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Siemens 3RT2028-1AB00 3-Pole Power Contactor — 38A 18.5kW

Siemens 3RT2028-1AB00 3-Pole Power Contactor

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ManufacturerSiemens

Part number3RT2028-1AB00

Type Power Contactor

AC-3e/AC-3 Rating 38A, 18.5kW @ 400V

Poles 3

Coil Voltage 24V AC

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38A current rating 18.5kW power handling 24V AC coil 3-pole configuration Screw terminals 1 NO + 1 NC auxiliary contacts

Product description

The Siemens 3RT2028-1AB00 is a robust 3-pole power contactor designed for AC-3e/AC-3 applications, capable of switching loads up to 38A and 18.5kW at 400V. This size S0 contactor operates with a 24V AC coil and features standard screw terminals for secure connections. It includes 1 normally open (NO) and 1 normally closed (NC) auxiliary contact, making it suitable for basic control and signaling tasks.

This contactor finds common use in industrial motor control, machine tools, and power distribution systems where reliable switching of medium-sized loads is required. Its compact S0 size makes it suitable for panel builders and applications with limited space, ensuring efficient power management.

Stanlo Automation, a veteran-owned surplus distributor, offers the Siemens 3RT2028-1AB00 for your automation needs. We provide cost-effective solutions and reliable service to help you maintain operational continuity. Trust Stanlo for your surplus industrial components.

Technical specifications

Type	Power Contactor
AC-3e/AC-3 Rating	38A, 18.5kW @ 400V
Poles	3
Coil Voltage	24V AC
Frequency	50 Hz
Auxiliary Contacts	1 NO + 1 NC
Terminal Type	Screw
Size	S0

Common applications

Motor Control

Machine Tooling

Power Distribution

Industrial Control Panels

Automation Systems

Compatible systems

Suitable for integration into control cabinets with Siemens S0 size components and related control systems.

Also known as

Siemens 3RT2028 Contactor SIRIUS 3RT2028 3RT2028-1A 38A Siemens Contactor

Replaces / compatible with

Direct replacement for other Siemens 3RT2028 variants with similar ratings and coil voltages. Compatible with standard Siemens accessories.

Technical note

Expert tip

This contactor is designed for frequent switching and should be paired with an appropriate overload relay for motor protection.

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Frequently asked questions

What are the key specifications for the Siemens 3RT2028-1AB00 power contactor?

The Siemens 3RT2028-1AB00 is a 3-pole power contactor rated for 38A and 18.5kW at 400V under AC-3e/AC-3 conditions. It has a 24V AC coil and 1 NO + 1 NC auxiliary contacts with screw terminals.