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Siemens

3TH4373-0AP0

£74.51 (ex. VAT)

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Marvo Stock ID MV-7J0J
HS Code 85364900
SKU 3TH4373-0AP0
Condition New unboxed
Warranty 12 months
Weight (kg) 0.20
Length (mm) 102.00
Width (mm) 55.00
Height (mm) 78.00
EAN 4011209049543

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Specification & Description

Specification Description
Part Number 3TH4373-0AP0
Alternative Part Number 3TH43730AP0
Manufacturer Siemens
Product Designation Auxiliary Contactor
Contactor Size 0
Number of Contacts 7 Normally Open (NO), 3 Normally Closed (NC)
Terminal Type Screw Terminals
Operating Voltage AC 230/220V 50Hz, AC 276/264V 60Hz
Ambient Operating Temperature -25 to +55 °C
Protection Class IP20 on the front
Reference Code K (according to DIN EN 61346-2)
Control Supply Voltage Frequency 50 Hz / 60 Hz
Operating Current at AC-15 10 A at 230 V, 6 A at 400 V
Mounting Type Screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022
Dimensions (Width x Height x Depth) 55 mm x 78 mm x 102 mm
Protection Against Electrical Shock Finger-safe
B10 Value 1,000,000 operations with high demand rate (with 0.3 x Ie)
T1 Value 20 years for proof test interval or service life (according to IEC 61508)
Approvals General Product Approval, Functional Safety / Safety of Machinery, Type Examination

The Siemens 3TH4373-0AP0 is a high-quality contactor relay designed to facilitate the control of electrical circuits within a wide range of industrial applications. This component is part of the 3TH4 series and is engineered to meet the rigorous demands of modern automation systems.

Featuring a configuration of 7 normally open (NO) and 3 normally closed (NC) contacts, the 3TH4373-0AP0 offers versatility in integrating with various control schemes. The screw terminals provide a secure and reliable connection, ensuring stable operation and ease of installation.

Constructed to operate with an AC control supply voltage of 230V at 50Hz or 277V at 60Hz, this contactor relay is suitable for use in regions with different power supply standards. The device is designed to function optimally within an ambient temperature range of -25 to +55 degrees Celsius, making it robust enough for challenging environmental conditions.

The compact size of the contactor, with dimensions of 55mm in width, 78mm in height, and 102mm in depth, allows for efficient use of space inside control cabinets. Additionally, it can be easily mounted onto a 35mm standard mounting rail according to DIN EN 50022, which is a common feature in electrical installations.

The 3TH4373-0AP0 is rated for operating currents of 10A at 230V and 6A at 400V under AC-15 utilization category, which indicates its suitability for controlling electromagnets in the specified current ranges. The protection class IP20 ensures that the contactor relay is safeguarded against solid objects larger than 12mm, adding a layer of protection for the internal components.

This Siemens contactor relay is a reliable choice for professionals seeking a durable and efficient solution for controlling electrical circuits in industrial environments.

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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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.

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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.

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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 size of the contactor for this part?

The contactor size for this Siemens contactor relay is size 0, which is a standard size classification for this type of component.

What is the protection class IP rating on the front of this contactor relay?

The protection class IP rating on the front of this contactor relay is IP20, indicating a basic level of protection against solid objects.

What are the ambient operating temperature limits for this contactor relay?

The ambient operating temperature range for this contactor relay is between -25°C and +55°C.

What type of control supply voltage is required for this contactor relay?

This contactor relay requires an AC control supply voltage.

What are the rated control supply voltage values for this contactor relay at 50 Hz and 60 Hz?

At 50 Hz, the rated control supply voltage value is 230 V AC, and at 60 Hz, it is 277 V AC.

How many normally closed (NC) and normally open (NO) contacts does this contactor relay have?

This contactor relay has 3 normally closed (NC) contacts and 7 normally open (NO) contacts.

What are the operating current ratings for this contactor relay at AC-15?

The operating current ratings at AC-15 are 10 A at 230 V and 6 A at 400 V.

What is the mounting type for this contactor relay?

The mounting type for this contactor relay is screw and snap-on mounting onto a 35 mm standard mounting rail according to DIN EN 50022.

What are the dimensions of this contactor relay?

The dimensions of this contactor relay are 55 mm in width, 78 mm in height, and 102 mm in depth.

What is the B10 value and T1 value for this contactor relay?

The B10 value with a high demand rate according to SN 31920 is 1,000,000 with 0.3 x Ie, and the T1 value for proof test interval or service life according to IEC 61508 is 20 years.

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Part conditions explained


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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.