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Pepperl+Fuchs Z728.H | Z‑System Zener Diode Barrier | 1‑Channel | 26.5 V | 80 mA | DIN‑Rail Mount
Overview
The Z728.H is a single‑channel Zener diode barrier from Pepperl+Fuchs’ Z‑System designed to protect equipment in hazardous zones. With DC non‑intrinsically safe input and positive polarity, this device limits voltage and current to safely interface between intrinsic safety and safe areas. Its compact DIN‑rail mount design and certifications make it suitable for industrial installations in zones 0, 1, 2, and division 1, 2 environments .
Key Features
-
Single‑channel DC barrier with positive polarity
-
Nominal/series resistance: 240 Ω (≤ 250 Ω max)
-
Fuse rating: 80 mA
-
DIN‑rail mounting for compact installation
-
Industrial approvals: ATEX, IECEx, FM, cULus for zone/div safety
Technical Specifications
Specification | Value |
---|---|
Part Number | Z728.H (alternate P/N 071938) |
Channels | 1-channel |
Max Working Voltage (Uo) | 28 V |
Measurement Loop Voltage | 26.5 V at 10 µA |
Fuse Rating | 80 mA |
Nominal/Max Resistance | 240 Ω / 250 Ω |
Temperature Range | –20 °C to +60 °C |
Protection Class | IP20 |
Mounting Type | 35 mm DIN rail (EN 60715) |
Certifications | ATEX, IECEx ([Ex ia Ga] IIC, [Ex ia Da] IIIC), FM, UL/cUL |
Dimensions (W×H×D) | 12.5 × 115 × 116 mm |
Weight | ~150 g |
Applications
-
Protecting sensors, switches, and field devices in hazardous zones
-
Intrinsically safe barrier for signal and instrumentation lines
-
Industrial automation networks with zone 0/1/2 requirements
-
Process control in petrochemical, refinery, or pharmaceutical plants
-
Robust DIN‑rail design for control panels and junction boxes
Why Choose the Z728.H
-
Certified for ATEX and IECEx explosive atmospheres
-
Reliable voltage and current limitation for intrinsic safety
-
Compact, single-channel solution with high performance
-
Easy to install on standard DIN rails
-
Durable components for long-term operation in industrial environments
Order Now
The Pepperl+Fuchs Z728.H Zener diode barrier is available and ships worldwide.
Description
Pepperl+Fuchs Z728.H | Z‑System Zener Diode Barrier | 1‑Channel | 26.5 V | 80 mA | DIN‑Rail Mount
Overview
The Z728.H is a single‑channel Zener diode barrier from Pepperl+Fuchs’ Z‑System designed to protect equipment in hazardous zones. With DC non‑intrinsically safe input and positive polarity, this device limits voltage and current to safely interface between intrinsic safety and safe areas. Its compact DIN‑rail mount design and certifications make it suitable for industrial installations in zones 0, 1, 2, and division 1, 2 environments .
Key Features
-
Single‑channel DC barrier with positive polarity
-
Nominal/series resistance: 240 Ω (≤ 250 Ω max)
-
Fuse rating: 80 mA
-
DIN‑rail mounting for compact installation
-
Industrial approvals: ATEX, IECEx, FM, cULus for zone/div safety
Technical Specifications
Specification | Value |
---|---|
Part Number | Z728.H (alternate P/N 071938) |
Channels | 1-channel |
Max Working Voltage (Uo) | 28 V |
Measurement Loop Voltage | 26.5 V at 10 µA |
Fuse Rating | 80 mA |
Nominal/Max Resistance | 240 Ω / 250 Ω |
Temperature Range | –20 °C to +60 °C |
Protection Class | IP20 |
Mounting Type | 35 mm DIN rail (EN 60715) |
Certifications | ATEX, IECEx ([Ex ia Ga] IIC, [Ex ia Da] IIIC), FM, UL/cUL |
Dimensions (W×H×D) | 12.5 × 115 × 116 mm |
Weight | ~150 g |
Applications
-
Protecting sensors, switches, and field devices in hazardous zones
-
Intrinsically safe barrier for signal and instrumentation lines
-
Industrial automation networks with zone 0/1/2 requirements
-
Process control in petrochemical, refinery, or pharmaceutical plants
-
Robust DIN‑rail design for control panels and junction boxes
Why Choose the Z728.H
-
Certified for ATEX and IECEx explosive atmospheres
-
Reliable voltage and current limitation for intrinsic safety
-
Compact, single-channel solution with high performance
-
Easy to install on standard DIN rails
-
Durable components for long-term operation in industrial environments
Order Now
The Pepperl+Fuchs Z728.H Zener diode barrier is available and ships worldwide.