Description
The Hager HBB251H is a differential block designed to be coupled with the h3 x250 series circuit breakers, this 4-pole device, with a nominal current of 250 A, is of the A-HI type, which gives it reinforced immunity and makes it effective even in the presence of faults with a unidirectional pulsating component.
Its versatility is guaranteed by the possibility of adjusting both the intervention sensitivity (IΔn) and the delay.
Mountable below the switch via a safety coupling, it includes test buttons and LED or remote signalling, essential for the safety and diagnostics of electrical systems.
Datasheet
• Rated current 250 A
• Sensitivity IΔn Adjustable to 30 mA, 100 mA, 300 mA, 1000 mA, 3000 mA, 6000 mA
• Number of poles 4
• Residual current type A HI
• Insulation voltage Ui 500 V
• Rated impulse withstand voltage Uimp 6 kV
• Rigid terminal section 35 - 185 mm²
• Flexible terminal section 35 - 150 mm²
• Bottom mounting via safety coupling
Properties
