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Transcript
MCB, Malmbergs, 20A, 2P, B-Characteristic Item: 2149059 Product information B characteristic 10kA, rated breaking capacity = 50A. Our MCBs belong to a new generation of miniature circuit breakers. They conform to the latest European Norm EN 60 898 (IEC898) and EN 60947-2. The MCBs are very easy to mount. Cable and busbar can be connected simultaneously at the bottom of the MCBs. Pin- or fork-type busbar can be used. Cable can also be used for connection at the top of the MCBs. Thermal overload current release and electromagnetic short circuit current release makes the MCBs suitable for the protection of buildings and industrial electrical installations and equipment. It automatically trips at a preset value. Usage Generally a high breaking MCB provides a better protection than a low breaking, since it trips faster at short circuit. A fast MCB also improves the selectivity for the preconnected fuse, which is why a fast MCB should be chosen, since it does not break at starting currents etc. To improve selectivity, the preconnected fuse should be slow and have as large rated current as possible. B Characteristic Function: protection and control of the circuits against overloads and short-circuits; protection of cables in TN and IT systems. C Characteristic Function: protection and control of the circuits against overloads and Malmbergs Elektriska AB (publ) PO Box 144, SE-692 23 Kumla, SWEDEN Phone: +46 (0)19 58 77 00 | Fax: +46 (0)19 57 11 77 | [email protected] www.malmbergs.com Issue date: 2016-11-02 MCB, Malmbergs, 20A, 2P, B-Characteristic Item: 2149059 short-circuits; protection for resistive and inductive loads with low inrush current. Specifications Class of discrimination 3 Colour of toggle Blue Connection 1.5-16 mm² alt. 2x(1.5-10) mm² or busbar Frequency 50/60Hz Height from DIN rail 75 mm after DIN 43880 IP rating IP54 Mechanical endurance 20 000 switches No. of poles 2 Nominal voltage 230/400V, 400V AC Rated current 20A Rated short-circuit current 10kA, acc. to DIN/VDE 0641 Temperature range -5°C to + 40°C Type of connection Separate connections for cable/busbar (pin type) and busbar (fork type) are tightened with the same screw Width 35.4 mm Malmbergs Elektriska AB (publ) PO Box 144, SE-692 23 Kumla, SWEDEN Phone: +46 (0)19 58 77 00 | Fax: +46 (0)19 57 11 77 | [email protected] www.malmbergs.com Issue date: 2016-11-02