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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3TH2040-0BB4 |
| Alternative Part Number | 3TH20400BB4 |
| Manufacturer | Siemens |
| Product Type | Contactor Relay |
| Number of Contacts | 4 Normally Open (NO) |
| Voltage Type | DC |
| Control Supply Voltage | 24 V DC |
| Operating Current at AC-15 | 4 A at 230 V, 3 A at 400 V |
| Size of Contactor | 0 |
| Protection Class IP | IP20 |
| 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 68 mm |
| Connection Type | Screw-type terminals |
| Ambient Operating Temperature | -25 to +55 °C |
| Reference Code | According to IEC 81346-2: K |
| B10 Value | 400,000 operations at 0.3 x Ie |
| T1 Value | 20 years (proof test interval or service life according to IEC 61508) |
The Siemens 3TH2040-0BB4 is a high-quality contactor relay designed for a variety of industrial applications. This robust component is engineered to facilitate reliable switching of control signals within electrical circuits. With a compact size 0 form factor, it is suitable for space-conscious installations.
Crafted to operate at a control supply voltage of 24 V DC, the 3TH2040-0BB4 ensures consistent performance in a range of environments, with an operational temperature range of -25 to +55 °C. It features four normally open (NO) contacts, making it a versatile choice for many control circuit arrangements.
The device is housed in a sturdy enclosure with an IP20 protection class on the front, safeguarding the internal components from solid objects and ensuring a long service life. The contactor relay is designed for easy installation, with screw and snap-on mounting options onto a 35 mm standard mounting rail according to DIN EN 50022.
With a focus on safety, the 3TH2040-0BB4 is finger-safe, providing protection against electrical shock during handling and operation. It is a reliable choice for those seeking a durable and efficient solution for their control systems.
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Frequently Asked Questions
What type of device is the Siemens Contactor Relay?
The Siemens Contactor Relay is an auxiliary contactor designed for controlling, switching, and signalling circuits within industrial applications. It features 4 normally open (NO) contacts and operates with a DC control supply voltage.
Can this contactor relay be mounted on a DIN rail?
Yes, the Siemens Contactor Relay is designed for screw and snap-on mounting onto a 35 mm standard mounting rail according to DIN EN 50022, which makes it suitable for DIN rail installations.
What is the protection class of the front side of the contactor relay?
The front side of the contactor relay is rated at IP20, providing protection against solid objects larger than 12.5 mm but not against water.
What is the ambient operating temperature range for this contactor relay?
The ambient operating temperature range for the contactor relay is between -25°C and +55°C, making it suitable for a variety of industrial environments.
What is the control supply voltage required for this contactor relay?
The control supply voltage required for the contactor relay is 24 V DC, which is the rated value for its operation.
What are the dimensions of the contactor relay?
The contactor relay has dimensions of 48 mm in height, 45 mm in width, and 68 mm in depth.
What type of electrical connection does the contactor relay use for its auxiliary and control current circuit?
The contactor relay uses screw-type terminals for its electrical connections, providing a secure and reliable connection for auxiliary and control current circuits.
What is the B10 value for this contactor relay and what does it signify?
The B10 value for the contactor relay is 400,000 at 0.3 times the rated operational current (Ie), which indicates the number of operations before 10% of components typically fail under a high demand rate.
What is the T1 value for the proof test interval or service life according to IEC 61508?
The T1 value for the proof test interval or service life according to IEC 61508 is 20 years, indicating the designed duration for reliable operation before a proof test or replacement is recommended.
How can I ensure protection against electrical shock when using this contactor relay?
The contactor relay is designed with finger-safe terminals to provide protection against direct contact with electrical parts, reducing the risk of electrical shock during installation or maintenance.
