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Siemens 3RT2 Contactor, 24V DC Coil, 3-Pole, 38A, 18.5 kW, 3 NO, 400V AC 3RT2028-2BB40
Specifications
| Country of Origin | Germany |
|---|---|
| Brand | Siemens |
| Function | Motor Control |
| Length | 102mm |
| Model | 3RT2028-2BB40 |
| Depth | 107mm |
| Width | 45mm |
| Mount Type | DIN Rail |
| Series | 3RT2 |
| Power Rating | 18.5kW |
| Maximum Operating Temperature | 60°C |
| Minimum Operating Temperature | -25°C |
| Terminal type | Cage Clamp |
| Number of Poles | 3 |
| Standards/Approvals | EAC |
| Pay online using | Or choose to pay later via bank transfer |
| RS Stock No. | 706-1421Brand: SiemensManufacturers Part No.: 3RT2028-2BB40Distrelec Article No.: 30124303 |
| Contact Voltage | 400V ac |
| Coil Voltage | 24V dc |
| Normal State Configuration | 3 NO |
| Better World Claim | Low Carbon Manufacture |
| Contact Current | 38A |
| Number of Auxiliary Contacts | 2 |
| Auxiliary Contact Configuration | 1 NO/1 NC |
| Operational Current Ie | 50A |
| Control Circuit Voltage Uc | 24V dc |
| Pole and Throw Configuration | 3 |
Key Features
- Equipped with a 24V DC coil suitable for precise control circuits.
- Built with 3 poles to provide reliable switching for three-phase systems.
- Rated for 38 amperes contact current and 400V AC contact voltage.
- Power rating of 18.5 kW for medium power motor load control.
- Features 3 normally open contacts for main switching functionality.
- Includes auxiliary contacts with 1 NO and 1 NC configuration for enhanced control signalling.
- Designed for DIN rail mounting for easy integration into control panels.
- Constructed with cage clamp terminal type ensuring secure and stable connections.
Product Description
Siemens 3RT2028-2BB40 contactor features a 24V DC coil designed for high-performance motor control in industrial and automation applications. This 3-pole contactor supports a contact current of 38 amperes across 400V AC contact voltage, making it suitable for controlling motors up to 18.5 kW power rating. Its construction and design ensure robust operation within temperature ranges from -25°C to 60°C, ensuring reliability across diverse environments.
The contactor offers three normally open (NO) main contacts and two auxiliary contacts configured as 1 NO and 1 normally closed (NC) contact. It utilizes cage clamp terminals for secure wiring connections and is mounted on DIN rails for straightforward installation in industrial control panels.
Compact in size with dimensions 102mm (length) × 45mm (width) × 107mm (depth), this Siemens contactor complies with the EAC standards and is part of the 3RT2 series known for climate-proof designs and energy efficiency. The product supports operational currents up to 50A and control circuit voltage of 24V DC, suitable for motor control tasks in manufacturing, HVAC, and industrial automation systems.
Equipped with a 24V DC coil suitable for precise control circuits. Built with 3 poles for reliable three-phase system switching. Rated 38A contact current and 400V AC contact voltage. 18.5 kW power rating suitable for medium power motor control.
Includes 3 normally open main contacts and 1 NO/1 NC auxiliary contacts. DIN rail mount type facilitates easy panel integration. Cage clamp terminal type ensures secure electrical connections. Operates within -25°C to 60°C temperature range.
Compact form factor with dimensions 102 × 45 × 107 mm. Manufactured in Germany with EAC certification and low carbon manufacturing.
This Siemens 3RT2 contactor is ideal for industrial automation, machinery control, water treatment, HVAC systems, and manufacturing process control. It provides a durable, energy-efficient solution for motor switching and auxiliary control needs. Explore the full range of Siemens automation and control gear at EnvMart for professional-grade industrial components.
Explore more products in our Contactors & Auxiliary Contacts category.
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Frequently Asked Questions
The power rating of this contactor is 18.5 kW, making it suitable for medium power motor control applications.
It is rated for a contact current of 38 amperes.
This model features a 24V DC coil, designed for precise control circuits.
This contactor is built with 3 poles for reliable switching in three-phase systems.
The dimensions of the Siemens 3RT2028-2BB40 contactor are 102 mm in length, 45 mm in width, and 107 mm in depth.
It can operate within a temperature range of -25°C to 60°C.
It utilizes cage clamp terminals, ensuring secure and stable connections.
This contactor includes 2 auxiliary contacts configured as 1 normally open (NO) and 1 normally closed (NC).
Yes, it is designed for DIN rail mounting, facilitating easy integration into control panels.
This contactor complies with EAC standards, indicating its adherence to relevant safety and performance criteria.
It is ideal for industrial automation, machinery control, water treatment, HVAC systems, and manufacturing process control.
The operational current rating is up to 50A.
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