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Siemens 3RT1024-3BB40 SIRIUS 3-Pole Spring-Terminal Contactor

Siemens 3RT1024-3BB40 SIRIUS 3-pole power contactor with spring terminals.

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ManufacturerSiemens

Part number3RT1024-3BB40

Type Power Contactor

Manufacturer Siemens

Series SIRIUS 3RT1

Poles 3

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3-pole configuration AC-3 rated 24V DC coil Size S0 Spring-type terminals Vibration resistant

Product description

The Siemens 3RT1024-3BB40 is a 3-pole power contactor from the SIRIUS series, distinguished by its spring-type terminal connections. It is rated for AC-3 12A and 5.5kW at 400V, operating with a 24V DC coil. This Size S0 contactor is designed for efficient and reliable motor control and switching applications.

This contactor is ideal for applications where quick and secure connections are paramount, such as in control panels, motor starter assemblies, and general industrial automation. Its spring-type terminals offer vibration resistance and ease of installation.

Stanlo Automation, a veteran-owned surplus parts distributor, is your go-to source for industrial automation components. We pride ourselves on offering quality parts, competitive pricing, and reliable service to meet your operational needs.

Technical specifications

Type	Power Contactor
Manufacturer	Siemens
Series	SIRIUS 3RT1
Poles	3
Current Rating (AC-3)	12 A
Power Rating (400V)	5.5 kW
Coil Voltage	24 V DC
Size	S0
Termination	Spring-type terminal

Common applications

Motor control

Control panels

Automation systems

Machine building

Industrial machinery

Compatible systems

Control systems requiring 24V DC coil contactors with spring-type connections

Also known as

Siemens 3RT1024-3BB40 Contactor SIRIUS 3RT1024-3BB40 Siemens Spring Terminal Contactor

Replaces / compatible with

This product is a phased-out item. The preferred successor is the Siemens SIRIUS 3RT2024-2BB40.

Technical note

Expert tip

Spring-type terminals on the 3RT1024-3BB40 can offer faster installation and improved resistance to vibration compared to screw terminals.

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Frequently asked questions

What is the main difference between the 3RT1024-1KB40 and 3RT1024-3BB40 contactors?

While both are Siemens SIRIUS 3RT1024 series 12A contactors with a 24V DC coil and Size S0, the 3RT1024-1KB40 features screw terminals and an integrated varistor, whereas the 3RT1024-3BB40 uses spring-type terminals for connection.