N7BY1 Residual Current Breaker Overload

Technical Data & Standard

Description

The unitprovides single phase protection which combines an overcurrent device(MCBltogether witha current operated circuit breaker (RCCB) as an integral unit. The unit has plug-in feature at "Live" (lineside).Load outgoing terminals are of the stirup type which gives added grip on conductors.

overcurrent protection

Operates on thermal and magnetic tripping principles in the line side.Overload and short circuitprotection meets requirements in IEC/EN61009-1.

Earth leakage protection

Operates on detection of differential current between line and neutral currents. Electronic sensinginitiates amplification in circuitry to provide high sensitivity. Crucial tripping time is well below setstandard which helps safeguard human lifes.

operation of test button

The test button (marked T) should be depressed momentarily in the activated circuit to check theintegrity of the tripping mechanism and functions of the unit.The RCBO unit should be checkedevery quaterly using the test button. lf it fails to trip, seek help from the electricians.

Note:Operation of the test device checks only the correct functioning of the RCBO at a higher current thanthe rated tripping level. It does not check the integrity of the earthing system.

lnstallation

Plug in the RCBO unit with L lin) terminal onto the "Live" busbar of the consumer unit plug in board;Connect hte BLACK neutral [N (in)] to the neutral supply terminal block;

The load connections are made to the outgoning terminals of the RCBo marked L (out) and Nout).N (out) must not be connected to the neutral supply terminal boock.The load cables must be of thecorrect size corresponding to the RCBo current ratings;

Upon activation of power after installation, depress"T" button to test unit.

Caution:High voltage insulation testers must not be used with the RCBo in circuit.

Characteristic Curve