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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3TH4391-0BB4 |
| Alternative Part Number | 3TH43910BB4 |
| Manufacturer | Siemens |
| Product Type | Contactor Relay |
| Contact Configuration | 1NC (Normally Closed) / 9NO (Normally Open) |
| Rated Operational Current | 6 A |
| Control Supply Voltage | 24 V DC |
| Size of Contactor | 0 |
| Ambient Operating Temperature | -25 … +55 °C |
| Protection Class IP | IP20 |
| 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 135 mm |
| Connection Type | Screw-type terminals |
| B10 Value | 1,000,000 (with 0.3 x Ie) |
| T1 Value for Proof Test Interval or Service Life | 20 years according to IEC 61508 |
| Reference Code | K (acc. to DIN 40719 extended according to IEC 204-2 / IEC 750, DIN EN 61346-2, DIN EN 81346-2) |
| Protection Against Electrical Shock | Finger-safe |
| Commodity Code | 853649 |
The Siemens 3TH4391-0BB4 is a high-quality contactor relay designed for a variety of industrial applications. This component is engineered to facilitate reliable switching of control signals within electrical circuits. It features a configuration of 1 normally closed (NC) and 9 normally open (NO) contacts, making it versatile for complex control systems.
With a control supply voltage of 24 V DC, it is suitable for DC operation and integrates seamlessly into systems requiring a DC solenoid system. The contactor relay is built to withstand an ambient operating temperature range of -25 to +55 degrees Celsius, ensuring performance stability in diverse working environments.
The compact size of the contactor, classified as size 0, allows for efficient use of space within electrical cabinets. It also boasts a protection class of IP20 on the front, providing a basic level of protection against solid objects.
For ease of installation, the 3TH4391-0BB4 is designed with screw terminals and can be mounted using screw and snap-on methods onto a 35 mm standard mounting rail according to DIN EN 50022. Its dimensions are 78 mm in height, 55 mm in width, and 135 mm in depth, which are standard dimensions for contactors of this type.
This contactor relay is not only robust but also designed for longevity, with a B10 value indicating a high demand rate and a T1 value for proof test interval or service life according to IEC 61508.
The Siemens 3TH4391-0BB4 is an essential component for professionals looking to maintain or enhance the efficiency and reliability of their control systems. It is a testament to Siemens' commitment to quality and innovation in the field of industrial control technology.
Commonly Asked Questions
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Frequently Asked Questions
What type of device is this Siemens contactor relay?
The Siemens contactor relay is an auxiliary contactor designed for various control applications. It features 9 normally open (NO) and 1 normally closed (NC) contacts, suitable for DC operation.
Can this contactor relay be used in safety-related applications?
Yes, this contactor relay can be used in safety-related applications. It has a B10 value with a high demand rate according to SN 31920 and a T1 value for proof test interval or service life according to IEC 61508.
What is the control supply voltage for this contactor relay?
The control supply voltage for this contactor relay is rated at 24 V DC.
What are the dimensions of this contactor relay?
The dimensions of the contactor relay are 78 mm in height, 55 mm in width, and 135 mm in depth.
What is the operating current rating for this contactor relay at AC-15?
The operating current rating for this contactor relay at AC-15 is 10 A at 230 V and 6 A at 400 V.
What type of terminals does this contactor relay have for electrical connections?
This contactor relay is equipped with screw-type terminals for its auxiliary and control current circuits.
What is the protection class for the front of this contactor relay?
The protection class for the front of this contactor relay is IP20, indicating a basic level of protection against solid objects.
How can this contactor relay be mounted?
This contactor relay can be mounted using screw and snap-on mounting onto a 35 mm standard mounting rail according to DIN EN 50022.
What is the ambient operating temperature range for this contactor relay?
The ambient operating temperature range for this contactor relay is between -25°C and +55°C.
Is the contactor relay finger-safe?
Yes, the contactor relay is designed to be finger-safe, providing protection against electrical shock during handling and operation.
