SIEMENS 3TF2010-0BB4 Output module

Siemens 3TF2010-0BB4 Contactor Overview

The Siemens 3TF2010-0BB4 is a 3-pole contactor from the now phased-out 3TF series, designed for switching and controlling AC loads, particularly squirrel cage and slip-ring motors. It features screw terminals and includes an auxiliary switch.

Product Detailed Description

• Function:

• Primarily used for making and breaking electrical circuits remotely.

• Suitable for frequent starting and stopping of AC motors.

• Can also be used for switching other AC loads such as solenoids, capacitors, lighting, heating, and transformer loads.

• Features:

• 3-pole: Designed for three-phase applications.

• Size 00: Indicates its compact physical size.

• Screw terminals: For secure electrical connections on both main and auxiliary circuits.

• Integrated auxiliary switch 1 NO (Normally Open): Provides an additional contact for control or signaling purposes.

• DC operation: The control voltage for the coil is 24 V DC.

• Robust construction: Known for reliability and durability in industrial environments.

• Mounting: Designed for screw and snap-on mounting onto 35 mm standard DIN rails (according to DIN EN 50022). Side-by-side mounting is possible.

Product Parameters

• Article Number (MLFB): 3TF2010-0BB4

• Type of Contactor: 3-pole

• Main Contacts Configuration: 3 NO (Normally Open)

• Auxiliary Contacts: 1 NO (instantaneous contact)

• Control Supply Voltage: 24 V DC (rated value)

• Operating Current (AC-3):

• At 400 V rated value: 9 A

• Operating Current (AC-4):

• At 400 V rated value: 2.6 A

• Operating Power (AC-3):

• At 400 V rated value: 4 kW

• Operating Power (AC-1):

• At 400 V rated value: 10 kW

• Dimensions:

• Height: 48 mm

• Width: 45 mm

• Depth: 68 mm

• Net Weight: 0.220 kg

• Electrical Connection Type: Screw-type terminals for both main and auxiliary/control current circuits.

• Compliance: Conforms to standards like IS/IEC 60947-4-1. Carries the CE mark. RoHS compliant since 2006.07.01.

• Product Lifecycle: Phased-out product (PM500: Discontinued Product or end of PLM & Support) since June 1, 2023. Successor is the SIRIUS series.

Product Advantages

• Reliability: As part of the Siemens 3TF series, it was a tried and tested solution known for its reliability in motor control applications.

• Compact Size: Size 00 design allows for space-saving installation in control panels.

• Integrated Auxiliary Contact: Provides a convenient additional NO contact for control circuits without needing an external add-on block.

• DC Coil Operation: Suitable for control systems utilizing 24 V DC, which is common in many industrial applications.

• Ease of Installation: Screw terminals and DIN rail mounting simplify wiring and setup.

• Robust Construction: Designed to withstand typical industrial operating conditions.

Precautions

• Phased-out Product: The most critical precaution is that this product has been discontinued since June 1, 2023. Sourcing new units may be difficult, and long-term support might be limited. For new designs or replacements, the Siemens SIRIUS series is the recommended successor.

• Correct Sizing: Ensure the contactor's current and power ratings (especially AC-3 for motor loads) are appropriate for the specific motor or load being controlled.

• Correct Control Voltage: Verify that the control supply voltage is precisely 24 V DC, as incorrect voltage can damage the coil.

• Proper Wiring: Follow the wiring diagrams carefully, ensuring all connections are secure to prevent loose contacts, overheating, or malfunction.

• Overload Protection: A contactor primarily switches loads; it does not provide overload protection for the motor. An appropriate thermal overload relay (e.g., Siemens 3UA series) or motor protection circuit breaker should always be used in conjunction with the contactor to protect the motor from overloads and phase failures.

• Environmental Conditions: Ensure the operating environment's temperature and humidity are within the specified limits.

• Safety: Always disconnect power before installing, inspecting, or maintaining the contactor.

Product Applications

The Siemens 3TF2010-0BB4 contactor, before its discontinuation, was typically used in applications requiring switching and control of:

• Squirrel Cage Motors: For starting, stopping, and frequently switching small to medium-sized three-phase AC motors.

• Slip-Ring Motors: Similar to squirrel cage motors, but often with more nuanced control requirements.

• Other AC Loads:

• Solenoids

• Capacitors

• Lighting loads

• Heating loads

• Transformer loads

• Industrial Control Panels: As part of motor starter combinations (with overload relays) in various machinery and systems.

• Building Automation: For switching heating elements, fans, and other building electrical loads.

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