Why Choose the Rittal SV9677.100 NH Slimline Fuse-Switch Disconnector?
The Rittal SV9677.100 is a high-performance NH slimline fuse-switch disconnector designed for safe switching, isolation and fused protection in industrial low-voltage power distribution systems. Rated for a maximum operating current of 250 A at 690 V AC, this 3-pole unit provides a compact solution for three-phase switchgear and busbar installations.
Designed for NH size 1 fuse inserts, the SV9677.100 mounts onto busbar systems with a 185 mm centre-to-centre spacing. The unit provides top or bottom cable routing and uses robust M12 bolt connections, allowing flexible integration into professional switchgear and power distribution assemblies.
The switch disconnector is manufactured from polyamide with fire protection corresponding to UL 94-V0, while its contact tracks use partially silver-plated hard copper for dependable electrical performance. It is also suitable for current transformer installation, making it well suited to distribution systems requiring current measurement and monitoring.
Key Advantages
- High-performance 250 A NH fuse-switch disconnector for industrial distribution systems.
- 690 V AC rated operating voltage for three-phase applications.
- Designed for standard NH size 1 fuse inserts.
- 3-pole switchable configuration for three-phase circuits.
- Compatible with busbar systems featuring 185 mm centre-to-centre spacing.
- Flexible top or bottom cable outlet simplifies panel layout.
- Suitable for current transformer installation.
- Flame-retardant polyamide construction corresponding to UL 94-V0.
Key Features
- Rittal SV NH slimline fuse-switch disconnector.
- 250 A maximum rated operating current.
- 690 V AC three-phase rated operating voltage.
- Designed for NH size 1 fuse inserts.
- 3-pole, switchable design.
- 185 mm busbar centre spacing.
- M12 bolt electrical connection.
- Top or bottom cable outlet.
- Round conductor connection range of 6–240 mm².
- Partially silver-plated hard copper contact tracks.
- Suitable for busbars with a height of 10 mm.
- Suitable for current transformer installation.
Reliable Fused Switching for Industrial Power Distribution
NH fuse-switch disconnectors combine circuit switching, electrical isolation and fuse protection within a single compact assembly. This enables outgoing circuits to be safely disconnected while NH fuse inserts provide protection against excessive currents, making these devices particularly suitable for industrial switchboards and high-capacity power distribution systems.
The Rittal SV9677.100 is engineered for efficient integration into 185 mm busbar systems. Its 250 A rating, M12 connections and flexible top or bottom cable routing support demanding panel-building applications, while compatibility with current transformer installations allows current measurement to be incorporated into the distribution system.
Typical Applications
- Industrial low-voltage power distribution systems.
- Rittal busbar and switchgear assemblies.
- Electrical distribution cabinets and switchboards.
- Fused outgoing feeder circuits.
- Industrial machinery power distribution.
- Manufacturing and production facilities.
- Systems requiring current transformer installation.
- Commercial and industrial three-phase electrical installations.
