THE REX SYSTEM

E-T-A’s compact and flexible REX system presents the comprehensive DC 24 V protection and power distribution solution for mechanical engineering under the headline »all in one«.

It is a perfectly matched system, completely obtained from one source. Due to optimised functionalities, the product group requires amazingly few modules while offering considerable time and cost savings. The REX system provides highest transparency and remote diagnostics with regard to the mechanical design and additionally through direct access to available detailed data of the DC 24 V power distribution. This significantly increases machine availability.

Your benefits
• Increases machine uptime – through clear troubleshooting, high transparency and remote diagnosis
• Flexibility is ensured – through easy assembly or disassembly, modular design and convenient adjustment
• Saves min. 50 % time – through innovative and flexible connection technology
• Saves costs – as no further accessories e.g. current bridges or busbars are required
• Saves up to 65 % space – with modules that are only 12.5 mm wide

Difference between REX12 and REX22D

E-T-A 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 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 “I²t limiters”. This limitation makes effective

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 “I²t limiters”. This limitation makes effective protection possible even for switching

REX12 – At a glance

• Reduces downtimes through clear troubleshooting, high transparency and remote diagnosis
• Offers flexibility through adjustable and fixed current ratings
• Saves costs because no further accessories such as current bridges or busbars are required
• Saves space with modules that are only 12.5 mm wide and thus omission of additional minimum distances
• Offers flexibility through automatic recognition of the BASE or COM operating mode

REX22D – At a glance

• Offers all advantages of the REX12
• Increases transparency and flexibility through adjustable current ratings via slide
• Reduces the probability of failure due to the calculable limited max. current during current limitation
• Can be used for a wide range of applications – due to current ratings in the range of 1 A – 20 A