Rittal SV 9344.250 fuse-switch disconnector - IEC/DIN EN 60 947-3
Part Number: 9344250
Manufacturer
Rittal
Part number
9344250
Category
Alt Part Number
SV 9344.250
Quick Summary
The Rittal SV 9344.250 fuse-switch disconnector provides robust isolation for power distribution panels. Engineers often struggle with reliable fuse monitoring and mounting flexibility in compact switchgear. This unit meets IEC/DIN EN 60 947-3, UL 94 fire protection, and CE compliance for safer, regulatory-ready installations. Its 3-pole, 400 A rating at 690 V supports scalable panel designs, while plate-mount compatibility reduces assembly time. By integrating electromechanical fuse monitoring, you gain actionable status signals that streamline maintenance and minimize downtime.
Product Information
Extended Description
9344250 Rittal: SV NH fuse-switch disconnector, size 2, 400 A, 690 V, 3-pole, screw M10, with electromechanical fuse monitoring, for mounting plate assembly
Article number
SV 9344.250
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: 50 mm | Clamping area height: 10 mm
for mounting plate assembly
Yes
Cable outlet
Top/bottom
Type of electrical connection
Screw M10
Rated operating current max.
400 A
For NH size
2
Test specification
IEC/DIN EN 60 947-3
Dimensions
Width: 210 mm | Height: 298 mm
Connection for round conductor
10 ‐ 240 mm²
Rated operating voltage
690 V, 3~
Number of poles
3-pole
Packs of
1 pc(s).
Weight/pack
4.04 kg
Copper weight (kg per piece)
1
Customs tariff number
85369095
EAN
4028177540712
ETIM 9
EC001040
ECLASS 8.0
27371401
Product description
SV NH fuse-switch disconnector, size 2, 400 A, 690 V, 3-pole, screw M10, with electromechanical fuse monitoring, for mounting plate assembly
Feature → Business Impact → Application: Electromechanical fuse monitoring built into the SV 9344.250 provides early fault detection, enabling proactive maintenance and reducing unplanned downtime in critical power circuits; ideal for control panels and switchgear where reliability matters. Feature → 3-pole, 400 A at 690 V → High-current switching with safe isolation for large distribution boards, improving overall system safety and resilience in industrial environments. Feature → Cable termination 10–240 mm² with screw M10 → Flexible, secure connections that simplify wiring during panel assembly and reduce torque-related contact issues. Feature → Mounting plate compatibility and laminated copper bar clamping area (50 mm x 10 mm) → Faster installation and cleaner bus-bar integration in compact enclosures. Feature → Polyamide body with UL 94 fire protection → Enhanced fire safety compliance and long-term cabinet integrity in harsh environments. Feature → Top/bottom cable outlets → Versatile routing options to fit diverse panel layouts and minimize interference between components.
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FAQs
SV 9344.250 is designed for mounting plate assemblies with screw M10 terminals and is compatible with NH size 2 configurations. It supports top or bottom cable outlets and a clamping area sized for laminated copper bars (50 mm wide, 10 mm high). This combination enables straightforward integration into standard Rittal enclosure designs without custom hardware.
Key specs include a rated operating current of 400 A, rated operating voltage of 690 V (3-phase), 3-pole configuration, and a screw M10 connection. It accepts round conductors in the range of 10–240 mm², making it suitable for high-current distribution in industrial panels while ensuring compliant fault isolation.
Yes. The SV 9344.250 is designed for compliance with IEC/DIN EN 60 947-3 and CE-marked applications, and it uses polyamide with fire protection rated to UL 94. This combination supports safe operation in regulated environments and helps streamline certification for panel builders across global markets.
Electromechanical fuse monitoring provides early fault indication and status feedback for each fuse element, enabling scheduled maintenance before a fault escalates. This reduces unplanned outages, minimizes downtime, and extends the life of power distribution assets by ensuring timely fuse replacement and verification within complex switchgear.
When installing the SV 9344.250, plan for its mounting plate compatibility and the 210 mm x 298 mm footprint. Use the top/bottom cable outlets to route conductors cleanly and avoid interference. Consider copper weight per piece (1 kg) and weight per pack (4.04 kg) to ensure panel support structures are rated for handling and vibration in dynamic environments.