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Intrinsically Safe |

Our intrinsically safe or ATEX approved reed relays & optocouplers are tested such that they will not become an ignition point when subjected to short circuits or adjacent component failures. They must also switch to a defined state when subjected to overload conditions. Our optocoupler series are all ideal for these types of environments, such as in the mining industry, chemical processing plants, refineries, power stations and high dust producing plants. Any potentially flammable atmospheres represent areas of applications for these products. Standards for these components are presented in EN500200. The required air and creepage paths as well as the electric strength are defined in detail as follows: For voltage specification, a peak voltage of 375 Volts must not be exceeded in order to meet accepted worldwide standards. The sum of the input and output voltages must not be higher than 375 Volts Peak. The coil input has a voltage of 24 Volts max. and the contacts produce 230 VRMS or 325 volts peak output. Input plus output = 24 + 325 = 349 Volts peak. Here the safety margin for the voltage for the input and output meet their peak voltage limit of 375 volts. The air path for isolation of this voltage is 6mm and the creepage path is 10mm. The isolation inside the component through potting compounds is 2mm. Another important value is the Comparative Tracking index (CTI) value of plastic. In this case, the value must be greater than 175. The electric strength between the input and output is tested at 1500 VRMS or 2x the nominal voltage +1000

567 Series Optocouplers

567 Series Optocouplers for the galvanic separation of intrinsic safety (EXi) circuits, Isolation voltage min. 4kVDC, cutoff 500kHZ, ATEX Certified (11ATEX 0086, DIN EN 60062). Insulation resistance input /output up to 10^13 Ω. Distance between input and output for highest safety requirements up to 14mm. Galvanic separation and minor coupling capacitance between input and output circuit. Analog & digital signal transfer is possible. Minor output delay times compared to relays. Long life due to non mechanical wear. Magnetic fields do not impact operation. A photo-diode makes for very short cycle times. Able to invert the output signal during transfer.

Certificate of Type Examination

Declaration of Conformity

Mounting Instruction

535 Series Optocouplers

535 Series Optocouplers for the galvanic separation of intrinsic safety (EXi) circuits, Isolation voltage min. 4kVDC, CTR min. 3.0, cutoff 2kHZ, ATEX Certified (11ATEX 0086, DIN EN 60062). Insulation resistance input /output up to 10^13 Ω. Distance between input and output for highest safety requirements up to 14.5mm. Galvanic separation and minor coupling capacitance between input and output circuit. Analog & digital signal transfer is possible. Minor output delay times compared to relays. Long life due to non mechanical wear. Magnetic fields do not impact operation. A photo-diode makes for very short cycle times. Able to invert the output signal during transfer.

Certificate of Type Examination

Declaration of Conformity

Mounting Instruction

525 Series Optocouplers

525 Series Optocouplers for the galvanic separation of intrinsic safety (EXi) circuits, Isolation voltage min. 4kVDC, CTR min. 0.5, cutoff 50kHZ, ATEX Certified (11ATEX 0086, DIN EN 60062). Insulation resistance input /output up to 10^12 Ω. Distance between input and output for highest safety requirements up to 14.5mm. Galvanic separation and minor coupling capacitance between input and output circuit. Analog & digital signal transfer is possible. Minor output delay times compared to relays. Long life due to non mechanical wear. Magnetic fields do not impact operation. A photo-diode makes for very short cycle times. Able to invert the output signal during transfer.

Certificate of Type Examination

Declaration of Conformity

Mounting Instruction

522 Series Optocouplers

Miniature 522 Series Optocouplers for the galvanic separation of intrinsic safety (EXi) circuits, Isolation voltage min. 4kVDC, CTR min. 0.5, cutoff 85kHZ, ATEX Certified (11ATEX 0086, DIN EN 60062). Insulation resistance input /output up to 10^12 Ω. Distance between input and output for highest safety requirements up to 12mm. Galvanic separation and minor coupling capacitance between input and output circuit. Analog & digital signal transfer is possible. Minor output delay times compared to relays. Long life due to non mechanical wear. Magnetic fields do not impact operation. A photo-diode makes for very short cycle times. Able to invert the output signal during transfer.

Certificate of Type Examination

Declaration of Conformity

Mounting Instruction

MRX Reed Relay

The MRX Series is an ATEX approved reed relay according to PTB-01 ATEX 2050 U and is used for the galvanic separation of intrinsic safety and non-intrinsic safety circuits. The MRX ATEX approved reed relay is also suitable for circuits of the category “ia” due to its peak voltage of 375 Voltage. Switching configuration with up to 4 form A switches or 1 form C switch.

Declaration of Conformity

Mounting Instruction

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