Rittal SV NH Fuse-Switch Disconnector 690V AC 630A 3-Pole RiLine60 9343.130

The Rittal SV NH fuse-switch disconnector is a robust 3-pole switching device engineered for safe load breaking and fuse protection in low-voltage power distribution systems up to 690 V AC. Its 630 A rated current and compatibility with NH00 to NH3 fuse links make it a versatile solution for demanding industrial applications. Designed for direct mounting on the 60 mm RiLine60 busbar system, it ensures quick installation and excellent electrical contact.

Advantages

The SV series offers a high short-circuit making capacity of 50 kA peak, ensuring reliable operation even under fault conditions. The glass-fibre reinforced polyamide housing provides high mechanical strength and excellent insulation properties. With an IP20 protection rating on terminals, it is safe for use in enclosed switchgear. The device supports main conductor cross-sections from 2.5 to 300 mm², allowing flexible wiring options. Its low power loss of 15 W at rated current contributes to energy efficiency. The light grey RAL 7035 colour blends seamlessly into standard electrical enclosures.

Suitable for

• Industrial power distribution panels and motor control centres
• RiLine60 busbar systems in control cabinets
• Protection of transformers, cables, and motors up to 630 A
• Applications requiring NH fuse links from size 00 to 3
• Low-voltage switchgear assemblies per IEC 61439

Key specifications

• Rated operational voltage: 690 V AC
• Rated current: max. 630 A
• Number of poles: 3
• Compatible fuse sizes: NH00, NH1, NH2, NH3
• Rated impulse withstand voltage: 8 kV
• Rated short-circuit withstand current: 20 kA (1s)
• Rated short-circuit making capacity: 50 kA peak
• Mounting: 60 mm busbar system (RiLine60)
• Connection cross-section: 2.5–300 mm²
• Protection category: IP20 (terminals)
• Standards: IEC 60947-3, VDE 0660 Part 107
• Material: glass-fibre reinforced polyamide (PA 6.6)
• Operating temperature: -25 °C to +55 °C
• Colour: RAL 7035 (light grey)

Recommendations

For optimal performance, install the SV fuse-switch disconnector in a well-ventilated enclosure and ensure proper torque on terminal screws. Use only NH fuse links that match the selected size and rated current. Regular inspection of contacts and fuse condition is advised to maintain safety and reliability.