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The safety switch is a fuse that reacts to the leakage current and issues the order to cut off the power.
The operation of the safety switch is based on the calculation of the difference in current in the circuit, so that if this difference exceeds a certain limit, it indicates a leakage current and cuts the circuit. This switch is available in different types from 25 to 63 amps with a sensitivity of 30 or 300 milliamps. In addition to preventing electric shocks, this switch is also used to prevent fires caused by leakage current.
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Human protection against direct contact: 6, 10 and 30 mA are usually considered. But due to the frequent interruption of the circuit during the occurrence of leakage currents of 6 and 10 mA, the most sensitive used is 30 mA.
Human protection against indirect contact: 300 and 500 milliamps are usually considered. These types of parts are mandatory in TT systems and recommended for lateral safety in TN and IT systems.
Protection of equipment against the risk of fire: 300 mA is usually considered.
Company | سایت اتوماسیون 24 |
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Tel | +98 25-3×××5444, +98 25-3×××3444 |
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Website | http://www.automation24.ir |
Country | Iran |
Province | Qom |
Address | قم -میدان امام خمینی- بلوار شهید بهشتی - پلاک 67 - فروشگاه اینترنتی اتوماسیون 24 |