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Siemens 3RA2120-1FA24-0BB4 Fuseless Motor Starter

Siemens 3RA2120-1FA24-0BB4 Direct-On-Line Motor Starter

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ManufacturerSiemens

Part number3RA2120-1FA24-0BB4

Type Load Feeder, Direct-On-Line

Manufacturer Siemens

Series SIRIUS 3RA21

Size S0

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Veteran-owned

CAGE: 9NK75

Fuseless Direct-On-Line Starting Size S0 24 V DC Coil Type of Coordination 2 Screw Terminal 1 NO + 1 NC Auxiliary Contacts

Product description

The Siemens 3RA2120-1FA24-0BB4 is a fuseless direct-on-line load feeder designed for motor starting and protection. It belongs to the SIRIUS 3RA21 series and features a size S0 rating, a current range of 3.50 to 5.00 A, and a 24 V DC coil. This unit is designed for installation on standard mounting rails and offers Type of Coordination 2.

This motor starter is suitable for a wide range of industrial applications, including motor control, pump systems, and conveyor belts. Its fuseless design and Type 2 coordination make it a safe and reliable choice for protecting motors and connected equipment in various manufacturing and process industries.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3RA2120-1FA24-0BB4. We provide competitive pricing and efficient service for all your industrial automation needs, ensuring minimal downtime for your critical operations.

Technical specifications

Type	Load Feeder, Direct-On-Line
Manufacturer	Siemens
Series	SIRIUS 3RA21
Size	S0
Current Range	3.50-5.00 A
Coil Voltage	24 V DC
Mounting	Standard Mounting Rail
Coordination Type	1 & 2
Breaking Capacity (Iq)	150 kA
Auxiliary Contacts	1 NO + 1 NC

Common applications

Motor Control Centers

Conveyor Systems

Pump Stations

HVAC Systems

Industrial Automation

Machine Tools

Compatible systems

Siemens LOGO! Siemens S7-1200 Siemens S7-1500 General industrial control panels

Also known as

Siemens 3RA2120 Starter Siemens Load Feeder S0 3RA2120 DOL Starter

Replaces / compatible with

This Siemens 3RA2120-1FA24-0BB4 is a direct replacement for older Siemens motor starters or compatible units within the SIRIUS 3RA21 family. It ensures seamless integration into existing control panels.

Technical note

Expert tip

This starter is designed for installation on standard mounting rails, offering flexibility in control panel design and assembly.

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Frequently asked questions

What is the Type of Coordination for the Siemens 3RA2120-1FA24-0BB4?

The Siemens 3RA2120-1FA24-0BB4 offers Type of Coordination 2. This means it provides reliable protection against short circuits for both the motor starter itself and the downstream components, enhancing system safety and reducing potential damage.