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Siemens 6NH9821-0BC11

Name: 6NH9821-0BC11
Brand: Siemens
SKU: 6NH9821-0BC11
Price: 152.2 GBP
Availability: InStock

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Marvo Stock ID MV-3K69

HS Code 85369095

SKU 6NH9821-0BC11

Condition Refurbished

Warranty 12 months

EAN 4019169403290

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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	6NH9821-0BC11
Alternative Part Number	6NH98210BC11
Manufacturer	Siemens
Transmission Paths	Private unspooled or spooled long-distance lines
Transformation Ratio	1:1; +5% (e.g., 600/600 Ohm in the voice band)
Transmission Range	300 Hz to 35 kHz
Attenuation	Dependent on frequency and transmission speed
Isolation Resistance	> 2000 MOhm
Test Voltage	4 kV, 50 Hz, 10 sec
Surge Voltage Resistance	6 kV/2 J according to EN 60 099-1
Nominal Discharge Surge Current	5 kA
Output Voltage Limitation	Approx. 15 V at nominal discharge surge current
Long-Distance Line Connection	Screw terminals X1 for rigid and flexible wires
Modem Connection	Screw terminals X2 and X3 or X6 (RJ12 socket for Western plug)
Installation Location	Preferably close to the cable entry into the building
Dimensions (H x W x D)	90 x 75 x 110 mm
Weight	LTOP1: 300 g, LTOP2: 320 g, OPM: 10 g
Protection Class	IP20
Mounting	DIN rail TS35 (35 mm; EN 50 022)

The Siemens 6NH9821-0BC11 is a sophisticated line transformer with integrated overvoltage protection, designed to safeguard telecontrol communication networks. This essential component is adept at suppressing voltage surges, ensuring they remain at levels that are non-detrimental to sensitive electronic equipment. The device features a floating transformer that provides electrical isolation, which is crucial in preventing potential carry-over onto other sections of the line.

Engineered for reliability, the Siemens 6NH9821-0BC11 is an indispensable protective element for private telecontrol networks. It is equipped with a plug-in overvoltage protection module (OPM) that can be easily replaced without interrupting the telecontrol line, thus minimising downtime and maintenance efforts. The unit's design includes overvoltage suppressors, inductors, a metal oxide varistor, and a suppressor diode, all working in concert to provide comprehensive protection.

The device's versatility is evident in its ability to be used in various configurations, whether in single or dual unit arrangements within its housing. It is compatible with a range of modem connections and can be installed near the cable entry point of a building, making it a flexible solution for a variety of industrial settings.

With its robust construction and IP20 protection rating, the Siemens 6NH9821-0BC11 is built to withstand the rigours of industrial environments while providing a high level of protection against electrical disturbances. This line transformer with overvoltage protection is a testament to Siemens' commitment to quality and innovation in industrial automation and control.

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.

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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 purpose of the Siemens Line Transformer with Overvoltage Protection?

The Siemens Line Transformer with Overvoltage Protection is designed to interface telecontrol equipment to a telecontrol line, providing electrical isolation and protection against voltage surges. This ensures reliable communication and extends the lifespan of the connected devices.

Can this line transformer be used for both 2-wire and 4-wire modem connections?

Yes, the line transformer is versatile and can be used for both 2-wire and 4-wire modem connections, making it suitable for a variety of telecontrol applications.

Is there any configuration required for the line transformer upon installation?

The line transformer comes with adjustment switches that may need to be configured based on the specific application and connection requirements. It is important to refer to the installation manual for proper setup.

What type of protection does the overvoltage module provide?

The overvoltage module provides protection against transient voltage spikes and surges, which can occur due to lightning strikes or power fluctuations, thereby safeguarding the telecontrol equipment.

How can multiple line transformers be integrated into a telecontrol system?

Multiple line transformers can be connected together if necessary for larger telecontrol systems. This allows for flexible and scalable configurations to meet the needs of various network sizes and complexities.

What are the typical applications for this line transformer?

Typical applications include industrial telecontrol systems, remote monitoring and control networks, and any other scenarios where telecommunication lines interface with control equipment requiring isolation and surge protection.

How does the line transformer connect to SINAUT ST7 modems?

The line transformer can be directly connected to SINAUT ST7 modems using the standard cross-connection cable supplied with the modems, which features RJ12 Western connectors for easy installation.

What are the physical characteristics of the line transformer?

The line transformer has a compact design suitable for DIN rail mounting, with dimensions of 90 x 75 x 110 mm and a weight of 300 g for the single module version (6NH9821-0BC11) and 320 g for the dual module version.

Does the line transformer require any special environmental conditions for operation?

The line transformer is designed to operate within standard industrial environmental conditions. However, it should be installed in a location that minimizes exposure to extreme temperatures, moisture, and mechanical stress.

What maintenance is required for the line transformer?

The line transformer is designed to be low-maintenance. However, it is recommended to periodically check the connections and the state of the overvoltage protection modules to ensure ongoing reliability and protection.

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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