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Thermal and electronic overload relays are used for current-dependent overload protection in the main circuit and thus for the protection of any kind of machines and installations. Monitoring relays act as apparent/active current monitoring. They detect too high and too low current, mains and voltage errors, wire break and phase failure in the whole installation. Electrical relays ensure a reduction of the power loss by up to 98 % as compared to thermal overload relays.
Use of current monitoring relays
Monitoring relays are used in all areas of electrical switchgear technology. The main tasks are:
The monitoring relays can be easily mounted - thanks to the matching size and user-friendly screw connection - and integrated into the system. Thanks to their compact design there is more space in the control cabinet.
Automation24 carries different types of monitoring relays from the company Siemens. Since it is possible to adjust threshold values within a large setting range, it is not only the motor that is perfectly protected but also the whole application. Error messages are directly displayed ensuring fast actions. Monitoring relays from Siemens are available in two sizes matching the Siemens contactors from the SIRIUS modular system.
At Automation24 you find a large selection of monitoring relays at very favourable prices. Select the monitoring relay suitable for your application now!