Electrical switch accessory Rittal SV 9677.480 — steel housing, for NH busbar/terminal connection

Rittal SV 9677.480 is an electrical switch accessory supplied in packs of three, designed for secure connection and clamping of NH busbar or terminal systems. The part features a steel housing and steel construction to provide mechanical strength and consistent electrical contact in switchgear and distribution panels. It is intended for use with NH-rail sizes 1–3 and helps organize and stabilize busbar connections within industrial and commercial electrical installations.

Advantages

The steel housing and all-steel construction deliver robust mechanical protection and reliable durability under typical cabinet and switchgear conditions. Its design simplifies mounting and alignment on NH busbar rails, enabling steady electrical contact and reduced risk of loosening. Supplied as a set of three, it facilitates multi-point installations and spare-part planning for installers and maintenance teams.

Suitable for

• Electrical switchgear and distribution cabinets requiring NH busbar or terminal connections
• Industrial and commercial electrical installations using NH-rail sizes 1–3
• Maintenance, retrofit, or new-build electrical panel assembly and organization

When it may not be suitable

This accessory is specifically intended for NH busbar/terminal connection applications and NH-rail sizes 1–3. It is not suitable for use as a standalone switch or for unrelated low-voltage terminal blocks that require different form factors or insulating materials. For applications requiring non-metallic housings, insulated connectors, or compatibility with NH-rail sizes outside the stated range, alternate components should be selected.

Key specifications

• Housing material: steel
• Construction: all-steel design for mechanical strength
• Application: connection/clamp for NH busbar or terminal systems
• Compatible NH-rail sizes: 1–3
• Packaging: supplied in packs of three

How to use

Mount the accessory onto the NH-rail within the switchgear or distribution cabinet following the rail manufacturer’s alignment guidelines. Position the clamp over the busbar or terminal point, ensure correct seating and mechanical alignment, then secure fasteners to achieve the required torque for stable electrical contact. Verify clearances and insulation distances after installation and perform continuity and tightening checks as part of routine commissioning and maintenance.

What to consider before purchase

• Confirm compatibility with the NH-rail size used in your installation (sizes 1–3)
• Ensure steel housing and metallic construction meet your environment and corrosion protection requirements
• Plan quantities according to the number of required busbar connection points; items are supplied in packs of three

Usage recommendations

Use appropriate torque settings and follow applicable electrical installation standards when tightening connections. In corrosive or outdoor environments, consider additional protective measures such as coatings or stainless-steel alternatives if required by the site conditions.