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Personal protection on construction and assembly sites

The Professional PRCD-S ADVANCED is an extended personal protection switch, also known as an RCD residual current circuit-breaker, and has been explicitly designed for use on construction sites and permanent outdoor use. But what is a PRCD-S circuit breaker anyway?

An RCD (residual current circuit breaker) is an electrical protective device. It is primarily used to protect against electric shocks. The RCD recognises the difference between incoming and outgoing current in a circuit. As soon as the residual current circuit breaker detects a fault current, whether due to an insulation fault or a current flow, e.g. via a person, the residual current circuit breaker switches off the circuit. This significantly reduces the risk of electric shock or fire caused by a residual current. As personal protection, the residual current device must trip and interrupt the circuit at a residual current of 30mA at the latest. In DGUV Information 203-006 (formerly BGI 608) Section 5.4.1, a PRCD-S is strongly recommended on construction and assembly sites and is also promoted accordingly by BG Bau. Compared to a simple residual current circuit-breaker, the PRCD-S has integrated protective conductor monitoring. Within a building installation, third parties are only permitted to connect electrical equipment directly to sockets with an upstream PRCD-S.

The PRCD-S ADVANCED offers protection against the following faulty electrical installations:

  • N or L conductor interruption
  • undervoltage
  • PE conductor interruption
  • Wiring fault
  • Voltage on PE conductor when switching on
  • External voltage on PE conductor during operation
  • Residual current 30mA

 

PRCDS-ADVANCED with oil-resistant rubber cable

The PRCD-S ADVANCED from brennenstuhl® with oil-resistant rubber cable utilises a low-resistance protective conductor detection of approx. 1kΩ. Only connections below approx. 1kΩ are accepted. For reliable protection against high-impedance unsafe contacts, as simple devices accept connections with several 100kΩ. Glove detection is also integrated. This means that the device cannot be switched on in the event of a fault, even with an insulated glove. An extended test cover including protective conductor detection and monitoring ensures additional safety. The PRCD-S fulfils all technical requirements for promotion by BG Bau.

 

PRCD-S ADVANCED for cable mounting

The PRCD-S ADVANCED from brennenstuhl® is also available as a mobile personal protection circuit breaker for cable mounting. Cables with a connection cross-section of 1.5mm2 or 2.5mm2 and a cable diameter of 8-14mm can be connected to it by a qualified electrician.