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Siemens 3UF1856-3DA00

Name: 3UF1856-3DA00
Brand: Siemens
SKU: 3UF1856-3DA00
Price: 114.78 GBP
Availability: InStock

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Marvo Stock ID MV-7JRD

HS Code 85043180

SKU 3UF1856-3DA00

Condition Used

Warranty 12 months

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Specification & Description

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Commonly Asked Questions

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Specification & Description

Specification	Description
Part Number	3UF1856-3DA00
Alternative Part Number	3UF18563DA00
Manufacturer	Siemens
Product Designation	Current transformer for overload protection
Current at Input (Min)	100 A
Current at Input (Max)	400 A
Secondary Side Current (Max)	1 A
Ratio Input Current/Output Current	400/1 A
Apparent Loss Power (Max)	7 VA
Apparent Loss Power (Min)	0.5 VA
Number of Poles	3
Reference Code	T (according to DIN 40719 extended according to IEC 204-2 / according to IEC 750)
Electrical Connection (Secondary)	Screw-type terminals
Electrical Connection (Input)	Flat connector
Mounting Type	Screw mounting for mounting on contactors and standalone installations
Width	145 mm
Height	159 mm
Depth	127 mm
Protection Class	IP20
Ambient Operating Temperature Range	-25 … +60 °C
Certificates/Approvals	General Product Approval for use in hazardous locations, Declaration of Conformity, and other
Last Change	Mar 17, 2014

The Siemens 3UF1856-3DA00 is a high-precision current transformer designed for three-phase monitoring and overload protection applications. This robust component is engineered to be mounted onto a contactor and can be installed as a single unit, ensuring a streamlined integration into various industrial systems. With an input current range of 100A to 400A and a secondary side maximum of 1A, it offers a ratio of input current to output current of 400/1 A, making it suitable for a wide range of operational demands.

The transformer is characterised by its minimal apparent loss power, ranging from a mere 0.5 VA to a maximum of 7 VA, which highlights its efficiency in energy usage. It features a three-pole design and adheres to the DIN 40719, IEC 204-2, and IEC 750 standards for reference codes, as well as the DIN EN 61346-2 standard. The mechanical design includes screw-type terminals for the secondary side and flat connectors for the input, facilitating a secure and reliable electrical connection.

Designed for screw mounting, the Siemens 3UF1856-3DA00 is versatile for both mounting on contactors and standalone installations. Its compact dimensions, with a width of 145 mm, height of 159 mm, and depth of 127 mm, along with a protection class of IP20, make it suitable for a variety of industrial environments. The transformer can operate within an ambient temperature range of -25°C to +60°C, ensuring reliable performance under diverse operating conditions.

This current transformer is a testament to Siemens' commitment to quality and reliability, making it an essential component for industrial control systems that require precise current measurement and protection.

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.

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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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Frequently Asked Questions

What is the primary use of this current transformer?

This current transformer is designed for overload protection in electrical circuits. It's typically used in conjunction with contactors for monitoring and managing the current flow in three-phase power systems.

Can this transformer be mounted onto any contactor?

It is specifically designed for mounting onto contactors and can be installed as a single unit, but it's important to ensure compatibility with the contactor in use. It's advisable to check the specifications of both the contactor and the transformer for a proper fit.

What is the current transformation ratio of this device?

The current transformation ratio of the 3UF1856-3DA00 is 400/1 A, meaning it can transform a primary current of up to 400 A into a secondary current of 1 A.

What are the ambient operating temperature limits for this transformer?

The transformer can operate within an ambient temperature range of -25°C to +60°C, making it suitable for a variety of industrial environments.

What type of electrical connections does this transformer support?

On the secondary side, it features screw-type terminals for secure connections, while the input side is designed for flat connector use.

What is the protection class of this current transformer?

The protection class for this current transformer is IP20, indicating that it has protection against solid objects larger than 12.5 mm but not against water.

How many poles does this current transformer have?

This current transformer has three poles, aligning with its use in three-phase electrical systems.

What are the dimensions of this current transformer?

The dimensions are 145 mm in width, 159 mm in height, and 127 mm in depth, which should be considered when planning for installation space.

Does this current transformer have any certifications or approvals?

Yes, it has general product approvals for use in hazardous locations, along with other declarations of conformity.

What is the apparent loss power range for this transformer?

The apparent loss power for this transformer ranges from a minimum of 0.5 VA to a maximum of 7 VA.

Part conditions explained

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