ZETTLER Relays – Application Spotlight, September 2017.
When switching higher DC voltages, arcs occur which considerably reduce the lifetime of the relay. This is especially problematic when switching off, when there is enough energy, the arc is not extinguished and it this can cause damage of the relay. To prevent this, special measures are required.
With the help of a permanent magnet, which is mounted inside the relay, the resulting turn-off arc is deflected by the so-called blow magnet from the contact point in order to extinguish the arc. ZETTLER's new Power Relays series AZ DC110 has exactly such a mechanism and is intended to be used in general switching applications of medium DC loads such as 16 A 180 VDC, 10 A 300 VDC and 5 A 420 VDC (UL 508 general use / resistive) as well as for bridging pre-charge resistors in inverter circuits for example in BLDC motors (brushless DC motors). The loads are approved by UL and TÜV with 30,000 switching cycles with a maximum ambient temperature of 105 ° C. With the dimensions of 29.3 mm x 12.7 mm x 18.0 mm, the relays have a well-known layout and compact design in the standard 5 mm grid.
The new AZ DC105-1AH, which is designed for voltages of 60 VDC, also has a blow magnet and is available in versions up to 100 A or 150 A (version "T"). This series is aimed at applications in the field of battery disconnection. A version for loads of 100 A 48 VDC without blow magnet is also available. The dimensions of all versions are 47.6 mm x 40.0 mm x 45.1 mm.
For similar solutions or to discuss the wide variety of application opportunities for the range of ZETTLER electronics relays, please contact:
ZETTLER Electronics, Europe
Tel: +49(0)89-800 97 135
About ZETTLER electronics
ZETTLER electronics, based in Puchheim (near Munich), is an internationally operating manufacturer and distributor of electromechanical components and assemblies. ZETTLER offers its customers a carefully coordinated product range of relays, magnetics, LCD modules, switches and fans for latest-generation industrial and consumer electronics. Read more at www.ZETTLERelectronics.com.