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Pepperl + Fuchs Z728

Name: Z728
Brand: Pepperl + Fuchs
SKU: Z728
Price: 71.13 GBP
Availability: InStock

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£71.13 (ex. VAT)

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Marvo Stock ID MV-2BNN

HS Code 85363000

SKU Z728

Condition Used

Warranty 12 months

Weight (kg) 0.15

Length (mm) 110.00

Width (mm) 12.50

Height (mm) 115.00

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Specification & Description

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Commonly Asked Questions

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Customer Reviews

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Specification & Description

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.

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.

Commonly Asked Questions

Is my order covered by a warranty?

Marvo provides a full 12-month warranty on all products, whatever the condition. For your peace of mind, all parts are ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. If you are unhappy with the part(s) you received and would like to request a return, you can do so by completing our quick and easy online form. Once we have received your Returns Request, a member of the team will be in touch to discuss this further with you. You can read more about our warranty policy here.

What payment methods do you accept?

We accept card payments from all major credit, debit and Mastercard providers including Visa, American Express, Western Union, Paypal and bank transfers. Before you complete an order you will be prompted to input your payment details, at which point you can enter the relevant card information you wish to use for your transaction. If you are experiencing issues with your payment method then you can contact our team via email here. From there, you will be directed to the most relevant resource or person to help you complete your payment, get your order processed and ensure that your parts are on the way to your delivery address.

Is Marvo a credible parts supplier?

Marvo is a highly credible supplier of industrial automation parts and components with dedicated hubs around the world offering industry-leading products and services. Marvo is committed to providing a quick, easy and reliable place to source your automation and control components. All purchases come as standard with a comprehensive 12-month return to base warranty meaning that, in just a few clicks, you can source critical parts more seamlessly than ever before. Click here to read an article on how Marvo is redefining convenience for automation and manufacturing professionals.

Have steps been taken to ensure quality control?

Marvo takes pride in product quality and has put several measures in place to assure high levels of quality standards. For your peace of mind, all parts have been ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. Redefine convenience and secure priority delivery on all parts along with a comprehensive 12-month warranty. This is the smart new way to buy automation and control components.

How do I create an account?

Creating an account is incredibly simple and takes a matter of seconds. You can create a Marvo account at any time by clicking here and following the simple steps on screen. By creating a Marvo account you can store your contact details, delivery addresses, billing addresses and more, meaning that you can enjoy game-changing convenience faster than ever before.

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Our service to you

Lightning-Fast Express Shipping: Receive your order in record time with our express shipping options, ensuring you minimize downtime and keep your projects on track.

No-Risk Returns, Guaranteed: Return your parts anytime for a full refund. Our hassle-free return policy ensures you’re never stuck with something you don’t need.

Clear Pricing with No Hidden Fees: What you see is what you pay, transparent pricing with no extra costs, ever. Rest assured, all taxes and fees are already included in your final price.

Rock-Solid Reliability at a Fraction of the Cost: Get pre-owned electronic parts that are fully tested for peak performance, saving you money without compromising on quality, backed by a comprehensive warranty.

Frequently Asked Questions

What is the function of a Zener Barrier?

A Zener Barrier is designed to limit the energy that can be transferred from a safe area to a hazardous area, thereby preventing the ignition of flammable gases or dust in the hazardous area. It achieves this by using Zener diodes to clamp the voltage and a fuse to disconnect the circuit in the event of an overvoltage.

Can the Zener Barrier be used in explosive atmospheres?

Yes, the Zener Barrier is suitable for use in potentially explosive atmospheres and is certified with ATEX and IECEx approvals, making it appropriate for Zones 0, 1, and 2 for gas and dust hazards.

What are the electrical specifications of this Zener Barrier?

The Zener Barrier has a nominal resistance of 240 to 300 ohms, a series resistance of up to 341 ohms, and a fuse rating of 50 to 80 mA. It is designed to work with a voltage of 26.5 V at 10 µA leakage current.

How is the Zener Barrier mounted?

The Zener Barrier is designed for mounting on a 35 mm DIN rail according to EN 60715:2001, which allows for easy installation and maintenance in control panels and equipment racks.

What are the ambient operating conditions for the Zener Barrier?

The Zener Barrier can operate in ambient temperatures ranging from -20 to 60 °C (-4 to 140 °F) and should be stored in temperatures from -25 to 70 °C (-13 to 158 °F). It is designed to function at a relative humidity of up to 75%, without moisture condensation.

What type of connections does the Zener Barrier support?

The Zener Barrier supports screw terminal connections with a maximum core cross-section of 2 x 2.5 mm², allowing for secure and reliable wiring to both the hazardous and safe area terminals.

What is the degree of protection provided by the Zener Barrier?

The Zener Barrier provides a degree of protection of IP20, which means it is protected against solid objects larger than 12.5 mm but is not protected against water ingress.

Is there any special certification for the Zener Barrier?

Yes, the Zener Barrier comes with EC-Type Examination Certificates and complies with various directives and standards such as EN 60079-0:2012, EN 60079-11:2012, and EN 60079-15:2010, ensuring its suitability for use in hazardous areas.

What are the dimensions and weight of the Zener Barrier?

The Zener Barrier has dimensions of approximately 12.5 x 115 x 110 mm (0.5 x 4.5 x 4.3 in) and weighs around 150 grams, making it compact and lightweight for its function.

Does the Zener Barrier have any replaceable components?

Some versions of the Zener Barrier come with a replaceable fuse feature, which allows for easy maintenance and replacement in case of a fault without the need to replace the entire unit.

Part conditions explained

We want your buying experience to be as seamless as possible. So, here are all of the product descriptions you will see when browsing Marvo, explained a little further:

New unsealed: The product is in its original packaging, but the packaging has been opened or unsealed. It has never been used and should be in near pristine condition.

New sealed: The product is sealed in its original packaging. It has never been opened or used, ensuring that it's in an untouched state.

New unboxed: The product does not come in its original packaging, but it has never been used and is in great working condition.

Refurbished: The product has been previously used, but it has undergone a thorough refurbishment process to restore it to a like-new or functional condition. Any defects or issues have been addressed, making it suitable for reuse.

Used: The product has been previously owned and has been used. It may show signs of wear and tear but is still functional and operational. The condition may vary depending on the specific item and its usage history.

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