Apator 63-811748-011 RBK 1 Pro Fuse Switch Disconnector 250A NH1

The Apator RBK 1 Pro (article 63-811748-011) is a three-pole horizontal HRC fuse switch-disconnector for NH1 (size 1) fuse links, rated 250 A at up to 690 V AC. It is operated manually by a front rotary lever and mounts on a mounting plate.

• Operation: manual front rotary lever (not motorised)
• Fuse size: NH1 (size 1)
• Rated thermal current Ith: 250 A
• Rated voltage Un: up to 690 V AC
• Utilization category: AC-23B
• Terminals: round conductors via S-bridge clamps (2 × M8 × 30), Cu/Al 35–120 mm²
• Mounting: on mounting plate
• Rated short-circuit withstand/making current: 80 kA at 690 V, 100 kA at 400 V
• Rated insulation voltage Ui: 1000 V
• Rated impulse withstand voltage Uimp: 8 kV
• Mechanical durability: 1600 cycles; electrical durability: 200 cycles
• Degree of protection: IP20
• Housing: glass-fibre reinforced polyamide (flammability class V0); silver-plated contacts; steel arc-chamber deionization plates
• Standards: EN 60947-1, EN 60947-3, IEC 60947-1, IEC 60947-3