Product Description

Siemens SIRIUS Power Contactor 17A, 7.5kW, 400V, 3-Pole, 48V AC, Size S0 – 3RT2025-1AH20

Product Description

The Siemens 3RT2025-1AH20 is a reliable SIRIUS 3RT2 power contactor designed for switching and controlling three-phase motors and industrial electrical loads. It has an AC-3e/AC-3 rating of 17A and is suitable for motors up to 7.5 kW at 400V. The contactor features a 48V AC control voltage at 50/60 Hz, 3 main poles, 1 NO + 1 NC auxiliary contacts, screw terminal connections, and a compact S0 size. Siemens lists the 3RT2025-1AH20 as an active product in the SIRIUS 3RT contactor family.

The 3RT2025-1AH20 is suitable for applications such as motor starters, industrial automation panels, MCC panels, pumps, compressors, conveyors, HVAC equipment, and general machine control where a 48V AC control supply is required.

Key Features

• Genuine Siemens SIRIUS 3RT2 Power Contactor

• Model: 3RT2025-1AH20

• Utilization Category: AC-3e/AC-3

• Rated Operational Current: 17A

• Motor Rating: 7.5 kW at 400V

• Rated Operating Voltage: 400V

• 3-Pole Configuration

• Control Voltage: 48V AC

• Control Frequency: 50/60 Hz

• Auxiliary Contacts: 1 NO + 1 NC

• Screw Terminal Connections

• Contactor Size: S0

• Rated Insulation Voltage: 690V

• Compact industrial design

• Siemens SIRIUS 3RT contactor family

• Active product status according to Siemens Industry Mall

Applications

• Three-phase motor control

• DOL motor starters

• Motor Control Centers (MCC)

• Industrial automation panels

• Pump control panels

• Compressor control

• Conveyor systems

• HVAC equipment

• Manufacturing machinery

• OEM control panels

• Machine automation

• Factory electrical systems

Benefits

• Reliable 17A AC-3e/AC-3 motor switching

• Suitable for motors up to 7.5 kW at 400V

• 48V AC, 50/60 Hz control voltage

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

• Secure screw-terminal connections

• Compact S0 construction

• Suitable for integration into industrial control panels

• Reliable Siemens SIRIUS technology

• Suitable for DOL and other motor-control applications

Frequently Asked Questions

Q1. What is Siemens 3RT2025-1AH20 used for?

The 3RT2025-1AH20 is a Siemens SIRIUS power contactor used for switching and controlling three-phase motors and industrial electrical loads.

Q2. What is the rated current of 3RT2025-1AH20?

The contactor has an AC-3e/AC-3 rated current of 17A.

Q3. What motor power can it handle?

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

Q4. What is the coil/control voltage?

The contactor uses a 48V AC control voltage at 50/60 Hz. Siemens identifies this exact configuration as 3RT2025-1AH20.

Q5. How many auxiliary contacts are provided?

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

Q6. What type of terminals does it use?

The 3RT2025-1AH20 uses screw terminal connections.

Q7. What is the contactor size?

The contactor is Size S0.

Q8. Is it suitable for DOL starters?

Yes. It can be used as the contactor in a DOL motor starter, together with an appropriately selected motor protection device.

Q9. Is the 3RT2025-1AH20 an active Siemens product?

Yes. Siemens Industry Mall lists 3RT2025-1AH20 with PM300: Active Product status.

Q10. Why buy Siemens 3RT2025-1AH20 from SB Smart?

SB Smart supplies Siemens industrial electrical and automation products for OEMs, panel builders, contractors, and industrial users, with product assistance, GST billing, bulk-order support, and delivery across India.