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Siemens 3RA2120-4AA26-0BB4 Direct-On-Line Motor Starter

Siemens 3RA2120-4AA26-0BB4 Motor Starter

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ManufacturerSiemens

Part number3RA2120-4AA26-0BB4

Type Load Feeder, Direct-On-Line

Manufacturer Siemens

Series SIRIUS 3RA21

Size S0

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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 Standard Mounting Rail

Product description

The Siemens 3RA2120-4AA26-0BB4 is a fuseless direct-on-line load feeder from the SIRIUS 3RA21 series. It is rated for Size S0, with a current range of 10 to 16 A and a 24 V DC coil. Designed for installation on standard mounting rails, this starter features Type of Coordination 2 and a breaking capacity of 150 kA.

This motor starter is ideal for applications requiring robust motor protection and control in industrial settings, such as manufacturing plants, material handling systems, and processing facilities. Its Type 2 coordination ensures effective protection for both the motor and the electrical installation.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3RA2120-4AA26-0BB4. We provide reliable access to high-quality industrial automation components, helping you maintain operational efficiency with cost-effective solutions.

Technical specifications

Type	Load Feeder, Direct-On-Line
Manufacturer	Siemens
Series	SIRIUS 3RA21
Size	S0
Current Range	10-16 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

Manufacturing Plants

Material Handling

Processing Facilities

Motor Control Centers

Industrial Machinery

Automation Systems

Compatible systems

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

Also known as

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

Replaces / compatible with

This Siemens 3RA2120-4AA26-0BB4 starter is suitable for replacing older Siemens SIRIUS 3RA21 series starters or other compatible DOL starters in the 10-16A range, offering reliable performance.

Technical note

Expert tip

This starter is designed to be mounted on standard DIN rails, facilitating easy and secure installation within industrial control panels.

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Frequently asked questions

What type of protection does the Siemens 3RA2120-4AA26-0BB4 offer?

The Siemens 3RA2120-4AA26-0BB4 provides Type of Coordination 2 protection. This ensures that in the event of a short circuit, the starter itself and the connected motor are reliably protected, preventing extensive damage and minimizing downtime.