Rittal SV 9343.300 Fuse-Switch Disconnector - IEC 947-3
Part Number: 9343300
Manufacturer
Rittal
Part number
9343300
Category
Alt Part Number
SV 9343.300
Quick Summary
SV NH fuse-switch disconnector isolates 630 A, 690 V circuits in power distribution panels and switchgear, delivering reliable fault isolation and controlled maintenance. This device addresses downtime and arc-flash risk by providing a robust, mechanical isolation point with proven electrical performance. It meets IEC/DIN EN 60 947-3 performance criteria and features UL 94 fire-rated polyamide housing for added safety in demanding environments. The box-terminal connection and copper conductors ensure low contact resistance and durable performance in high-current applications. By combining precise copper bar clamping and compatible busbar spacing, it simplifies installation, reduces wiring complexity, and supports scalable panel designs for industrial automation and energy management.
Product Information
Extended Description
9343300 Rittal: SV NH fuse-switch disconnector, size 3, 630 A, 690 V, 3-pole, box terminal
Article number
SV 9343.300
Material
Polyamide | Fire protection corresponding to UL 94 | Contact tracks: Electrolytic copper, silver-plated
Colour
Chassis: RAL 7035 | Cover: RAL 7035/7001
Clamping area for laminated copper bars
Clamping area width: 32 mm | Clamping area height: 10 mm
Note
Connection of sector-shaped conductors 120 – 300 mm².
For bar systems with centre-to-centre spacing
60 mm
Cable outlet
Top/bottom
Type of electrical connection
Box terminal
Rated operating current max.
630 A
For NH size
3
Note
The technical data may vary for UR applications. Applications to UR only in conjunction with "Special Purpose Fuses".
Test specification
IEC/DIN EN 60 947-3
Dimensions
Width: 250 mm | Height: 298 mm
Connection for round conductor
95 ‐ 300 mm²
To fit busbars
Height: 5, 10 mm
Clamping area for laminated copper bars
20 mm
Rated operating voltage
690 V, 3~
Number of poles
3-pole
Packs of
1 pc(s).
Weight/pack
4.5 kg
Copper weight (kg per piece)
1.44
Customs tariff number
85369095
EAN
4028177540446
ETIM 9
EC001040
ECLASS 8.0
27371401
Product description
SV NH fuse-switch disconnector, size 3, 630 A, 690 V, 3-pole, box terminal
Feature → Business Impact → Application: 3-pole NH fuse-switch disconnector delivers safe, mechanical isolation for three-phase power feeds, reducing downtime during maintenance and enabling predictable fault-clearing; ideal for motor control centers and distribution panels in manufacturing plants. Feature → Application compatibility → Benefit: Top/bottom cable outlets and box-terminal connection simplify wiring layouts, accelerating panel assembly and reducing field labor costs while maintaining robust current paths up to 630 A at 690 V. Feature → Material and safety → Benefit: UL94 fire-rated polyamide housing with silver-plated copper contact tracks improves fire safety compliance and minimizes contact resistance, boosting long-term reliability in harsh environments such as machine builds and process lines. Feature → Busbar and conductor integration → Benefit: Clamping area options for laminated copper bars and a 60 mm center-to-center spacing support clean, compact busbar layouts; reduces installation errors and improves thermal performance. Feature → Compliance and lifecycle → Benefit: IEC/DIN EN 60 947-3 testing standard conformance plus precise weight 4.5 kg per pack ensures consistent replacement planning and predictable lifecycle costs in industrial automation projects. Features are designed to address common objections about mounting footprint, wiring complexity, and maintenance intervals by offering proven, scalable integration with existing power management architectures.
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FAQs
Installation begins by aligning the 60 mm center-to-center busbar spacing with the unit’s mounting feet, then seating the NH size 3 module onto the busbars. Ensure the clamping area for laminated copper bars is compatible (up to 32 mm width and 10 mm height) and that the conductor connections are secured via the box-terminal or top/bottom cable outlets for a clean, secure interface.
Compatible conductors include round conductors 95–300 mm² and laminated copper bars with 32 mm width, 10 mm height (clamping area). For busbar systems, centre-to-centre spacing of 60 mm is recommended. The device supports 630 A at 690 V and provides a robust interface for high-current distribution in panels.
Yes. The device is tested to IEC/DIN EN 60 947-3 standards and features UL94-rated polyamide housing for fire safety. This combination supports compliance in many regions for safe isolation devices used in power distribution and switchgear applications.
The unit measures 250 mm in width and 298 mm in height and weighs 4.5 kg per pack. It is designed for box-terminal connections with top or bottom cable outlets and is suitable for NH size 3 installations, enabling compact panel integration and straightforward replacement in existing footprints.
The SV 9343.300 combines durable copper contact paths, UL94-rated housing, and standardized busbar compatibility, reducing maintenance intervals and downtime. Its robust design supports longer service life in high-current environments, lowering lifecycle costs and enabling faster, safer panel commissioning in automation and energy-management projects.