Service continuity

The uncontrolled tripping of an electrical protective device in the telecommunications sector can entail huge economic consequences and directly affect the quality of the service you provide your customers.

Ensuring continuity of supply in the telecommunications, radio and television sector is the most important aspect to take into account, since a service outage due to an electrical fault will cause huge economic losses, affecting the performance of your installation.

To protect your facility correctly, you have to take into account the type of loads installed, since choosing the improper residual current protection can cause problems involving both spurious trips, constantly interrupting your service, and a failure to trip in the presence of a real leak, which can cause damage to people or to components in your facility.

Therefore, a key aspect to consider is the proper selection and installation of residual current and circuit breaker protective devices with automatic reclosing to ensure service continuity after a protective device trips, whether due to a short circuit, overcurrent or earth leakage.


Choosing the wrong residual current protection can cause a blockage in the presence of a real leak, putting people and the components of the facility at risk, and causing spurious trips if the leakage current is below the trip threshold.

Service continuity

Type-A residual current protection

Residual current protection devices designed to protect installations where there is a risk of AC current leakage and pulsing currents. It is the most widely used method for protecting LED lighting, computer systems, ventilation systems or pumping systems without a converter.

Service continuity

Type-B residual current protection

Protective equipment designed to protect installations where there is a risk of DC current earth leakage or a combination of AC and DC current leakage.

Installed to provide universal protection for HVAC systems, data processing centres and UPS.

Service continuity

Type A and B residual current protection with automatic reclosing

These devices have a system that automatically reconnects residual current devices, avoiding human interaction and solving a problem caused by a one-time fault.

Service continuity

Why install ultra-immunised protection with reclosing?

The reclosing system guarantees that whenever there is a real fault in the installation, the electricity will be automatically reconnected once the fault clears. The location of this type of facility is often difficult to access, so using this type of solution avoids unnecessary travel to manually reset the service, optimising your time and resources.

Residual current protection can trip with a leakage current well below its rated value, so selecting the right breaker will avoid the costs associated with undesired trips. The regulation specifies that an RCCB can trip with a leakage current more than 50% of its rated current, so if there are cumulative leaks in a line or switchboard, these can cause a service interruption even if the leakage current poses no hazard to the installation.

The best way to solve this problem is to install ultra-immunized RCCBs, since this type of solution contains electronics that guarantee the device will only open if the leakage current is at least 85% of the rated value, meaning it will only trip when the actual leakage current approaches the danger threshold.

Actuating RCCBs remotely through built-in communications makes maintenance more efficient, since lines can be disconnected and connected for only as long as necessary from the control centre, avoiding unnecessary travel.

Automatic reclosing

Protective devices with automatic reclosing prevent financial losses by avoiding both service outages and staff travel to the facility.

Type-B residual current protection

Protect every load in your installation the right way

Having computer equipment, UPS, HVAC or fans with variable-speed drives in your facility can lead to ground current leakage with a DC component. As a result, type-B residual current protection is the one required by manufacturers to ensure the smooth operation of their devices, since it is the only type that can detect both AC and DC leakage and trip the breaker when the leakage current is such that it can pose a risk to the facility or to the employees who work there.


Type-A residual current protection

Solutions for AC current leaks

Type-B residual current protection

Solutions for DC and/or AC leakage current

Type-A residual current protection with automatic reclosing

Solutions for AC and pulsing leaks

Type-B residual current protection with automatic reclosing

Solutions for DC and/or AC and pulsing leaks