Pepperl+Fuchs Z779.H.F Zener Barrier
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Zener Barrier
An intrinsic safety Zener barrier designed for explosion-proof signal protection in hazardous areas. Ideal for measurement and supply circuits in industrial automation and process control systems.AreaAutomationBarrierDINExplosionHazardousIndustrialIntrinsicisolationModulePepperl+FuchsProofProtectionrailSafetySignalZ-SystemZener
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Pepperl+Fuchs Z779.H.F Zener Barrier
A high-reliability intrinsic safety Zener barrier designed for explosion-proof signal isolation and protection in hazardous areas. Part of the Pepperl+Fuchs Z-SYSTEM, this module ensures safe limitation of voltage, current, and power for measurement and supply circuits in industrial automation environments. Manufacturer: Pepperl+Fuchs
Type: Zener Barrier
Model: Z779.H.F
Part No.: 072177
Serial No.: 40000170839481
Family: Z-SYSTEM
Supply “ Safety Parameters
Working Voltage
Environmental & Mechanical Data
| Nominal Resistance | 240 Ohm |
| Voltage | 28 V |
| Current | 120 mA |
| Power | 830 mW |
| Maximum Safe Voltage (Um) | 250 V |
| Series Resistance | max. 273 Ohm |
| Fuse Rating | 50 mA |
| Connection | Terminals 1, 2; 3, 4 |
| Supply Loop | max. 27 V |
| Measurement Loop | max. 26.5 V at 10 µA |
| Ambient Temperature | -20 / +60 °C |
| Degree of Protection | IP20 |
| Connection Type | Screw Terminals |
| Core Cross Section | max. 2 × 2.5 mm² |
| Dimensions | 12.5 × 115 × 116 mm |
| Construction Type | Modular Terminal Housing |
| Mounting | 35 mm DIN Rail (EN 60715:2001) |
| Explosion Proof | Yes |
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