Rittal SV 9344.230 NH fuse-switch disconnector - IEC/DIN EN 60 947-3
Part Number: 9344230
Manufacturer
Rittal
Part number
9344230
Category
Alt Part Number
SV 9344.230
Quick Summary
The Rittal SV 9344.230 NH fuse-switch disconnector is designed to deliver reliable power switching for industrial switchgear and control panels. Engineers often struggle with coordinating high-current disconnections while keeping mounting space and cabling tidy in compact enclosures. This unit complies with IEC/DIN EN 60 947-3 and UL 94 fire-rating requirements, supporting safety and regulatory alignment in tough manufacturing environments. When integrated with a mounting plate assembly, it offers straightforward installation and scalable panel layouts. The device supports 3-pole operation at 400 A and 400–690 V, with top or bottom cable outlets, yielding reduced downtime and improved maintenance predictability. Its screw M10 terminals and copper contacts deliver enhanced connection reliability under load, aiding long-term operational uptime.
Product Information
Extended Description
9344230 Rittal: SV NH fuse-switch disconnector, size 2, 400 A, 400-690 V, 3-pole, screw M10, with electronic fuse monitoring, for mounting plate assembly
Article number
SV 9344.230
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
400 V - 690 V, 3~
Number of poles
3-pole
Packs of
1 pc(s).
Weight/pack
3.18 kg
Copper weight (kg per piece)
1
Customs tariff number
85365080
EAN
4028177540699
ETIM 9
EC001040
ECLASS 8.0
27371401
Product description
SV NH fuse-switch disconnector, size 2, 400 A, 400-690 V, 3-pole, screw M10, with electronic fuse monitoring, for mounting plate assembly
Feature: Rated current max 400 A with 3-pole design and 400–690 V operating range. Business impact: Enables high-load feeders to be safely switched in a single device, reducing the need for multiple interlocks and cutting wiring complexity. Application: Main distribution in control panels and automated machinery where reliability and simplicity matter. Feature: Mounting plate assembly compatibility. Business impact: Facilitates modular, retrofit-friendly installations that save installation time and labor costs. Application: Panel upgrades and factory automation projects requiring scalable enclosure layouts. Feature: Top/bottom cable outlets and clamping area for laminated copper bars (50 mm x 10 mm). Business impact: Flexible wiring routes and robust conductor termination improve signal integrity and reduce commissioning risk. Application: Dense panel interiors with space constraints. Feature: Material and fire protection (polyamide, UL 94 compliant) and copper-plated contacts. Business impact: Enhanced safety and long-term performance in harsh environments, with durable electrical contact reliability. Application: Enclosures in manufacturing and process automation. Feature: Electronic fuse monitoring. Business impact: Early fault detection and safer shutdowns minimize downtime and support predictive maintenance. Application: Critical power circuits requiring continuous visibility and control. Feature: Dimensions (Width 210 mm, Height 298 mm) and weight (3.18 kg per pack, copper weight 1 kg). Business impact: Predictable fit within standard panels and straightforward logistics planning. Application: OEM builds and field installations where space and weight budgets are tight.
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FAQs
The SV 9344.230 is designed for mounting plate assemblies and NH size 2, enabling straightforward integration into standard switchgear enclosures. It features a 210 mm by 298 mm footprint and a 50x10 mm clamping area for laminated copper bars, simplifying retrofits and ensuring consistent electrical performance in modular panels.
Key specs include 400 A rated operating current, 400–690 V operating voltage, 3-pole configuration, and screw M10 terminals. It supports conductor ranges of 10–240 mm² and offers top or bottom cable outlets. Verifying these ensures compatibility with your panel design, busbar geometry, and cable routing practices.
It complies with IEC/DIN EN 60 947-3 for electrical safety testing and UL 94 fire protection requirements. These certifications support regulatory alignment for industrial switchgear installations and provide confidence in performance under demanding operating conditions.
Plan for the 210 mm width and 298 mm height footprint to fit your enclosure. Use top/bottom cable outlets to simplify routing, and leverage the mounting plate compatibility to enable modular configurations. The screw M10 connections and copper contacts support reliable, low-resistance terminations, reducing maintenance complexity.
Electronic fuse monitoring provides real-time health visibility, enabling early fault detection and safer, faster maintenance actions. This reduces unplanned downtime, improves Mean Time Between Failures (MTBF), and supports predictive maintenance strategies, delivering measurable ROI in high-demand production environments.