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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.
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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.
