Rittal 9343120 NH fuse-switch disconnector - 3-pole
Part Number: 9343120
Manufacturer
Rittal
Part number
9343120
Category
Alt Part Number
SV 9343.120
Quick Summary
Rittal 9343120 NH fuse-switch disconnector is a reliable isolation device for control cabinets and switchgear. Engineers frequently struggle with ensuring safe fuse monitoring and clean wiring inside small spaces, which this solution directly addresses. It meets CE compliance and uses UL 94 fire-rated polyamide housing, while IEC/DIN EN 60 947-3 testing confirms electrical safety. With a 3‑pole design, 250 A rating, and a wide 400–690 V operating range, it offers scalable reliability for growing automation projects. Top and bottom cable outlets plus copper-bar compatibility reduce wiring time and simplify installation across panel builds. These features translate into improved uptime and simplified procurement for panel builders.
Product Information
Extended Description
9343120 Rittal: SV NH fuse-switch disconnector, size 1, 250 A, 400-690 V, 3-pole, box terminal, with electronic fuse monitoring
Article number
SV 9343.120
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: 20 mm | Clamping area height: 3 mm
Note
Connection of sector-shaped conductors 50 – 150 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.
250 A
For NH size
1
Test specification
IEC/DIN EN 60 947-3
Dimensions
Width: 184 mm | Height: 298 mm
Connection for round conductor
35 ‐ 150 mm²
To fit busbars
Height: 5, 10 mm
Clamping area for laminated copper bars
14 mm
Rated operating voltage
400 V - 690 V, 3~
Number of poles
3-pole
Packs of
1 pc(s).
Weight/pack
2.58 kg
Copper weight (kg per piece)
0.44
Customs tariff number
85369095
EAN
4028177540347
ETIM 9
EC001040
ECLASS 8.0
27371401
Product description
SV NH fuse-switch disconnector, size 1, 250 A, 400-690 V, 3-pole, box terminal, with electronic fuse monitoring
Feature: Rated operating current max. 250 A and rated voltage 400-690 V. Business Impact: Enables safe isolation for mid-size switchgear and control panels, reducing overcurrent risk and enabling standardized enclosure designs. Application: Ideal for 3-pole machines, conveyors, and packaging lines where consistent protection is critical. Feature: 3-pole box-terminal connection. Business Impact: Simplifies wiring, minimizes internal clearance issues, and speeds up assembly. Application: Fits compact control cabinets with tight layouts and needs reliable fault clearance paths. Feature: Electronic fuse monitoring. Business Impact: Provides proactive fault indication, reduces unplanned downtime, and improves maintenance planning. Application: Essential in high-availability automation lines and critical packaging equipment. Feature: Top/bottom cable outlets and busbar compatibility. Business Impact: Flexible routing lowers installation time and enables clean inner-panel wiring, improving serviceability. Application: Beneficial where multiple cable entries are required and busbars with 60 mm centre spacing are used. Feature: Clamping area for laminated copper bars and round conductors 35–150 mm². Business Impact: Broad conductor compatibility reduces part variety and rework. Application: Suitable for panel builders integrating laminated copper bars or heavy-duty conductors in power distribution. Feature: UL 94 rated housing and IEC/DIN EN 60 947-3 compliance. Business Impact: Enhances safety and regulatory alignment, easing procurement and project approvals. Application: Required in regulated environments and industries with strict material standards.
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FAQs
For installation, ensure the device is mounted in a 3-pole configuration within an enclosure that accommodates a 184 mm width and 298 mm height. Use the top or bottom cable outlets with box-terminal connections and align with the 60 mm center-to-center busbar spacing. The clamping areas accommodate laminated copper bars up to 14–20 mm wide and round conductors 35–150 mm², enabling secure, compliant wiring with minimal bending.
Key specs include a rated operating current of 250 A and a rated voltage range of 400–690 V, 3-pole configuration, and a box-terminal connection. It supports top/bottom cable outlets, is compatible with laminated copper bars, and is designed for NH size 1. These specifications enable reliable isolation and protection for medium-power panels and switchgear.
The device is well-suited for automation panels, machine control rooms, packaging lines, and general switchgear assemblies in manufacturing environments. Its high current rating, robust housing, and fuse-monitoring capability make it ideal for applications requiring reliable maintenance planning, rapid wiring, and compliance with European safety standards in mid-sized control cabinets.
The SV 9343.120 fuse-switch disconnector uses UL 94 fire-rated polyamide material and meets IEC/DIN EN 60 947-3 electrical safety requirements. It is CE compliant and designed to support safe, compliant operation in regulated industrial environments, with materials and construction validated for reliable performance.
Look for proactive fuse monitoring to reduce downtime and simplify preventive maintenance scheduling. The device’s compact footprint, 3-pole configuration, and top/bottom entry enable faster wiring and easier future upgrades. The ability to connect laminated copper bars and round conductors within specified ranges reduces spare parts inventory and accelerates project timelines, delivering a favorable total cost of ownership.