Siemens Power Contactor, AC-3e/AC-3, 16 A, 7.5 kW / 400 V, 3-Pole, 24 V DC, Spring-Loaded Terminals, Size: S00 - 3RT2018-2BB41

Product Description

Product Description

The Siemens 3RT2018-2BB4 is a SIRIUS 3RT power contactor designed for reliable switching and control of three-phase motors and industrial electrical loads. It is rated 16 A in AC-3e/AC-3 applications and is suitable for motor loads up to 7.5 kW at 400 V. The contactor operates with a 24 V DC control voltage, features 3 main poles, compact S00 size, and spring-loaded terminal connections.

The 3RT2018-2BB4 series is suitable for motor starters, industrial automation systems, pumps, compressors, conveyors, HVAC equipment, machine tools, control panels, and other industrial applications requiring dependable motor switching. Siemens lists the corresponding 3RT2018-2BB41 and 3RT2018-2BB42 variants with 1 NO and 1 NC auxiliary contacts respectively.

Key Features

• Brand: Siemens

• Product Family: SIRIUS 3RT

• Model: 3RT2018-2BB4

• Utilization Category: AC-3e/AC-3

• Rated Operational Current: 16 A

• Motor Rating: 7.5 kW at 400 V

• Main Poles: 3-Pole

• Control Voltage: 24 V DC

• Contactor Size: S00

• Terminal Type: Spring-Loaded Terminal

• Auxiliary Contact: Variant dependent — 1 NO or 1 NC

• Application: Motor switching and industrial control

Applications

• Three-phase motor control

• DOL motor starters

• Pump control systems

• Compressor systems

• Conveyor systems

• HVAC equipment

• Industrial automation

• Machine tools

• Motor Control Centers

• Industrial control panels

• Manufacturing machinery

Benefits

• Reliable 16 A AC-3e/AC-3 motor switching

• Suitable for motors up to 7.5 kW at 400 V

• 24 V DC control voltage

• Compact S00 design for space-saving installations

• Spring-loaded terminals provide secure electrical connections

• Suitable for industrial motor-control applications

• Easy integration into automation and control panels

• Reliable Siemens SIRIUS technology

• Available with different auxiliary-contact configurations

Frequently Asked Questions

Q1. What is Siemens 3RT2018-2BB4 used for?

It is used for switching and controlling three-phase motors and industrial electrical loads in motor-control and automation applications.

Q2. What is the rated current?

The contactor has an AC-3e/AC-3 rated current of 16 A.

Q3. What motor power can it handle?

It is suitable for motors up to 7.5 kW at 400 V.

Q4. What is the control voltage?

The contactor uses a 24 V DC control voltage.

Q5. What is the contactor size?

The contactor is Size S00.

Q6. What type of terminals are provided?

The 3RT2018-2BB4 series uses spring-loaded terminals.

Q7. Does it have auxiliary contacts?

Yes. The exact auxiliary-contact configuration depends on the final suffix. 3RT2018-2BB41 has 1 NO, while 3RT2018-2BB42 has 1 NC.

Q8. Can it be used in a DOL starter?

Yes. It can be used as the main contactor in a DOL motor starter when paired with an appropriately rated motor-protection device.

Q9. What applications are suitable for this contactor?

It can be used in pumps, compressors, conveyors, HVAC systems, machine tools, industrial automation panels, and other three-phase motor-control applications.

Q10. What are the main specifications?

The main specifications are 16 A AC-3e/AC-3, 7.5 kW at 400 V, 24 V DC control, 3-pole, S00 size, and spring-loaded terminals.