ATEX approved Reed Relays & Optocouplers

Our intrinsically safe or ATEX approved reed relays & optocouplers are tested such that they will not become an ignition point. Not even in the presence of short circuits or adjacent component failures. And ATEX reed relays must also switch to a defined state when subjected to overload conditions. Our optocoupler series are designed for these types of hazardous environments. Examples of hazardous locations include mining, chemical processing plants, refineries, power stations and high dust producing plants. As well as any potentially flammable atmospheres. Standards for intrinsically safe components are presented in EN500200.

Basic technical specifications*
Series Description
Coil Voltage
Coil Resistance (Ω) Contact Form
Rated Power Max. (W)
MRX 5V, 12V, 24V 360 – 5580 1-4A (N.O.), 1C (Changeover) 10
Optocouplers Main Technical Specifications*
Series Description
Isolation Voltage Input/Output Min. (VDC) Supply Voltage Max. (VDC) CTR Ic/If (If=10mA) min. Turn On/Off Time (µs) Collector-Emitter Voltage  Max. (VDC) Creeping Distance, Air Path I/O Min. (mm) Ambient Temperature
522 4000 0,5 3,5/2,6 32 12 -40 až 85
525 4000 0,5 5,5/4,2 32 14,5 -40 až 85
535 4000 3 19,5/212 32 14,5 -40 až 85
567 4000 5 0,5/0,5 14 -20 až 85

* Complete technical specifications can be found in the contact series data sheet

  • N.O. – Normally Open
  • N.C. – Normally Close