RCBO Residual Current with Overcurrent Protection 1p +N 50/60Hz 30 100 300mA AC Breaker

• Breaking Capacity: Low Voltage Circuit Breakers
• Operation: Electric Type
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Air
• Installation: DIN Rail
• Structure: RCBO
• Model NO.: ESRO
• Poles Number: 2p, 4p
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection), RCCB, RCBO
• Certification: CE, SAA
• Rated Voltage: 230/400V AC
• Application: Solar PV System/EV Charger System
• Inc: 6/10ka
• Transport Package: by Sea/Air
• Specification: box
• Trademark: Onccy
• Origin: China
• HS Code: 8536490090
• Production Capacity: 1000000PC/Year

Product Description

Residual Current Circuit Breaker with Over Current Protection RCBO/RCCB

Residual Current Breaker with Over-Current protection (RCBO) is a safety device used in electrical systems that combines the functions of a Residual Current Device (RCD) and a Mini Circuit Breaker (MCB). An RCBO is designed to protect both people and equipment by detecting residual currents (leakage currents) and over-currents (overloads and short circuits). It is commonly used in residential, commercial, and industrial applications to enhance the safety and reliability of electrical installations.

Residual Current Protection

An RCBO constantly monitors the current flowing through the live (hot) and neutral wires of a circuit. Under normal conditions, the current flowing in both wires should be equal. However, if there is a leakage current (e.g., due to a faulty appliance or current flowing to the ground through a person), the RCBO detects the imbalance and trips, disconnecting the circuit to prevent electric shock.

Over-Current Protection

Similar to an MCB, an RCBO also offers protection against overloads and short circuits. Overloads occur when too much current flows through a circuit, usually due to too many devices being connected or a malfunctioning device. Short circuits happen when the live and neutral wires come into direct contact, resulting in an extremely high current flow. In both cases, the RCBO will trip and disconnect the circuit to prevent damage to electrical equipment, wiring, and reduce the risk of fire.

Combined Protection

By integrating both residual current and over-current protection in a single device, an RCBO provides comprehensive protection for electrical circuits, enhancing safety and reducing the need for separate RCDs and MCBs.

Easy Reset

Once the cause of the trip has been identified and resolved, the RCBO can be easily reset, restoring power to the circuit.

ESRO3-40 RCBO Residual Current AC Breaker with Overcurrent Protection 1P +N

Product Benefits :

• Pole No. to 1P +N
• Rated current to 6-40A
• Rated voltage to 230/400V~

Technical Data
 

Technical Data

Mode	Electronic / Electromagnetic
Type	A / AC /
Tripping curve	B C D
Pole No.	1P +N
Rated voltage	230/400V~
Rated frequency	50/60Hz

 

Rated current	6-40A
Rated residual operating current(IΔn)	30.100.300mA
Residual operating current range	0.5 IΔn~IΔn
Rated conditional short-circuit current(lnc)	6000A
Energy limiting	class 3
Electrical and Mechanical life	20000

 

Overload Current Protection Characteristics
Test Procedure	Type	Test Current	Initial State	Tripping or Non-tripping Time Limit	Expected Result	Remark
A	B.C.D	1.13In	Cold	t≤1h	no tripping
B	B.C.D	1.45In	After test A	t≤1h	tripping	The current steadily rises to the specified value within 5s
C	B.C.D	2.55In	Cold	1s<t<60s	tripping
D	B	3In	Cold	t≤0.1s	no tripping	Turn on the auxiliary switch to close the current
	C	5In
	D	10In
E	B	5In	Cold	t≤0.1s	tripping	Turn on the auxiliary switch to close the current
	C	10In
	D	20In

 

Residual Current Operating Breaking Time
Type	In/A	IΔn/A	Residual Current(IΔ)Is Corresponding To The Following Breaking Time(S)
AC type	Any value	Any value	In	2In	5In	5A.10A.20A.50A.100A.200A.500A
A type		>0.01	1.4In	2.8In	7In
			0.3	0.15	0.04	0.04	Max breaking time

 

FAQ
Q: Are you trading company or manufacturer ?
A: We are manufacturer. We have 30,000 square meters of self-owned plant.

Q: Do you have any certificates?
A: Yes,we have UL, TUV, CB, SAA, CCC, CE and other certifications.

Q: How do we make a quick response to customer , 5 inquiry ?
A: Our professional team will reply you online or by email,Skype, whatsApp and so on.

Q: Do you have any exporting experience?Which countries did you export to before?
A: We have lots of exporting experience and customers in many countries,such as America, Japan,Australia,UAE,Canada,Vietnam,Turkey,Thailand,Russia,UK,etc.

Q:Can you supply samples for checking ?
A: Yes, we can supply samples, pls contact for detailed required.

Q:How long is your delivery time?
A: Generally it is within 3days for small qty. Or it is around 15-20 days to a general order.

Q: What is the standard of package of your goods?
A: Export standard package or special package according to customer requirement.

Q:How about inspection?
A: We have the whole inspection system from raw material to end products include transient test, delay test,mechanical life test and so on.Q:What is the service offered by company?

A: We have the professional engineer team which can design and develop the mould to arrive different customer requirements. We also have the professional sales team to offer good service from pre-sale to after-sale.