Why Choose the Rittal SV 9344.020 NH Fuse-Switch Disconnector?
The Rittal SV 9344.020 is an NH size 00 fuse-switch disconnector designed for mounting plate assembly in industrial power distribution and switchgear applications. Rated for a maximum operating current of 160 A and an operating voltage range of 400–690 V AC, three-phase, it combines NH fuse protection, switching and isolation in a compact three-pole device.
Featuring a three-pole configuration and robust box terminal electrical connections, the SV 9344.020 accepts round conductors from 4–95 mm². Its cable outlet may be arranged at the top or bottom, providing flexibility when routing incoming and outgoing conductors within electrical enclosures and distribution assemblies.
The SV 9344.020 incorporates electronic fuse monitoring and is specifically designed for mounting plate assembly. Its polyamide construction, silver-plated electrolytic copper contact tracks and compact 106 × 194 mm dimensions make it a practical solution for professionally engineered industrial power distribution systems requiring monitored NH fuse protection.
Key Advantages
- Combines NH fuse protection, switching and isolation in one compact device.
- 160 A maximum rated operating current for industrial distribution circuits.
- 400–690 V AC three-phase rated operating voltage.
- Designed for standard NH size 00 fuse inserts.
- Integrated electronic fuse monitoring for monitored power distribution applications.
- Robust box terminal electrical connections.
- Top or bottom cable outlet provides flexible conductor routing.
- Accepts round conductors from 4–95 mm².
- Designed specifically for mounting plate assembly.
Key Features
- Rittal NH fuse-switch disconnector.
- Design: For mounting plate assembly.
- NH fuse size: 00.
- Rated operating current: Up to 160 A.
- Rated operating voltage: 400–690 V AC, 3-phase.
- 3-pole configuration.
- Electronic fuse monitoring: Yes.
- Electrical connection: Box terminal.
- Cable outlet: Top / bottom.
- 4–95 mm² round conductor connection range.
- 13 × 13 mm clamping area for laminated copper bars.
- Silver-plated electrolytic copper contact tracks.
- Polyamide construction with fire protection corresponding to UL 94.
- Tested in accordance with IEC/DIN EN 60947-3 and DIN EN 60269-2 for fuse inserts.
Compact NH Fuse Protection for Mounting Plate Assemblies
NH fuse-switch disconnectors combine fuse protection with switching and isolation functions, allowing electrical feeders and distribution circuits to be protected and disconnected within a single device. The Rittal SV 9344.020 is designed for NH size 00 fuse inserts and mounting directly onto a mounting plate, making it suitable for conventional enclosure and switchgear layouts where direct busbar mounting is not required.
With a maximum rated operating current of 160 A, conductor capacity from 4–95 mm² and flexible top or bottom cable routing, the SV 9344.020 supports a wide range of industrial distribution applications. Integrated electronic fuse monitoring adds monitoring capability to the protective switching function, while the box terminals provide practical connections for high-current conductors.
Typical Applications
- Industrial switchgear assemblies.
- Mounting plate-based power distribution systems.
- NH fuse-protected feeder circuits.
- Main and sub-distribution panels.
- Machine and plant power distribution systems.
- Motor control and protection assemblies.
- Industrial automation cabinets.
- OEM switchboards and electrical panels.
