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"Found the component i was looking for ad a great price. Great support from the staff as I was paying using a wire transfer. - Quick delivery and very good packaging"
The Pepperl + Fuchs Z728 Zener Barrier is a vital component designed to ensure the safety and integrity of electrical systems in hazardous areas. This one-channel, DC version with positive polarity is engineered to prevent the transfer of excessive energy from safe areas into explosive environments, thereby mitigating the risk of ignition and ensuring operational safety. With a working voltage of 26.5 V at 10 µA and a maximum series resistance of 327 Ω, the Z728 is built to maintain a controlled environment for your electrical connections.
The Zener Barrier's robust design includes a nominal resistance of 300 Ω and a fuse rating of 50 mA, which together provide a reliable safeguard against electrical surges. The device is designed for easy mounting on a 35 mm DIN rail, in accordance with DIN EN 60715, making it a convenient and space-saving solution for panel installations.
Constructed with a modular terminal housing, the Z728 offers a degree of protection compliant with IEC 60529 standards, ensuring durability and longevity in a variety of industrial settings. The ambient operating temperature range of -20 to 60 °C and storage temperature range of -25 to 70 °C make it suitable for challenging environmental conditions.
The Zener Barrier is an essential component for industries operating in potentially explosive atmospheres, providing a high level of protection and peace of mind. Its meticulous design and construction make it a reliable choice for safeguarding your electrical systems against hazardous energy transfers.
| Specification | Description |
|---|---|
| Part Number | Z728 |
| Alternative Part Number | Z728 |
| Manufacturer | Pepperl + Fuchs |
| Type | Zener Barrier |
| Polarity | DC version, positive polarity |
| Nominal Resistance | Varies by model (240 Ω to 300 Ω) |
| Series Resistance | Varies by model (max. 250 Ω to 341 Ω) |
| Fuse Rating | Varies by model (50 mA to 80 mA) |
| Hazardous Area Connection | Terminals 1, 2 |
| Safe Area Connection | Terminals 7, 8 |
| Working Voltage | Max. 26.9 V, 26.5 V at 10 µA |
| Degree of Protection | IEC 60529 |
| Ambient Temperature Range | -20 ... 60 °C (-4 ... 140 °F) |
| Storage Temperature Range | -25 ... 70 °C (-13 ... 158 °F) |
| Relative Humidity | Max. 75%, without moisture condensation |
| Protection Degree | IP20 |
| Connection | Screw terminals, max. core cross-section 2 x 2.5 mm² |
| Mass | Approx. 150 g |
| Dimensions | 12.5 x 115 x 110 mm (0.5 x 4.5 x 4.3 in) |
| Construction Type | Modular terminal housing |
| Mounting | On 35 mm DIN mounting rail acc. to EN 60715:2001 |
| EC-Type Examination Certificate | Varies by model (BAS 00 ATEX 7096, BAS 01 ATEX 7005, etc.) |
| Group, Category, Type of Protection | Varies by model (e.g., ¬ II (1)GD, I (M1) [Ex ia] IIC, etc.) |
| Voltage Uo | 28 V |
| Current Io | Varies by model (93 mA to 120 mA) |
| Power Po | Varies by model (650 mW to 830 mW) |
| Maximum Safe Voltage Um | 250 V |
| Series Resistance (min.) | Varies by model (min. 235 Ω to 301 Ω) |
| International Approvals | FM, UL, CSA, IECEx approvals |
| Directive Conformity | Directive 94/9/EC, EN 60079-0:2012, EN 60079-11:2012, EN 60079-15:2010, etc. |
Thumbs up to Rob for helping out with an urgent requirement we had on a Friday afternoon. The part we wanted was over in Europe and Rob went out of his way to get it ordered and on site here for the following Tuesday.City Bearings
Absolutely fantastic service. Rob was very helpful. Great communication. Requested part was shipped in no time.Konrad Eliaszuk
Found the component i was looking for ad a great price. Great support from the staff as I was paying using a wire transfer. - Quick delivery and very good packaging.Adriano Tiberi
Found the part we needed at the best price. Spoke to Rob to make sure the part was actually in stock, as many companies don't actually have the part available to ship. It was in stock ready and the part was checked and shipped and received within a couple of days from their German stock. Would definitely use again and recommend.Chris Sentance
FIRST TIME WORKING WITH MARVO. THEY HAD WHAT I NEEDED AND TOOK GREAT CARE OF ME AND GOT MY ORDER OUT IMMEDITELY. WAS VERY IMPRESSED WITH THE SERVICE AND THE PERSON I SPOKE WITH. I WILL DEFINITELY WORK WITH THEM QGAIN IN THE FUTURE.Robert Cohen
After ordering an urgent part from Marvo i received a great level of customer service and Rob was very helpful.Claire Hinchliff
Thumbs up to Rob for helping out with an urgent requirement we had on a Friday afternoon. The part we wanted was over in Europe and Rob went out of his way to get it ordered and on site here for the following Tuesday.City Bearings
Found the component i was looking for ad a great price. Great support from the staff as I was paying using a wire transfer. - Quick delivery and very good packaging.Adriano Tiberi
After ordering an urgent part from Marvo i received a great level of customer service and Rob was very helpful.Claire Hinchliff
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