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Siemens
3RT2027-1BB40
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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RT2027-1BB40 |
| Alternative Part Number | 3RT20271BB40 |
| Manufacturer | Siemens |
| Contact Configuration | 1 Normally Open (NO) / 1 Normally Closed (NC) |
| Rated Current | 40 A |
| Power Rating | 48 kW |
| Control Voltage | 24 V dc |
| Contactor Size | S0 |
| Connection Type | Screw-type terminals |
| Pollution Degree | 3 |
| Installation Altitude | Up to 2000 metres above sea level |
| Ambient Operating Temperature | -25 ... +60 °C |
| Storage Temperature | -55 ... +80 °C |
| Shock Resistance | 10g / 5 ms, 7.5g / 10 ms at DC; 15g / 5 ms, 10g / 10 ms at sine pulse |
| Impulse Voltage Resistance | Rated at 6 kV |
| Insulation Voltage | Rated at 690 V |
| Mechanical Operating Cycles | Typical 10,000,000 |
| Protection Class | IP20 |
| Compliance | EMC, KTL certifications; conforms to IEC 60947-4-1 for mirror contact functionality |
The Siemens 3RT2027-1BB40 is a robust power contactor designed to handle a variety of applications within industrial environments. This contactor is part of the SIRIUS product family, renowned for its reliability and efficiency. It features a 1NO/1NC contact configuration, making it versatile for use in numerous control and switching operations.
With a rated operational current of 40 A and the capability to manage motors with a power of up to 48 kW, this contactor is an excellent choice for managing substantial loads. The coil operates at a control supply voltage of 24 V dc, ensuring compatibility with common DC control systems.
The 3RT2027-1BB40 is engineered to fit into size S0 contactor housings, and it comes with screw terminals for secure and straightforward wiring. It boasts an insulation voltage rated at 690 V and is designed to withstand impulse voltages up to 6 kV, providing a high degree of protection against voltage spikes.
This contactor is designed to perform reliably in a wide range of ambient temperatures, from as low as -25°C to as high as +60°C, making it suitable for challenging industrial environments. Additionally, it is rated for up to 10 million mechanical operating cycles, indicating its durability and long service life.
The Siemens 3RT2027-1BB40 is a high-quality component that offers dependable performance for controlling electric motors and other electrical loads in industrial applications. Its design and construction are focused on providing a safe, efficient, and durable solution for power switching needs.
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Frequently Asked Questions
What is the current rating for this contactor?
The contactor is rated for 40 A.
Can this contactor be used for motor control applications?
Yes, it is suitable for motor control applications and is rated for AC-3 usage, which is typical for starting and stopping motors.
What is the coil voltage for this contactor?
The coil operates at a control supply voltage of 24 V dc.
What are the contact configurations for this contactor?
This contactor comes with 1 Normally Open (NO) and 1 Normally Closed (NC) contact configuration.
What is the power rating for this contactor when used with a three-phase motor?
When used with a three-phase motor, the contactor has a power rating of 48 kW at 400 V.
What is the size of the contactor?
The contactor is of size S0, which is a standard size for this type of device.
Is the contactor finger-safe?
Yes, it is designed to be finger-safe, providing protection against electrical shock.
What is the typical mechanical operating life of this contactor?
The typical mechanical operating life of the contactor is around 10 million cycles.
Does this contactor have a mirror contact feature?
Yes, it includes a mirror contact feature according to IEC 60947-4-1.
What type of terminals does this contactor have for electrical connection?
It has screw-type terminals for both the main current circuit and the auxiliary and control current circuit.
What is the insulation voltage rating of this contactor?
The insulation voltage rating is 690 V.
Can this contactor be used at high altitudes?
Yes, it can be used at installation altitudes up to 2,000 meters above sea level.
What is the operating temperature range for this contactor?
The operating temperature range is from -25 °C to +60 °C.
What is the B10 value for this contactor?
The B10 value with a high demand rate according to SN 31920 is 1,000,000.
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