RCCB

ALFR Residual Current Circuit Breaker(RCCB)

The ALFR RCCB includes A, AC, and S Type. It provides key technical data including rated currents from 16A to 100A, endurance tests, and precise breaking times for different leakage types. The product features a modern design, user-friendly connections, and high resistance to current surges up to 5kA. Notably, the S Type offers selective tripping to prevent unwanted disconnections and is suitable for use as a main breaker or with surge protectors.

Product Details

Product Descriprion

The ALFR RCCB series offers Type A, AC, and S residual current circuit breakers, designed for residential, commercial, and industrial distribution systems, complying with EN/IEC 61008-1 standards. With a rated conditional short-circuit current of up to 10kA and multiple rated currents from 16A to 100A, the product features an electromagnetic release mechanism. The Type S variant incorporates a minimum non-operation time delay of 40ms to prevent unwanted tripping, making it suitable as a main switch or for use with Class II surge protectors.

Featuring a modern design, the product supports connections with conductors up to 35mm² and secure mounting via DIN rails. A dual-color contact position indicator (red for closed, green for open) enhances operational safety, while all models offer resistance to current surges up to 5kA. With user-friendly wiring compatible with busbars and pin-type terminals, and an IP20 protection rating, it ensures reliable performance in diverse environments.

Performance parameters include rigorous endurance tests (on-load/off-load operating cycles) and precise breaking time requirements (adjusted based on leakage type and current values). The Type S breaker provides selective protection, significantly reducing unnecessary power interruptions while meeting automatic disconnection time conditions of 0.2s or 0.4s, delivering critical reliability for high-demand residual current protection scenarios.

Application

Standard	Confirming to EN/IEC61008-1
Rated conditional short-circuit current,Inc	6kA、10kA
Protection	Ground fault
Rated current,In	16,25,32,40,63,80,100A
Number of poles	2P(1P+N),4P(3P+N)
Rated sensitivity currents,Ln	10,30,100,300mA
Rated residual non-operating current	0.5XI△n
Rated impulse withstand voltage Uimp	6000V
Rated voltages 2pole 4pole	230VAC
Rated voltages 2pole 4pole	230/400VAC
Protection degree	-25°C~+40℃
Residual current off-time at I△n	≤0.1s
Rated residual current making &breaking capacity,I△m	500A for In=16,25,32,40A 630A for In=63,80,100A
Type of trip	Electro-magnetic release
Type of terminal	Lug type and Pin type
Terminal capacity	Cables up to 35mm²
Protection degree	IP20
Installation	35mm DIN rail
Residual current operating characteristic AC,A,S

Product display

Endurance

In	Operating cycles		Operating frequency (operations/h)
In	On-load operating cycles	Off-load operating cycles	Operating frequency (operations/h)
16,25,32	2000	2000	240
40,63,80,100	2000	1000	120

Breaking time of residual current

Max.breaking time
Leakage type	In(A)	IΔn(A)	IΔn	2IΔn	5IΔn	5-500A
A,AC	16,25,32,40,60,80,100	0.03,0.1,0.3	0.1s	0.08s	0.04s	0.04s
S	16,25,32,40,60,80,100	0.1,0.3	0.13s-0.5s	0.06-0.02s	0.05-0.15s	0.05-0.15s

Wiring

The suitable conductors should be used for connection,see table below for relative parameters.

Rated current In(A)	Nominal cross section current area of lead(mm²）	Tightinge torque(Nm)
25	4	M6 2.5
32	6
40	10
63	16
80	25
100	35

Features

When designing residual current devices,manufacturing technology and type of routine tests,the IEC/EN 61008 standards were considered.Important features are: