SIEMENS RCCB Supplier
More safety for humans, plants and assets
The number of electrical consumers in residential homes and commercial buildings has increased significantly in recent decades. The latest electrical devices often have quite different characteristics in terms of current consumption than earlier devices, due to frequency converters in washing machines, for example, or switched-mode power supply units in TVs, PCs or LED lights. There are also decentralized power producers like photovoltaic systems or charging devices for electric vehicles. All of this requires new protection strategies for electrical installations. This also includes appropriate residual current protection devices or residual current circuit breakers that will cut the current immediately and safely in the event of a fault.
Preventing electric shocks and electrical fires
Wiring errors, insulation faults, defective devices or faulty work on electrical systems can trigger dangerous residual currents – and cause accidents or electrical fires as a consequence. Residual current protective devices (RCDs) can prevent these from happening. They protect against dangerous shock currents when conductive objects that are under tension are touched, either directly or indirectly. Residual current operated circuit breakers (RCCBs) quickly and safely cut the power to the monitored circuit if a set differential current is exceeded. For many areas of application, the installation of RCCBs with rated residual currents no greater than 30 mA is mandatory in new buildings. A that are intended for use by non-professionals and otherwise for general use.
RCCBs – the right type for all cases
Our SIEMENS portfolio of residual current protective devices (RCDs) includes basic residual current operated circuit breakers (RCCBs) with no integrated overvoltage protection, combined RCBO with residual current detection and overvoltage protection in a single device, and, as an alternative, RC unit that can be fitted to miniature circuit breakers (MCBs). All RCDs are available in different types and versions suited to detecting different types of residual current and different areas of application. We are a wild range of SIEMENS RCCB Supplier in Kolkata, West Bengal, Odisha, Bihar, Jharkhand.
RCCBs, type A
RCCBs, type A trip with both sinusoidal alternating currents (type AC) and pulsating DC residual currents. They are used mainly with single-phase consumers with electrical components in the supply unit, e.g. in residential and functional structures.
5SV3 RCCBs SIQUENCE, type B/B+
Smooth DC residual currents may arise with the use of three-phase frequency converters, medical devices, UPS systems, and when charging electric vehicles. This is where 5SV3 RCCBs SIQUENCE, type B/B+ with integrated SIGRES function (see below, patented SIGRES version) come into play. They have an additional converter to detect DC residual currents and are suitable for use in a three-phase system upstream of input current circuits with rectifiers.
RCCBs, type F
Many state-of-the-art devices, e.g. washing machines or heat pumps, use single-phase frequency converters. These can generate residual currents at the output side, caused by a mixture of frequencies with frequency components in the kilohertz range. RCCBs, type F are best suited for this purpose, since they expand the range of functions offered by type A. They have an impulse withstand strength of > 3 kA and a current carrying capacity of up to 10 mA with smooth DC residual currents.
RCBOs, type AC, type A and type F
RCBOs (Residual current operated circuit breakers with overcurrent protection) combine residual current detection and overcurrent protection in a single device. The new 5SV1 RCBOs for the first time combine residual current and overload protection in one modular width (MW). This enables more protection devices to be installed in the distribution board and existing installations to be easily expanded with new protection functions in a space-saving solution. The protection devices can also be connected in a 5SM6 AFD unit – thus offering personal, line and preventive fire protection.
RC units for use with miniature circuit breakers
RC units can be fitted to miniature circuit breakers (MCBs) as per DIN EN 61009-1 (VDE 0664-20). Used in combination with a MCB, they provide the same functionality as an RCBO. The benefits are a high level of flexibility in use and elevated protection functionalities.
