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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3TH2244-0BB4 |
| Alternative Part Number | 3TH22440BB4 |
| Manufacturer | Siemens |
| Product Type | Contactor Relay |
| Contact Configuration | 4NO/4NC (4 Normally Open, 4 Normally Closed) |
| Rated Control Supply Voltage | 24 V DC |
| Operating Current at AC-15 | 4 A at 230 V, 3 A at 400 V |
| Mounting Type | Screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022 |
| Dimensions (Height x Width x Depth) | 48 mm x 45 mm x 96 mm |
| Electrical Connection | Screw-type terminals |
| Protection Class | IP20 |
| Reference Code | K (acc. to DIN 40719 extended according to IEC 204-2 acc. to IEC 750) |
| B10 Value | 400,000 operations with 0.3 x Ie (rated operational current) |
| T1 Value | 20 years (proof test interval or service life acc. to IEC 61508) |
| Protection Against Electrical Shock | Finger-safe |
| Product Designation | Auxiliary contactor |
| Size of Contactor | 0 |
| Identification Number and Letter | 44 E |
The Siemens 3TH2244-0BB4 is a robust contactor relay designed for a wide range of industrial applications. This component is engineered to facilitate reliable switching of auxiliary circuits and control signals within electrical systems. With a configuration of 4 normally open (NO) and 4 normally closed (NC) contacts, it offers versatility for complex circuit designs.
Featuring a control supply voltage of 24 V DC, the 3TH2244-0BB4 is suitable for DC operation and comes with a screw terminal connection for secure and straightforward installation. The compact dimensions, with a width of 45 mm, allow for efficient use of space inside control cabinets.
This contactor relay is built to the EN 50011 standard, ensuring compatibility with European installations, and is rated for operating currents of 4 A at 230 V in AC-15 usage, and 3 A at 400 V, making it a practical choice for a variety of control tasks. The device is also finger-safe, providing protection against electrical shock and enhancing safety during handling and operation.
Mounting is made easy with options for both screw and snap-on mounting onto a 35 mm standard mounting rail according to DIN EN 50022. The 3TH2244-0BB4 is a discontinued product, and its successor is the SIRIUS 3RH21 series, which continues Siemens' tradition of innovation and reliability in contactor technology.
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Frequently Asked Questions
What is the control supply voltage for this contactor relay?
The control supply voltage for this contactor relay is rated at 24 V DC.
Can you describe the mounting type for this device?
The device can be mounted using screws and can also be snapped onto a 35 mm standard mounting rail according to DIN EN 50022.
What are the dimensions of this contactor relay?
The dimensions of the contactor relay are 48 mm in height, 45 mm in width, and 96 mm in depth.
What type of electrical connection does this contactor relay have?
This contactor relay features screw-type terminals for auxiliary and control current circuits.
What is the operating current of this contactor relay at AC-15?
At AC-15, the operating current is 4 A at 230 V and 3 A at 400 V.
What is the protection class for the front of this contactor relay?
The protection class for the front of this contactor relay is IP20, providing protection against solid objects larger than 12.5 mm but not against water.
How many NO and NC contacts does this contactor relay have?
The contactor relay has 4 Normally Open (NO) and 4 Normally Closed (NC) contacts.
What is the B10 value for this contactor relay?
The B10 value for this contactor relay, with a high demand rate according to SN 31920, is 400,000 operations at 0.3 times the rated operational current (Ie).
What is the T1 value for proof test interval or service life according to IEC 61508?
The T1 value for proof test interval or service life according to IEC 61508 is 20 years.
Is the contactor relay finger-safe?
Yes, the contactor relay is designed to be finger-safe, providing protection against electrical shock.
