The Siemens 3RT2018-1BF41 is a SIRIUS power contactor designed for reliable switching and control of three-phase motors in industrial and commercial electrical systems. It is rated for AC-3e/AC-3 applications at 16 A and is suitable for motor loads 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. This variant also incorporates an integrated diode for the DC coil circuit.
The Siemens SIRIUS 3RT2018-1BF41 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 design makes it suitable for space-efficient control panels where dependable motor switching is required.
The 24 V DC control coil allows integration with PLC-based control systems, automation controllers, and other low-voltage DC control circuits. The contactor can be combined with a suitable Siemens thermal overload relay or motor protection device to create a complete motor starter solution.
Brand: Siemens
Product Family: SIRIUS 3RT
Model: 3RT2018-1BF41
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 Contacts: 1 NO
Terminal Connection: Screw Terminal
Contactor Size: S00
Integrated Coil Protection: Diode
Product Type: Power Contactor
Application: Three-phase motor switching and control
The Siemens 3RT2018-1BF41 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
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
Integrated diode for the DC coil circuit
Suitable for PLC-based motor control
Easy integration into industrial control panels
Reliable Siemens SIRIUS technology
The SIRIUS 3RT2018-1BF41 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 applications. The integrated diode is an additional feature of this specific variant.
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.
Q1. What is Siemens 3RT2018-1BF41?
It is a Siemens SIRIUS power contactor designed for switching and controlling three-phase motors and industrial electrical loads.
Q2. What is the rated current of 3RT2018-1BF41?
The contactor 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 coil 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 3RT2018-1BF41 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. Does this variant have any coil protection?
Yes. The 3RT2018-1BF41 has an integrated diode in the DC coil circuit.
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, and delivery across India.
| Parameter | Specification |
|---|---|
| Product Series | Siemens SIRIUS 3RT2 |
| Model Number | 3RT2018-1BF41 |
| Product Type | Power Contactor |
| Contactor Configuration | 3 Pole |
| Rated Current (AC-3) | 16 A |
| Motor Rating | 7.5 kW @ 400 V AC |
| Coil Type | 110 V DC |
| Auxiliary Contact | 1 NO |
| Main Contacts | 3 NO |
| Contact Feedback | Mirror Contact Elements |
| Terminal Type | Screw Terminals |
| Frame Size | S00 |
| Application | Motor Control & Power Switching |
| Brand | Siemens |
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