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3TH2271-0BB4
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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3TH2271-0BB4 |
| Alternative Part Number | 3TH22710BB4 |
| Manufacturer | Siemens |
| Mounting Type | Screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022 |
| Width | 45 mm |
| Height | 48 mm |
| Depth | 96 mm |
| Protection Class IP / Front | IP20 |
| Ambient Operating Temperature | -25 … +55 °C |
| Voltage Type / Control Feed | DC |
| Control Supply Voltage / Rated | 24 V DC |
| Operating Current at AC-15 | 4 A at 230 V, 3 A at 400 V |
| Number of NC Contacts | 1 |
| Number of NO Contacts | 7 |
| Connection Type | Screw-type terminals |
| B10 Value / High Demand Rate | 400,000 (With 0.3 x Ie) |
| T1 Value / Proof Test Interval | 20 years according to IEC 61508 |
| Protection Against Electric Shock | Finger-safe |
The Siemens 3TH2271-0BB4 is a robust and reliable contactor relay designed to meet the demands of various industrial applications. This component is engineered to facilitate the control of electrical circuits, providing both flexibility and efficiency in system design. With a compact form factor, it features a width of 45mm, a height of 48mm, and a depth of 96mm, making it suitable for installation in space-constrained environments.
Constructed with a focus on durability, the 3TH2271-0BB4 operates within an ambient temperature range of -25°C to +55°C and boasts a protection class of IP20 on the front, ensuring it is safeguarded against the ingress of solid objects. The contactor relay is designed for DC operation with a control supply voltage rated at 24V DC, which is a common standard in industrial settings.
The device includes seven normally open (NO) contacts and one normally closed (NC) contact for auxiliary purposes, providing ample switching capabilities for various configurations. The screw-type terminals offer a secure and reliable connection for both auxiliary and control current circuits, ensuring stable and consistent performance.
With a B10 value of 400,000 at a high demand rate and a T1 value of 20 years for the proof test interval or service life, the 3TH2271-0BB4 is built to last, reducing the need for frequent replacements and maintenance. Its finger-safe design also enhances the safety aspect during installation and operation.
The Siemens 3TH2271-0BB4 is a versatile component suitable for a wide range of applications, including but not limited to, automation systems, control panels, and machinery that require precise and dependable switching operations. Its technical specifications and build quality make it a valuable addition to any industrial control system.
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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 designated as size 0.
What is the ambient operating temperature range for this device?
The ambient operating temperature range for this contactor relay is between -25°C and +55°C.
What type of protection class does the front of the contactor relay have?
The front of the contactor relay has a protection class of IP20.
What is the control supply voltage for this device?
The control supply voltage for this device is rated at 24V DC.
How many auxiliary contacts does this contactor relay have?
This contactor relay has 7 normally open (NO) contacts and 1 normally closed (NC) contact for auxiliary purposes.
What are the dimensions of this contactor relay?
The dimensions of the contactor relay are 45mm in width, 48mm in height, and 96mm in depth.
What type of mounting is suitable for this contactor relay?
This contactor relay is suitable for screw and snap-on mounting onto a 35mm standard mounting rail according to DIN EN 50022.
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 at 0.3 times the rated operating current (Ie).
What is the T1 value related to the proof test interval or service life?
The T1 value for the proof test interval or service life, according to IEC 61508, is 20 years.
Is the contactor relay protected against electrical shock?
Yes, the contactor relay is designed to be finger-safe, providing protection against electrical shock.
