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RCCBs
RCCBs (Residual-Current Circuit Breakers) are electrical safety devices often integrated into circuit breaker panels or distribution boards. These protective devices are designed to protect electrical circuits against overloads, current leakage, or tripping caused by indirect contact. An RCCB safeguards individuals and valuable equipment from electrical shocks, fires, or electrocution and serves as the main disconnecting switch. Additionally, RCCBs are essential components in modern electrical installations, especially in areas with a risk of electric shocks, like homes, commercial buildings, and industrial facilities.
Operating Principle of RCCBs:
RCCBs work by constantly monitoring the current flowing through a circuit. In case of an imbalance between the current flowing and returning from the circuit, an RCCB indicates a current leakage to the ground. In such cases, the RCCB quickly detects the imbalance and trips the circuit, cutting off the power supply and preventing potential harm to people and equipment.
Potential Benefits of RCCBs:
Using residual circuit breakers provides unmatchable benefits, such as:
- They are easy to install and versatile.
- Safe performance, guaranteed with global brand certification.
- Reduce electrical hazards by timely detecting faults.
- Ensure personal safety, prevent fire, protect equipment, and reduce liability.
- Offer easy integration into DIN rails with slider actuators.
- Space saving with compact designs for residual and line current protection.
- Come as a complete range of products with accessories.
- Many package options are available with robust overload and shock protection.
RCCBs Types and Selection Parameters:
Generally, residual current circuit breakers are distinguished based on their trip sensitivity, current ratings, and tripping features. These devices come with 2, 3, or 4 poles as DIN rail mounted, while some common RCCB types include:
- Type A RCCBs – These circuit breakers provide higher protection and can detect both AC and pulsating DC imbalances. They are suitable for environments where electronic devices and equipment with rectifiers are used.
- Type B RCCBs – These RCCBs are the most advanced and sensitive type that can detect all kinds of residual currents, including pure DC. Type B RCCBs are used in medical facilities, laboratories, and industries where direct current is widely used.
- Type AC RCCBs – These RCCB types are designed to detect alternating current (AC) imbalances and protect against common electrical faults, such as touching live wires or equipment. However, bespoke circuit breakers are not as effective at detecting direct current defects.
MCBs and RCCBs: Understanding the Key Difference
MCBs, miniature circuit breakers, and RCCBs are circuit protection devices with prominent but contrasting functions. MCBs are designed to protect against overcurrent and short circuits, whereas RCCBs protect against electric shocks and earth leakages only. However, their combined operations are ideal for robust and effective protection purposes.
Typical Applications of RCCBs:
RCCBs are widely used in areas where electrical devices are consistently on the run. They are indispensable safety tools in various industrial, commercial, and residential facilities with multiple applications, such as:
- Construction Sites
- Medical Facilities
- Data Centers
- Agricultural Settings
- Outdoor Power Outlets
- Automotive and Food Processing Industry
- Marine Applications
- Residential Wiring, and more.
