The REX circuit protectors meet all technical and economic requirements of mechanical engineering The REX12 modules are available in all standard fixed and adjustable current ratings from 1 A to 10 A The REX22D circuit protectors can be selected with fixed current ratings of 12 A 16 A and 20 A or with adjustable current ratings from 1 A to 20 A The time current characteristic of the REX12 is characterised by its unbeatable cost efficiency and also provides effective selective THE REX SYSTEM Difference between REX12 and REX22D overcurrent protection for many DC 24 V applications The REX12 thus achieves switch on capacities of 20 000 µF With the REX22D the output current is actively limited when switching on current intensive loads or in the event of a short circuit In the event of a short circuit the limitation causes the max current I to adjust to a defined value of the current rating for a time t Since the current flows quadratically into the calculation for the transmission energy one also speaks of so called I t limiters This limitation makes effective protection possible even for switching power supplies with lower current reserves as well as long cable lengths with small cross sections In order to be able to switch on powerful loads effortlessly the limited current can be made available situationally for a longer period of time Switch on capacities of 40 000µF are thus no problem 10

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