Product Description

Power Contactor AC-3 16 A 7.5 kW / 400 V 1 NO 24 V DC 3-Pole Size S00 Screw Terminals - 3RT2018-1BB418K

Product Description

The Siemens 3RT2018-1BB418K is a SIRIUS power contactor designed for reliable switching and control of three-phase motors in industrial and commercial electrical systems. It is suitable for AC-3e/AC-3 motor applications, with a rated operational current of 16 A and motor power up to 7.5 kW at 400 V. The contactor features a 24 V DC control coil, 3 main poles, 1 NO auxiliary contact, screw terminal connections, and a compact S00 size. Siemens specifies the corresponding 3RT2018-1BB41 variant with these core specifications.

This Siemens power contactor is suitable for DOL motor starters, motor control panels, pumps, compressors, conveyors, HVAC systems, machine tools, industrial automation, and factory electrical equipment. Its compact S00 construction helps save panel space while providing dependable switching for three-phase motor applications.

The 24 V DC control coil makes the contactor suitable for low-voltage control circuits and PLC-based automation systems. It can be combined with a compatible Siemens thermal overload relay or motor protection device to create a complete motor starter solution.

Key Features

• Brand: Siemens

• Product Family: SIRIUS 3RT

• Model: 3RT2018-1BB418K

• 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

• Auxiliary Contact: 1 NO

• Terminal Connection: Screw Terminal

• Contactor Size: S00

• Product Type: Power Contactor

• Application: Three-phase motor switching and control

Applications

The Siemens 3RT2018-1BB418K can be used in:

• Three-phase motor control

• DOL motor starter applications

• Industrial motor control panels

• Pump control systems

• Compressor systems

• Conveyor systems

• HVAC equipment

• Machine tools

• Industrial automation

• PLC-controlled motor systems

• Factory electrical panels

• OEM control panels

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 coil for automation systems

• 1 NO auxiliary contact for control and signalling

• Secure screw-terminal connections

• Compact S00 construction

• Suitable for PLC-based motor control

• Easy integration into industrial control panels

• Compatible with suitable Siemens motor-protection components

• Reliable Siemens SIRIUS technology

Why Choose Siemens 3RT2018-1BB418K?

The Siemens SIRIUS 3RT2018-1BB41 series provides dependable switching for industrial motor-control applications. Its 16 A AC-3 rating, 7.5 kW motor capacity at 400 V, 24 V DC coil, 3-pole configuration, 1 NO auxiliary contact, screw terminals, and S00 compact design make it suitable for a wide range of motor starter and automation requirements.

At SB Smart, Faridabad, we supply genuine Siemens SIRIUS power contactors, thermal overload relays, motor protection relays, motor protection circuit breakers, soft starters, MCCBs, MCBs, and industrial automation products at competitive prices. We provide GST invoices, technical assistance, bulk-order support, secure packaging, and delivery across Faridabad, Delhi NCR, and major cities throughout India.

Whether you are sourcing a Siemens contactor for a new motor control panel, DOL starter, industrial automation project, replacement requirement, or bulk electrical procurement, SB Smart provides product assistance and nationwide supply support.

Frequently Asked Questions

Q1. What is Siemens 3RT2018-1BB418K?
It is a Siemens SIRIUS power contactor used for switching and controlling three-phase motors and industrial electrical loads.

Q2. What is the rated current?
The corresponding 3RT2018-1BB41 variant is rated at 16 A for AC-3e/AC-3 applications.

Q3. What motor power can it handle?
It is suitable for motor applications up to 7.5 kW at 400 V.

Q4. What is the control voltage?
The contactor uses a 24 V DC control coil.

Q5. How many main poles does it have?
It has 3 main poles for three-phase motor switching.

Q6. Does it have an auxiliary contact?
Yes. The corresponding 3RT2018-1BB41 variant has 1 NO auxiliary contact.

Q7. What type of terminals does it use?
It uses screw terminal connections.

Q8. What is the contactor size?
It is a compact S00-size contactor.

Q9. 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.

Q10. Where can I buy Siemens contactors in India?
SB Smart, Faridabad supplies Siemens SIRIUS contactors and industrial electrical and automation products with GST billing, technical assistance, bulk-order support, secure packaging, and delivery across India.