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2CCL562111E1064, ABB
The ABB has pluggable residual current operated circuit breaker with 2 poles and over-current protection, for the SMISSLINE TP System. The rated breaking capacity Icn is 6 kA and rated current is 6 A. The tripping characteristic of the circuit breaker is
IP20 degree of protection and rated sensitivity ( Δn) is 0.03
Operating temperature range is from -25°C to 40°C
New items
2CCL562330E1064 FS401MK-C6/0.03, ABB
The ABB has pluggable residual current operated circuit breaker with 2 poles and over-current protection, for the SMISSLINE TP System. The rated breaking capacity Icn is 10 kA and rated current is 6 A. The tripping characteristic of the circuit breaker is
IP20 degree of protection and rated sensitivity ( Δn) is 0.03
Operating temperature range is from -25°C to 40°C
New items
2CCL562330E1104 FS401MK-C10/0.03, ABB
The ABB has pluggable residual current operated circuit breaker with 2 poles and over-current protection, for the SMISSLINE TP System. The rated breaking capacity Icn is 10 kA and rated current is 10 A. The tripping characteristic of the circuit breaker i
IP20 degree of protection and rated sensitivity ( Δn) is 0.3
Operating temperature range is from -25°C to 40°C
New items
2CCL562330E1204 FS401MK-C20/0.3, ABB
The ABB has pluggable residual current operated circuit breaker with 2 poles and over-current protection, for the SMISSLINE TP System. The rated breaking capacity Icn is 10 kA and rated current is 12 A. The tripping characteristic of the circuit breaker i
IP20 degree of protection and rated sensitivity ( Δn) is 0.3
Operating temperature range is from -25°C to 40°C
New items
2CCL563120E0204, ABB
The ABB has pluggable residual current operated circuit breaker with 2 poles and over-current protection, for the SMISSLINE TP System. The rated breaking capacity Icn is 10 kA and rated current is 20 A. The tripping characteristic of the circuit breaker i
IP20 degree of protection and rated sensitivity ( Δn) is 0.1
Operating temperature range is from -25°C to 40°C
New items
2CCL563120E0254, ABB
The ABB has pluggable residual current operated circuit breaker with 2 poles and over-current protection, for the SMISSLINE TP System. The rated breaking capacity Icn is 10 kA and rated current is 25 A. The tripping characteristic of the circuit breaker i
IP20 degree of protection and rated sensitivity ( Δn) is 0.1
Operating temperature range is from -25°C to 40°C
New items
2CCL564110E0135 FS403M-B13/0.03, ABB
The ABB has pluggable residual current operated circuit breaker with 2 poles and over-current protection, for the SMISSLINE TP System. The rated breaking capacity Icn is 10 kA and rated current is 13 A. The tripping characteristic of the circuit breaker i
IP20 degree of protection and rated sensitivity ( Δn) is 0.03
Operating temperature range is from -25°C to 40°C
New items
2CCL564111E0203 FS403E-C20/0.03, ABB
The ABB has pluggable residual current operated circuit breaker with 2 poles and over-current protection, for the SMISSLINE TP System. The rated breaking capacity Icn is 6 kA and rated current is 20 A. The tripping characteristic of the circuit breaker is
IP20 degree of protection and rated sensitivity ( Δn) is 0.03
Operating temperature range is from -25°C to 40°C
New items
2CCF544130E0631 F404A-LF63/0.3, ABB
The ABB 4-pole residual current operated circuit breaker with instantaneous operation from series F404 (RCCB) is developed for the SMISSLINE TP System. The rated operational voltage range is 230 Vac to 400 Vac and rated current is 63 A.
IP20 degree of protection and rated sensitivity ( Δn) is 0.3
Operating temperature range is from -25°C to 40°C
New items
M9R81263, Schneider Electric
The Schneider Electric Multi GFP residual current circuit breaker. It is a 2P circuit breaker with 63A In rated current, a sensitivity of 26mA with a A-SI type protection class. It protects persons against electric shock by direct contact. It also protects installations against fire risks. The tripping upon fault is indicated by a red mechanical status indicator on the front panel.
storage temperature -40°C to 70°C
New items
2CCL562330E1324 FS401MK-C32/0.3, ABB
The ABB has pluggable residual current operated circuit breaker with 2 poles and over-current protection, for the SMISSLINE TP System. The rated breaking capacity Icn is 10 kA and rated current is 32 A. The tripping characteristic of the circuit breaker i
IP20 degree of protection and rated sensitivity ( Δn) is 0.3
Operating temperature range is from -25°C to 40°C
New items
2CSF204325R1250 F204 F-25/0,03, ABB
F204 Type F, RCCB in four poles with rated current 25-40-63A and sensitivity 30mA for the protection of more than one single phase circuit with a single device.
Type F features at a glance:
Type F RCDs offer the same range of protection and functionality as an RCD Type A APR
this means that they detect sinusoidal AC currents as well as pulsating DC currents. In addition to this, they are also tested according to IEC/EN 62423 which foresees the application of a simulated multi-frequency residual current with appropriate coefficient associated to the each level of frequency up to 1kHz.
The intervention characteristic has a short-time delayed which prevents unwanted tripping in case pulsed leakage currents of up to ten milliseconds occur at activation of filters.
The RCDs Type F have a surge current withstand capacity of more than 3kA and can accept superimposed smooth DC residual currents of up to 10mA without affecting their standard functionality.