Possible uses

3NP1 fuse switch disconnectors can be used for protecting and switching the most diverse electrical loads:

• Motor starter combinations
• In conjunction with SITOR fuses for the protection of frequency converters and soft starters
• Fusing of compensation modules
• Cable feeders
• Group fusing of small loads

The devices are optimized for operation in all kinds of system environments:

• Low-voltage switchgear assemblies for power distribution and MCCs (e. g. main and sub-distribution boards)
• Distribution systems with cover levels of 32 and 70 mm or 45 and 70 mm
• Mechanical engineering
• Railway applications

Fuse monitoring

Fuse monitors are used to detect, indicate and report faults:

• MFM – electromechanical fuse monitoring for AC/DC networks
• EFM 10 – electronic fuse monitoring for AC networks
• EFM 20 – electronic fuse monitoring with line monitoring for AC networks
• EFM 25 – electronic fuse monitoring with line monitoring for DC networks

Standards and specifications

The 3NP1 fuse switch disconnectors are compliant with:

• IEC 60947-1, EN 60947-1
• IEC 60947-3, EN 60947-3

Mounting

Floor mounting

3NP1 fuse switch disconnector for floor mounting

Busbar mounting

3NP1 fuse switch disconnector for busbar mounting