Advertisement
HANNOVER MESSE 2018, 23 - 27 April
Homepage>Exhibitors & Products >Residual Current Circuit Breakers Type B

Residual Current Circuit Breakers Type B

RCCB Type B

Logo Residual Current Circuit Breakers Type B

Exhibition stand

Hall 12, Stand D12

Product description

ISKRA NFIB are type B residual current circuit breakers (RCCB) for which tripping is ensured as for type A and in addition for smooth d.c. residual currents, residual d.c. currents which may result from rectifying circuits and high frequency a.c. residual currents.
Intended for use in applications with frequency inverters, medical devices, UPS, mobile installations, elevators
The type B residual current circuit breakers are not intended for use in d.c. systems and networks with operating frequencies other than 50 or 60 Hz.
For type B tripping conditions for frequencies up to 1 kHz are defined.
Functions of detection, evaluation and interruption for type A residual currents do not depend on the line voltage. For evaluation of smooth d.c. residual currents supply voltage greater than 50 V is required which can be applied to any two poles only.
Versions: NFIBK: short-time delay tripping
NFIBS: selective type
Surge current withstand capability with current waveform 8/20 µs is 3 kA.
When designing and installing electrical installations, electrical loads that can generate d.c. residual currents in the event of fault, must be assigned a separate electrical circuit.
Optional operating position
Degree of protection IP20; after installation in a distribution box IP40
Assembly to a 35 mm wide mounting rail in accordance with EN 60715...

Product website

All products offered by this exhibitor

MC 784 Advanced Power Quality Analyser

The MC784 Advanced Power Quality Analyser can be used as a standalone PQ monitoring device for detection and analysis of local PQ deviations, transients, alarms and periodic measurements. For this purpose it is normally positioned at the point-of-common-coupling (PCC) of industrial and commercial energy ...read more

Power Quality Analyser MC 774

Power Quality Analyser MC 774read more

Motor Protection Switches

Start-up and protection of electric motors (industry, small machines, external use, agricultural machines, compressors, repair shops, ...read more

Filters for radio-interference suppression

They are used in home appliances.read more

Capacitors for use in electronics

Capacitors for use in electronics are used mainly in electronic circuits. An application of a single capacitor type depends on the capacitor dielectric. Capacitors construction can include metallized dielectric (self-regenerative) or Al-film. Polyester, policarbonate and polypropylene films can be used ...read more

Motor running and motor starting capacitors

Motor running & motor starting capacitors are designed for obtaining an auxiliary phase in single-phase and three-phase motors connected to a single phase.read more

Automatic devices for compensation of reactive energy

They are used for automatic compensation of reactive energy in circuits of higher power with absence of higher harmonics.read more

Automatic Power Factor Regulators

The reactive power controller obeys the network power factor and the desired power factor value adjusted regulator by switching on and off capacitor stages of correction devices. In that way it performs its desirable function of reactive power correction.read more

Induction heating capacitors

They can be used in oscillatory circuits of devices for inductive heating, which are very frequently used in forging, tempering and melting of metals.read more

Low voltage power factor correction capacitors

They are used for compensation of reactive energy at inductive users (transformers, electromotors) under industrial voltage.read more

High voltage capacitors

High voltage capacitorsread more

Residual Current Circuit Breakers FI, NFI, RFI2

With a residual current circuit breaker (RCCB) the following protective measures are available: fault protection, protection against fire and additional protection in case of direct contact. Residual current circuit breakers with overcurrent protection - RFI2 RFI2 is a combination of a residual current ...read more

Measuring Transducers

Measuring transducers are instruments used for conversion of electrical quantities in single and three phase electrical systems. Input-output characteristics can be created with five breaking points for unipolar and bipolar output signals. They can be used in places where you need analogue output quantities ...read more

Measuring centres & Network Analyzers

Measuring centres are instruments for measuring and monitoring quantities in single and three phase electrical systems. Their operation is based on fast sampling of input voltages and currents in all measuring phases. They replaces many analogue instruments and measure quantities like: voltage, current, ...read more

Contactors KNL

KNL6-KNL30 - Contactors are used for switching electric motors and other resistive inductive and capacitive loads - A wide variety of snap-on auxiliary switch blocks and accessories - Uniform marking of connection terminals in accordance with EN 50005 and EN 50011 - Quick assembly to a 35 mm wide ...read more

Miniature Circuit Breakers RI60, RI120, RI50

RI 60 - RI 60 is used for over-current (overload and short-circuit) protection of installations and devices, and as a disconnector in case of electric shock - RI 60 miniature circuit breakers are provided with two springs for assembly to a 35 mm wide mounting rail (EN 60715). The springs enable simple ...read more

Stored items

0

Server communication error: Item could not be saved.