Decoupling device
KNFBT series decoupling device is installed in a series of rated voltage 500V and below the low voltage
power supply system, used to increase the lead inductance, make up for the lack of wire length, the
coordination problem between the different specifications of surge protective device. Typical application
in surge protector of B level and C level are installed in a distribution box of the occasion. When the voltage
of the switch type lightning protection device and the voltage between the limited pressure type protector
line length is less than 10M, the limit between pressure type lightning arrester line length is less than 5M,
should install the decoupler between two level lightning protection device.
The decoupling device is connected in series in the circuit, the line should be according to the load current
to choose the corresponding decoupling device, (according to IEC61643-1 and GB50343 standards
for selecting)
KNFBT-63A
Work Environment
·Working temperature: -40℃~ +80℃
·Relative humidity:5% ~ 95%
·Atmospheric pressure:74.8kPa ~ 106kPa
Technical Parameters
Type | KNFBT-35A | KNFBT-40A | KNFBT-63A | |
Product scope | 220V/380V power distribution system | |||
Nominal voltage | UN | 500V | ||
Nominal current | IN | 35A | 40A | 63A |
Rated inductance | Ln | 7.5μH | ||
DC resistance | RDC | ＜4.5mΩ | ||
Temperature rise | Δt | 35K | 45K | 55K |
Installation standards | 35 mm standard guide | |||
Interface type | Screw fixed terminals | |||
Case material | the flame-retardant and reinforced nylon(ul94-v0) | |||
Protection level | IP20 | |||
Install the wire section | ≥6mm² Shares more soft conductor | |||
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