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Siemens 3RT2028-1BB40 3-Pole Power Contactor — 38A 18.5kW 24V DC

Name: Siemens 3RT2028-1BB40
Brand: Siemens
SKU: 3RT2028-1BB40
Availability: InStock

Siemens 3RT2028-1BB40 3-pole DC power contactor.

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ManufacturerSiemens

Part number3RT2028-1BB40

Type AC-3e/AC-3

Current Rating 38A

Power 18.5 kW @ 400V

Poles 3

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38A current capacity 18.5kW power handling 24V DC coil 1 NO + 1 NC auxiliary contacts Screw terminals Size S0

Product description

The Siemens 3RT2028-1BB40 is a 3-pole power contactor designed for AC-3e/AC-3 applications, rated for 38 Amps and 18.5 kW at 400 Volts. This DC-operated contactor features a 24 Volt DC coil and includes 1 normally open (NO) and 1 normally closed (NC) auxiliary contact. It uses screw terminals for reliable connections and is built in size S0.

This contactor is ideal for motor control and power switching in industrial automation systems that utilize 24V DC control voltages. Its robust design and capacity make it suitable for demanding applications in manufacturing, machine building, and process control where DC control is preferred or required.

Stanlo Automation, a veteran-owned surplus parts distributor, provides the Siemens 3RT2028-1BB40. Secure essential industrial components from a trusted source and benefit from our commitment to quality and efficient service.

Technical specifications

Type	AC-3e/AC-3
Current Rating	38A
Power	18.5 kW @ 400V
Poles	3
Coil Voltage	24V DC
Aux Contacts	1 NO + 1 NC
Terminals	Screw
Size	S0

Common applications

Motor control

Industrial automation

Machine building

Process control

DC control systems

Compatible systems

24V DC control circuits Siemens SIRIUS 3RT2 accessories DC-powered automation systems

Also known as

Siemens 3RT2028 DC SIRIUS 3RT2028 24V 3RT2028-1BB40 contactor

Replaces / compatible with

Compatible with Siemens 3RT2 series accessories and control components.

Technical note

Expert tip

When using 24V DC coils, ensure proper polarity is maintained during wiring to guarantee correct operation and prevent potential damage to the coil or control system.

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Frequently asked questions

What is the control voltage for the Siemens 3RT2028-1BB40 contactor?

The Siemens 3RT2028-1BB40 contactor is operated by a 24 Volt DC coil. This makes it suitable for integration into control systems that commonly use low-voltage DC power supplies for their logic and control circuits.