Product Description

Siemens SIRIUS Power Contactor 12A, 5.5kW, 400V, 3-Pole, 110V DC, Size S0 – 3RT2024-1BF40

Product Description

The Siemens 3RT2024-1BF40 is a SIRIUS 3RT power contactor designed for reliable switching and control of three-phase motors and industrial electrical loads. It is rated 12A for AC-3e/AC-3 applications and is suitable for motors up to 5.5kW at 400V. The contactor features a 110V DC control voltage, 3 main poles, 1 NO + 1 NC auxiliary contacts, screw terminal connections, and a compact S0 size. Siemens lists this model as PM300 – Product available for sale.

The 3RT2024-1BF40 is suitable for three-phase motor control, DOL starters, MCC panels, pumps, compressors, conveyors, HVAC equipment, industrial machinery, OEM control panels, and factory automation applications requiring a 110V DC control supply.

Key Features

• Brand: Siemens

• Product family: SIRIUS 3RT

• Model: 3RT2024-1BF40

• Utilization category: AC-3e/AC-3

• Rated operational current: 12A

• Motor rating: 5.5kW at 400V

• Main circuit: 3-pole

• Control voltage: 110V DC

• Auxiliary contacts: 1 NO + 1 NC

• Terminal type: Screw terminal

• Contactor size: S0

• Rated insulation voltage: 690V

• Surge withstand voltage: 6kV

• Front protection: IP20

• Mechanical service life: typically 10 million switching cycles

• Operating temperature: -25°C to +60°C

Applications

• Three-phase motor control

• DOL motor starters

• Motor Control Centers (MCC)

• Industrial automation panels

• Pump control systems

• Compressor systems

• Conveyor systems

• HVAC equipment

• Manufacturing machinery

• OEM electrical panels

• Machine automation

• Factory electrical systems

Benefits

• Reliable 12A AC-3e/AC-3 motor switching

• Suitable for motors up to 5.5kW at 400V

• 110V DC control supply

• 1 NO + 1 NC auxiliary contacts for control and signaling

• Secure screw-terminal connections

• Compact S0 construction

• High 690V insulation voltage

• 6kV surge withstand capability

• Long mechanical service life

• Suitable for DOL starter assemblies

• Reliable Siemens SIRIUS technology

• Easy integration into industrial control panels

Frequently Asked Questions

Q1. What is Siemens 3RT2024-1BF40 used for?

The 3RT2024-1BF40 is a Siemens SIRIUS power contactor used for switching and controlling three-phase motors and industrial electrical loads. It is rated 12A AC-3e/AC-3 and supports motors up to 5.5kW at 400V.

Q2. What is the rated current of 3RT2024-1BF40?

The contactor has a rated operational current of 12A for AC-3e/AC-3 applications.

Q3. What motor power can it handle?

It is suitable for motors up to 5.5kW at 400V.

Q4. What is the control voltage?

The contactor operates with a 110V DC control voltage.

Q5. How many auxiliary contacts are provided?

It provides 1 NO + 1 NC auxiliary contacts, suitable for control, feedback, signaling, and electrical interlocking.

Q6. What type of terminals does it use?

The 3RT2024-1BF40 uses screw terminal connections.

Q7. What is the contactor size?

The contactor is Size S0.

Q8. What is the insulation voltage?

The rated insulation voltage is 690V, with a 6kV surge withstand capability.

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 selected motor-protection device.

Q10. Is Siemens 3RT2024-1BF40 available?

Siemens Industry Mall lists the 3RT2024-1BF40 with PM300 – Product available for sale status.