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Siemens 3RT1025-1B 3-Pole SIRIUS Power Contactor

Siemens 3RT1025-1B 3-pole power contactor

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ManufacturerSiemens

Part number3RT1025-1B

Manufacturer Siemens

Part Number 3RT1025-1B

Type Power Contactor

Poles 3

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3-pole configuration AC-3 rating 7.5 kW power 24V AC coil Size S0 Screw terminals

Product description

The Siemens 3RT1025-1B is a 3-pole power contactor from the SIRIUS series, designed for AC-3 applications with a current rating of 17A and a power capacity of 7.5 kW at 400V. This particular model features a 24V AC coil and is built in Size S0 with screw terminals for easy and secure wiring.

This contactor is commonly employed in industrial automation for the switching of motor loads, heating systems, and general power distribution. Its robust construction and reliable performance make it suitable for a variety of environments, including manufacturing facilities, processing plants, and building management systems.

Stanlo Automation, a veteran-owned business specializing in surplus industrial automation parts, offers the Siemens 3RT1025-1B. We are dedicated to providing high-quality, cost-effective components and reliable service to ensure your automation projects are successful and your operations remain uninterrupted.

Technical specifications

Manufacturer	Siemens
Part Number	3RT1025-1B
Type	Power Contactor
Poles	3
Rated Current AC-3	17 A
Rated Power AC-3	7.5 kW @ 400 V
Coil Voltage	24 V AC
Size	S0
Terminal Type	Screw

Common applications

Motor control

Pump control

Fan control

Lighting control

HVAC

Industrial automation

Compatible systems

Designed for use in control panels with 24V AC control power sources for motor and load switching.

Also known as

Siemens 3RT1025-1B, SIRIUS 3RT1025, Siemens 24V AC Contactor

Replaces / compatible with

This product is phased out. The preferred successor is the Siemens SIRIUS 3RT2025-1B.

Technical note

Expert tip

The 24V AC coil on the 3RT1025-1B is suitable for control systems where low voltage is preferred for operator safety and integration with PLC outputs.

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Frequently asked questions

What is the coil voltage for the Siemens 3RT1025-1B contactor?

The Siemens 3RT1025-1B features a 24V AC coil. This low voltage coil is often used in control circuits for safety and compatibility with standard control power transformers.