base is available?

The 3NH3420 is the corresponding Size 3 base with a double-busbar terminal arrangement.

10. Where can I buy Siemens 3NH3430-0RC 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.