MCCB circuit breaker RCD residual current circuit breaker JCRD4-125 4 Pole Type AC or Type A RCCB
Introduction
JCRD4-125 4 pole RCDs may be used to provide earth fault protection on 3 phase, 3 wire systems, as the current balance mechanism does not require a neutral to be connected in order to operate effectively.
JCRD4-125 RCDs must never be used as the sole method of direct contact protection, but are invaluable in providing supplementary protection in high risk environments where damage may occur.
However W9 GROUP JCRD4-125 4 pole RCDs do, ideally, require a neutral conductor to be provided on the supply side of the RCD in order to ensure that the test circuit operates satisfactorily. Where connection of a neutral supply is not possible, then an alternative method of ensuring that the test button is operational is to fit a suitably rated resistor between the load side neutral pole and a phase pole not associated with the normal test button operation.
JCRD4-125 4 pole RCD is available in ac type and A type. AC type RCDs are only sensitive to sinusoidal type fault currents. A type RCDs, on the other hand, are sensitive to both sinusoidal currents and “unidirectional pulsed” currents, which may be present, for example, in systems with electronic devices for rectifying the current. These devices are capable of generating pulsed shape fault currents with continuous components that an AC type RCD is unable to recognize
JCRD4-125 RCD provides protection against earth faults occurring in equipment and reduces the effects of electric shock on human beings and thus saves lives.
JCRD4-125 RCD measures the current flowing in the live and neutral cables and if there is an imbalance, that is current flowing to earth above the RCD sensitivity, the RCD will trip and cut off the supply.
JCRD4-125 RCDs incorporate a filtering device to provide protection against transient surges in the supply to the unit, thus reducing the occurrence of unwanted tripping
Product Description
Main Features
●Electromagnetic type, reliable operation
●Leakage protection to prevent the risk of electric shock
●Multiple options to suit various specifications
●Minimize the risk of uninterruptible power supply tripping unexpectedly
●Clear indication of contact status for easy monitoring
●High level of accidental electric shock protection
●Breaking capacity up to 6kA to handle high fault currents
●Current rating options up to 100A including 25A, 32A, 40A, 63A, 80A and 100A
●30mA, 100mA and 300mA trip sensitivities provide customized protection
●Available in Type A or AC to achieve different fault current detection functions
●Central trolley position provides clear indication of ground faults
●35mm DIN rail mounting for easy installation
●Flexible wiring from top or bottom for easy installation
●Complies with IEC 61008-1 and EN61008-1 quality assurance
●Suitable for a wide range of applications including residential, commercial and light industrial uses
| RCD | Types of Load |
| Type AC | Resistive, capacitive, inductive loadsImmersion heater, oven / hob with resistive heating elements, electric shower, tungsten / halogen lighting |
| Type A | Single phase with electronic componentsSingle phase inverters, class 1 IT & multimedia equipment, power supplies for class 2 equipment, appliances such as washing machines, lighting controls, induction hobs & EV charging |
| Type F | Frequency controlled equipmentAppliances containing synchronous motors, some class 1 power tools, some air conditioning controllers using variable frequency speed drives |
| Type B | Three phase electronic equipmentInverters for speed control, ups, EV charging where DC fault current is >6mA, PV |
| Standard | IEC61008-1 , EN61008-1 | |
| Electrical features |
Rated current In (A) | 25, 40, 50, 63, 80, 100, 125 |
| Type | Electromagnetic | |
| Type (wave form of the earth leakage sensed) | AC, A, AC-G, A-G, AC-S and A-S are available | |
| Poles | 4 Pole | |
| Rated voltage Ue(V) | 400/415 | |
| Rated sensitivity I△n | 30mA,100mA,300mA are available | |
| Insulation voltage Ui (V) | 500 | |
| Rated frequency | 50/60Hz | |
| Rated breaking capacity | 6kA | |
| Rated impulse withstand voltage(1.2/50) Uimp (V) | 6000 | |
| Dielectric test voltage at ind. Freq. for 1 min | 2.5kV | |
| Pollution degree | 2 | |
| Mechanical features |
Electrical life | 2, 000 |
| Mechanical life | 2, 000 | |
| Contact position indicator | Yes | |
| Protection degree | IP20 | |
| Reference temperature for setting of thermal element(℃) | 30 | |
| Ambient temperature (with daily average ≤35℃) | -5…+40 | |
| Storage temperation (℃) | -25…+70 | |
| Installation | Terminal connection type | Cable/U-type busbar/Pin-type busbar |
| Terminal size top/bottom for cable | 25mm2 , 18-3/18-2 AWG | |
| Terminal size top/bottom for Busbar | 10/16mm2 ,18-8 /18-5AWG | |
| Tightening torque | 2.5 N*m / 22 In-Ibs. | |
| Mounting | On DIN rail EN 60715 (35mm) by means of fast clip device | |
| Connection | From top or bottom |