Earth Leakage Circuit Breaker(ELCB), Residual Current Device(RCD), Residual Current Circuit Breaker(RCCB)
Brand Name: Meba
Model Number: NFIN
Type: Residual Current Circuit Breaker or Residual Current Device
Poles Number: 2P


1. NFIN Residual Current Circuit Breaker provide the function of isolation switching and earth leakage protection of electrical circuits.

2. And also provide the indirect protection of the operator’s body against the dangerous effects of electric current and provide the protection of the fire caused by the electrical circuit fault.

Construction features

– Measuring component and buckling component of products is located between enter line end and entrance line end;
– Movement characteristic of products can not be changed with outside mechanical tool;
– The operating organization has the free function to take off and buckle;
– Operate part can not be taken down from the shell outer of products, the shell can not influence the operating organization to work, the accessory group which replace the feelers pressure, should guarantee the feelers pressure does not change while running.


Good quality , high breaking capability, updated structure,quick trip and guide installation, competitive price,excellent and safe performance,beautiful and compact appearance, etc .

Mounting Requirements:

1. Circumstance temperature -5°C ~ +40°C, average temperature not exceeding 35°C.
2. Altitude above sea level less than 2000 m.
3. Humidity not exceeding 50% at 40°C and not exceeding 90% at 25°C.
4. Installation class II or III.
5. Pollution class 2.
6. Installation method DIN Rail mounting type.
7. The external magnetism shall not be more than 5 times of terrestrial one.
8. Product shall be installed vertically at the place where there shall be no severe impact and vibration. The product is switched on when the handle is at upper position.

Type Electro-magnetic, Electronic
Number of poles 2P 4P
Rated making and breaking capacity 630A
Rated Current(In) 6, 12, 25, 32, 40, 63
Rated Voltage(Un) AC 2P: 230/240V 4P: 400/415V
Rated residual operating current( In) 30 100 300 500mA
Rated residual non-operation Current( Ino) 0.5In
Residual operating current scope 0.5In~In
Residual current breaking time ≤ 0.3s
Residual current trip characteristics A, AC
Ultimate short-circuit breaking capacity (Inc) 4KA 4.5KA 6KA
Endurance ≥ 4000
Connection Capacity ≤ 25mm 2
Connection terminal torque (Max. ) 2.0Nm
Degree of protection IP20
Standard IEC/EN610018


[Download not found]Meba 2P 40A 30mA NFIN RCCB open a circuit automatically in the event of an earth fault between phase and earth and/or netural and earth.


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