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circuit-breakers with residual current trip DFL 8 250-4/X-B NK

09219783, Circuit-breakers with integral residual current protection, 4-pole, 250 A, Type B, adjustable
  • AC-DC sensitive up to 150 kHz
  • Rated voltage/current: 230 V, 400 V (AC) / 250 A
  • response residual current and non-response lag time adjustable

circuit-breakers with residual current trip DFL 8 250-4/X-B NK

09219783, Circuit-breakers with integral residual current protection, 4-pole, 250 A, Type B, adjustable
  • AC-DC sensitive up to 150 kHz
  • Rated voltage/current: 230 V, 400 V (AC) / 250 A
  • response residual current and non-response lag time adjustable

Details

Circuit-breakers with integral residual current protection, 4-pole, 250 A, Type B, adjustable

Circuit-breakers with residual current trip (CBR) switch high currents, protect equipment, cables and lines against overcurrent and protect people against electric shock. DFL 8 are compact devices with integrated auxiliary switch and terminals for large conductor cross-sections. Type B switches are AC-DC sensitive at frequencies of 0 Hz (smooth residual currents) to 150 kHz. They have increased resistance to surge currents and lightning. Switches with the characteristic curve NK provide classic fire protection of 300 mA at frequencies up to 150 kHz. They are optimised for facilities at risk of fire. For switches of this variant, the residual response current can be individually set in levels for the application in question (0,3 A, 0,5 A, 1 A). The non-response lag time can also be adjusted in levels accordingly. Selective residual current circuit-breakers are therefore possible in systems with stacked distribution boards. Devices in the standard design are intended for monitoring circuits with a rated voltage of 230 V, 400 V and a rated frequency of 50 Hz.

adjustable rated residual current , rated currents from 100 A to 250 A, rated voltage 230 V, 400 V AC, four-pole, detection of smooth DC residual currents and AC and pulsating DC residual currents, high tolerance against fluctuations in the auxiliary voltage for the detection of type B residual currents, trips independent of mains and auxiliary voltage in the event of type A residual currents and overcurrent, high short-circuit switching capacity, terminals up to 185 mm² , high surge current strength, i.e. low tendency to faulty trips due to transient residual currents , thresholds adjustable for instantaneous and slow-blow overcurrent trip , integrated auxiliary switches

mounting on mounting plate, any installation position , supply from below

stacked power supply systems with TN-S, TT, and TN-C-S networks with high short-circuit performance in purpose-built buildings and industrial facilities , In IT networks, the residual current trip of the CBR can be set to switch off in the event of a second earth fault. , Thanks to its AC/DC sensitive residual current trip, this AC/DC sensitive CBR is especially suitable for protecting systems with electronic equipment that is not galvanically isolated from the mains at its inputs. , use for residual current protection in TN-C networks is excluded

Fire protection with setting IΔn = 0.3 A to 150 kHz

Circuit-breakers with integral residual current protection, 4-pole, 250 A, Type B, adjustable

Circuit-breakers with residual current trip (CBR) switch high currents, protect equipment, cables and lines against overcurrent and protect people against electric shock. DFL 8 are compact devices with integrated auxiliary switch and terminals for large conductor cross-sections. Type B switches are AC-DC sensitive at frequencies of 0 Hz (smooth residual currents) to 150 kHz. They have increased resistance to surge currents and lightning. Switches with the characteristic curve NK provide classic fire protection of 300 mA at frequencies up to 150 kHz. They are optimised for facilities at risk of fire. For switches of this variant, the residual response current can be individually set in levels for the application in question (0,3 A, 0,5 A, 1 A). The non-response lag time can also be adjusted in levels accordingly. Selective residual current circuit-breakers are therefore possible in systems with stacked distribution boards. Devices in the standard design are intended for monitoring circuits with a rated voltage of 230 V, 400 V and a rated frequency of 50 Hz.

adjustable rated residual current , rated currents from 100 A to 250 A, rated voltage 230 V, 400 V AC, four-pole, detection of smooth DC residual currents and AC and pulsating DC residual currents, high tolerance against fluctuations in the auxiliary voltage for the detection of type B residual currents, trips independent of mains and auxiliary voltage in the event of type A residual currents and overcurrent, high short-circuit switching capacity, terminals up to 185 mm² , high surge current strength, i.e. low tendency to faulty trips due to transient residual currents , thresholds adjustable for instantaneous and slow-blow overcurrent trip , integrated auxiliary switches

mounting on mounting plate, any installation position , supply from below

stacked power supply systems with TN-S, TT, and TN-C-S networks with high short-circuit performance in purpose-built buildings and industrial facilities , In IT networks, the residual current trip of the CBR can be set to switch off in the event of a second earth fault. , Thanks to its AC/DC sensitive residual current trip, this AC/DC sensitive CBR is especially suitable for protecting systems with electronic equipment that is not galvanically isolated from the mains at its inputs. , use for residual current protection in TN-C networks is excluded

Fire protection with setting IΔn = 0.3 A to 150 kHz