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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RT2027-1FB44-3MA0 |
| Alternative Part Number | 3RT20271FB443MA0 |
| Manufacturer | Siemens |
| Product Type | Power Contactor |
| Contact Configuration | 3NO (3 Normally Open) |
| Rated Operational Current | AC-1: 50 A, AC-3: 32 A |
| Rated Operational Voltage | Up to 690 V ac |
| Control Voltage | 24 V DC |
| Auxiliary Contacts | Yes, with plugged-in diode combination |
| Contactor Size | S0 |
| Rated Control Circuit Voltage | 24 V DC |
| Rated Frequency of Operation | AC-1: 1000 1/h, AC-3: 750 1/h |
| Rated Power | AC-3: 15 kW / 400 V |
| Mounting Type | Screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022 |
| Protection Class | IP20 |
| Ambient Temperature Range | Operating: -25 … +60 °C, Storage: -55 … +80 °C |
| Shock Resistance | At DC: 10g / 5 ms, 7.5g / 10 ms |
| Insulation Voltage | Rated value: 690 V |
| Commodity Code | 85364900 |
The Siemens 3RT2027-1FB44-3MA0 is a robust power contactor designed to handle a variety of demanding applications. Engineered for high performance, this contactor is capable of switching motor loads up to 15 kW at 400 V in AC-3 usage categories, making it an ideal choice for industrial environments where reliable motor control is essential.
This three-pole contactor comes equipped with a 24 V DC control voltage and an integrated diode assembly, ensuring smooth operation and protection against voltage spikes. The contactor's auxiliary contacts are permanently mounted, providing additional functionality for various control and signalling operations.
With a current rating of 32 A and an insulation voltage rated at 690 V, the Siemens 3RT2027-1FB44-3MA0 offers a combination of safety and efficiency. Its compact size, belonging to the S0 size category, allows for space-saving installation, while the screw terminals ensure a secure and maintenance-friendly connection.
The contactor's design adheres to a high degree of protection, with an IP20 rating on the front, safeguarding against finger contact and foreign objects. Additionally, it is designed to withstand the rigours of industrial environments, with a shock resistance that meets stringent standards and an operational temperature range from -25 °C to +60 °C, ensuring reliability in a wide range of storage and operating conditions.
Overall, the Siemens 3RT2027-1FB44-3MA0 is a dependable and efficient solution for controlling motors in industrial applications, offering durability and performance that professionals can trust.
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Frequently Asked Questions
What is the rated operational voltage for this power contactor?
The rated operational voltage for this power contactor is 690 V ac.
Can this contactor be used for three-phase motor control?
Yes, this contactor is suitable for three-phase motor control, with an AC-3 rating for 15 kW / 400 V applications.
What is the control voltage required for this contactor?
The control voltage required for this contactor is 24 V DC.
Does this contactor come with auxiliary contacts?
Yes, this contactor is equipped with plugged-in diode combination auxiliary contacts.
What is the size of this contactor?
The size of this contactor is S0, which is a standard size for this type of device.
What is the maximum operating altitude for this contactor?
The maximum operating altitude for this contactor is 2,000 meters above sea level.
What are the ambient temperature limits for operating this contactor?
The ambient temperature range for operating this contactor is between -25 °C and +60 °C.
What is the protection class of this contactor?
The protection class for the front of this contactor is IP20, indicating a basic level of protection against solid objects.
How many poles does this contactor have?
This contactor is a 3-pole device, suitable for three-phase applications.
What is the full-load current rating for a three-phase AC motor using this contactor?
The full-load current (FLA) rating for a three-phase AC motor using this contactor is 27 A at both 480 V and 600 V.
