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The Zener Barrier is a 2-channel, AC version device designed for intrinsic safety applications in hazardous environments. It operates with a working voltage of 15 V at 10 µ-A and features a maximum series resistance of 136 Ω.
The Zener Barrier belongs to a critical category of intrinsic safety barriers that provide essential protection for electronic equipment operating in potentially explosive atmospheres. These devices are designed to limit the energy available in the hazardous area, ensuring that any sparks or thermal effects produced cannot ignite flammable gases or vapors. The Zener Barrier effectively achieves this by utilizing Zener diodes to clamp voltages and limit current, making it suitable for various industrial applications.
Commonly used in fields such as oil and gas, chemical processing, and pharmaceuticals, the Zener Barrier is typically deployed in applications requiring safe signal transmission between non-hazardous and hazardous areas. Its DIN rail mounting feature facilitates easy installation and integration into existing control systems. The star connection configuration allows for simple wiring and enhances the device’s reliability in demanding environments.
| Series resistance | min. 117 Ω |
| Certificate | TV 99 ATEX 1484 X |
| IECEx approval | IECEx BAS 09.0142 IECEx BAS 17.0091X |
| Construction type | modular terminal housing , see system description |
| Relative humidity | max. 75 % , without condensation |
| Type | AC version |
| Connection | screw terminals |
| EU-type examination certificate | BAS 01 ATEX 7005 |
| Connection | terminals 5, 6; 7, 8 |
| Degree of protection | IEC 60529 |
| Connection | terminals 1, 2; 3, 4 |
| Dimensions | 12.5 x 115 x 110 mm (0.5 x 4.5 x 4.3 inch) |
| Storage temperature | -25 … 70 °C (-13 … 158 °F) |
| Mass | approx. 150 g |
| Ambient temperature | -20 … 60 °C (-4 … 140 °F) |
| Supplementary information | Observe the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com. |
| Fuse rating | 50 mA |
| Series resistance | max. 136 Ω |
| Mounting | on 35 mm DIN mounting rail acc. to EN 60715:2001 |
| Core cross-section | max. 2 x 2.5 mm2 |
| Degree of protection | IP20 |
| Nominal resistance | 120 Ω |
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