NBSe NBSM6-63LM C63 Residual Current Circuit Breaker with Overload
Protection, 2 pole rcbo 30ma
1. General description
This unit combines the overcurrent protection of the "MEMGUARD"mcb
with an electronic r.c.d capable of high sensitivity operation with
special fail-safe features.The unit is ready for installation
in"MEMGUARD"SPN type A or type B boards operating on single phase
240V system. The unit provides single-phase protection against
overload ,short circuit and earth leakage currents.
2. OVERCURRENT PROTECTION
Overcurrent protection to circuit conductors is provided by thermal
and magnetic tripping elements is the line side ,equivalent to the
"MEMGUARD"mcb and is available in both M3 & M6 versions.Operating
characteristice on overcurrent (the time/current curves)are as for
the "MEMGUARD"standard m.c.b..This section of the unit complies
with the requirements of BSEN60947-2 for miniature circuit
breakers,Short circuit requirements comply with BS4293.
3. EARTH FAULT PROTECTION
The r.c.d elment of the device provides core-balance detecton of
the difference between line and neutral currents and amplificaton
to provide high sensitivity.
4. OPERATION OF THE TEST BUTTON
This check is made aftor installation with all shields and covers
in place ,and requires the MCB/RCD and the main supply switched
on Pressing hte button marked "T" on the MCB/RCD applies a
simulated earth-fault to the MCB/RCD whichshould trip instantly.
This should be checkde frequently, at least quarterly. If the
MCB/RCD fails to trip seek expert advice.
NOTE:
Operation of the test device checks only the correct functoninge of
the MCB/RCD at a higher currect than the rated tripping level.This
test does not check the integrity of the earthinge system
5. INSTALLATION
1). Fit MCB/RCD unit as required into
"MEMGUARD"consumer/distribution board.
2). The BLACK flying neutral supply lead must be connected to the
Neutral supply terminal block.
3). The LOAD connections are made to the outgoing terminals of the
unit marked 'L"LOAD and "load.
NOTE:The neutr al supply terminal block.
4). High voltage insulation testers must not be used with the unit
in circuit.to carry out hv tests disconnect load side cables from
MCB/RCD unit and test circuit as normal.
5. Our Services
(1) Warranty ( 24 months warranty )
1. The warranty starts from the delivery date from our factory;
2. During the warranty, any defective product will get repaired or
replaced for free ;
3. It is beyond the warranty as the products breaked by the
violence , the carelessness or repaired , altered without
authorization.
(2) Lead Time
1. Sample orders will be delivered from our factory within 7
working days.
2. General orders will be delivered from our factory within 7-15
working days.
3. Bulk orders will be delivered from our factory within 25 working
days at most
(3) Shippment
1. By EMS, DHL, FedEx, TNT, UPS or other express.
2. By our forwarding agent (by air or by sea).
3. By your own forwarding agent.
4. By domestic forwarding agents to any city in China
