3RT1035-1BB44

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The Siemens 3RT1035-1BB44 is a robust power contactor designed to handle a variety of applications within industrial environments. This three-pole contactor is rated for AC-3 40 A and can manage motor power of up to 18.5 kW at 400 V ac, making it suitable for a wide range of motor control tasks. It operates with a 24 V DC control circuit and features a screw connection for secure and reliable installation.

Constructed with durability in mind, the 3RT1035-1BB44 boasts an impressive mechanical operating life, capable of up to 10 million cycles, ensuring long-term performance and reliability. The contactor is part of the SIRIUS product family, which is known for its high-quality standards and compatibility with a wide range of control systems.

The device is equipped with 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts, providing flexibility for complex control circuits. With an insulation voltage rated at 690 V and a surge voltage resistance of 6 kV, it is designed to withstand challenging electrical environments.

The contactor's compact size S2 form factor makes it an excellent choice for space-constrained applications, while its IP20 protection class rating on the front ensures protection against solid objects. It is designed to operate reliably in a broad range of ambient temperatures, from -25 to +60 degrees Celsius, and at installation altitudes of up to 2000 metres above sea level, catering to various industrial settings.

The Siemens 3RT1035-1BB44 is a testament to Siemens' commitment to quality, offering a dependable solution for controlling motors and loads efficiently and effectively in industrial applications.
Specification Description
Part Number 3RT1035-1BB44
Alternative Part Number 3RT10351BB44
Manufacturer Siemens
Product Type Power Contactor
Contactor Size S2
Pole Configuration 3 Pole
Operational Current (AC-3) 40 A at 400 V AC
Operational Current (AC-1) 60 A at 400 V AC (at 40 °C ambient temperature), 55 A at 60 °C ambient temperature
Control Voltage 24 V DC
Auxiliary Contacts 2 Normally Open (NO) + 2 Normally Closed (NC)
Connection Type Screw Connection
Insulation Voltage Rated at 690 V
Degree of Pollution 3
Installation Altitude Maximum 2,000 m above sea level
Ambient Operating Temperature -25 … +60 °C
Mechanical Operating Cycles 10,000,000 for contactor, 5,000,000 for contactor with electronics-compatible auxiliary block
Protection Class IP IP20 on the front
Surge Voltage Resistance Rated value 6 kV
Commodity Code 85364900

What are the main characteristics of this power contactor?

This power contactor is a 3-pole device with a control voltage of 24 V DC. It's designed for AC-3 applications up to 40 A and 400 V, with an operational power rating of 18.5 kW. It also features 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts and has a screw connection terminal.

Can this contactor be used in high-altitude installations?

Yes, the contactor can be used at altitudes up to 2000 metres above sea level without derating.

What is the insulation voltage rating for this contactor?

The insulation voltage rating for this contactor is 690 V, which is the rated value for ensuring safe operation.

What is the mechanical service life of this contactor?

The mechanical service life of the contactor is typically 10 million operating cycles, ensuring long-term reliability in your applications.

What is the degree of protection provided by the contactor?

The contactor provides a protection class of IP20 on the front, ensuring protection against solid objects larger than 12mm but not against water.

What are the ambient temperature limits for operating this contactor?

The contactor can operate within an ambient temperature range of -25 to +60 degrees Celsius.

How does the contactor handle shock and vibration?

The contactor is designed to withstand shock resistance with a sine pulse of 15g / 5 ms and 8g / 10 ms at DC, which helps ensure stability in environments with vibration or shock.

What is the size classification of this contactor?

This contactor is classified as Size S2, which is a standard size classification for Siemens contactors, indicating its physical dimensions and compatibility with other components.

Is the contactor suitable for use in controlling motors?

Absolutely, the contactor is specifically designed for motor control applications, with an AC-3 rating suitable for starting and stopping motors.

What type of connections does the contactor have for wiring?

The contactor is equipped with screw connection terminals, which provide a secure and reliable means of connecting wires.

  • Controlling motors in industrial applications
  • Switching heating elements in HVAC systems
  • Managing lighting circuits in commercial buildings
  • Operating pumps in water treatment facilities
  • Controlling compressors in refrigeration units
  • Activating electromagnetic devices in automation systems
  • Managing electrical circuits in manufacturing processes
  • Switching capacitive loads in power factor correction units
  • Regulating solenoids in pneumatic or hydraulic control systems
  • Facilitating on/off operations in conveyor belt systems

This content has been produced using multiple sources. EU Automation takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.

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