The Siemens 3RT2016-1BB428K is a compact and reliable SIRIUS power contactor designed for switching and controlling three-phase motors in industrial, commercial, and automation applications. It is suitable for AC-3e/AC-3 applications at 9 A and motor loads up to 4 kW at 400 V. The contactor features a 24 V DC control coil, 3 main poles, 1 NC auxiliary contact, screw terminal connections, and a compact S00 size. Siemens specifies the corresponding 3RT2016-1BB42 variant with these characteristics.
The contactor is suitable for DOL motor starters, motor control panels, pumps, compressors, conveyors, HVAC systems, machine tools, industrial automation equipment, and factory electrical panels. Its compact S00 construction helps save valuable control-panel space while providing dependable switching for three-phase motor applications.
The 24 V DC coil makes the contactor suitable for DC control circuits commonly used in industrial automation and motor-control systems. The 1 NC auxiliary contact can be used for control logic, electrical interlocking, signalling, and status feedback.
Brand: Siemens
Product Family: SIRIUS 3RT
Model: 3RT2016-1BB428K
Base Variant: 3RT2016-1BB42
Product Type: Power Contactor
Utilization Category: AC-3e/AC-3
Rated Operational Current: 9 A
Motor Rating: 4 kW at 400 V
Main Poles: 3-Pole
Control Coil: 24 V DC
Auxiliary Contact: 1 NC
Terminal Connection: Screw Terminal
Contactor Size: S00
Application: Three-phase motor switching and control
The Siemens 3RT2016-1BB428K is suitable for:
Three-phase motor control
DOL motor starter applications
Industrial motor control panels
PLC and automation control panels
Pump control systems
Compressor systems
Conveyor systems
HVAC equipment
Machine tools
Factory automation
OEM control panels
Motor switching applications
Reliable 9 A AC-3e/AC-3 motor switching
Suitable for motors up to 4 kW at 400 V
24 V DC control coil for industrial control applications
1 NC auxiliary contact for control and interlocking circuits
Secure screw-terminal connections
Compact S00 construction
Suitable for industrial automation systems
Easy integration with compatible Siemens motor protection devices
Space-efficient motor starter solution
Reliable Siemens SIRIUS technology
The Siemens SIRIUS 3RT2016-1BB428K provides dependable switching for three-phase motor-control applications. Its 9 A AC-3 rating, 4 kW motor capacity at 400 V, 24 V DC coil, 3-pole configuration, 1 NC auxiliary contact, screw terminals, and S00 compact design make it suitable for motor starters, electrical control panels, machine automation systems, and industrial switching applications.
The 1 NC auxiliary contact provides an additional contact point for electrical interlocking, control logic, signalling, and status-related functions. The compact S00 design is useful for applications where efficient panel-space utilization is important.
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 motor starter, electrical control panel, PLC automation project, machine-control application, replacement requirement, or bulk procurement, SB Smart provides product assistance and nationwide supply support.
Q1. What is Siemens 3RT2016-1BB428K?
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?
The contactor is rated at 9 A for AC-3e/AC-3 applications.
Q3. What motor power can it handle?
It is suitable for motor applications up to 4 kW at 400 V.
Q4. What is the control coil voltage?
It 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 3RT2016-1BB42 variant has 1 NC 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 Siemens SIRIUS 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 suitably rated motor-protection equipment.
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.
| Parameter | Specification |
|---|---|
| Product Series | Siemens SIRIUS 3RT2 |
| Model Number | 3RT2016-1BB428K |
| Product Type | Power Contactor |
| Contactor Configuration | 3 Pole |
| Rated Current (AC-3) | ~9 A |
| Motor Rating | ~4 kW @ 400 V AC |
| Coil Type | 24 V DC Control Coil |
| Contact Feedback | Mirror Contact Elements |
| Terminal Type | Screw Terminals |
| Frame Size | S00 |
| Application | Motor Control & Power Switching |
| Brand | Siemens |
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