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- Fuseless switch disconnectors
- Fuse switch disconnectors
- Switch disconnectors with fuses
- 3KF up to 800 A
- Product description
- Overview of components
- Technical specifications
- Derating values of 3KF fuse switch disconnectors when using SITOR fuses according to IEC constraints
- Derating table for use of SITOR fuses IEC from 32 to 160 A
- Derating table for use of SITOR fuses IEC from 250 to 800 A
- Derating values when using SITOR fuses according to UL constraints
- Derating table for use of SITOR fuses UL from 32 to 160 A
- Derating table for use of SITOR fuses UL from 250 to 800 A
- 3NJ62 up to 630 A
- 3KF up to 800 A
- 8UD1 door-coupling rotary operating mechanisms
Application
The plug-in 3NJ62 switch disconnectors with fuses are installed in low-voltage distribution boards where a minimum amount of space is available for a maximum number of cable ducts to the power distribution. They can be easily fitted in all common control cabinets (minimum depth: 400 mm).
The plug-in 3NJ62 switch disconnectors with fuses are available for rated uninterrupted currents from 160 A to 630 A.
LV HRC fuse links according to IEC 60269-1/EN 60269-1 (sizes NH 00 to NH 3) or BS fuse links according to BS 88 provide overload and short-circuit protection up to 690 V AC.
The switch disconnectors can be retrofitted at any time with auxiliary switches, an ammeter (48 mm x 48 mm) and current transformers, with no extra space required. For installation in control cabinets with a depth > 400 mm, the mounting depth of the disconnectors can be increased by 200 mm using a contact extension. Further installation accessories, such as guide rails and blanking covers, complete the product range.