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Siemens 3RA2120-4BA26-0BB4 Motor Starter, Type 1 Coordination

Siemens 3RA2120-4BA26-0BB4 Motor Starter Type 1

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ManufacturerSiemens

Part number3RA2120-4BA26-0BB4

Type Load Feeder, Direct-On-Line

Manufacturer Siemens

Series SIRIUS 3RA21

Size S0

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

Product description

The Siemens 3RA2120-4BA26-0BB4 is a fuseless direct-on-line load feeder from the SIRIUS 3RA21 series, designed for motor starting and protection. It is rated for Size S0, with a current range of 13 to 20 A and a 24 V DC coil. This starter is intended for installation on standard mounting rails and provides Type of Coordination 1.

This motor starter is suitable for various industrial applications, including motor control in manufacturing, automation, and processing industries where Type 1 coordination is specified. Its robust design ensures reliable operation and protection for motors up to 20 A.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3RA2120-4BA26-0BB4. We provide a reliable source for industrial automation components, ensuring you can find the parts you need to keep your systems running efficiently.

Technical specifications

Type	Load Feeder, Direct-On-Line
Manufacturer	Siemens
Series	SIRIUS 3RA21
Size	S0
Current Range	13-20 A
Coil Voltage	24 V DC
Mounting	Standard Mounting Rail
Coordination Type	1
Breaking Capacity (Iq)	150 kA
Auxiliary Contacts	1 NO + 1 NC

Common applications

Industrial Manufacturing

Automation Systems

Processing Industries

Motor Control

Material Handling

Factory Automation

Compatible systems

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

Also known as

Siemens 3RA2120 Starter Siemens S0 Starter Type 1 3RA2120 Load Feeder

Replaces / compatible with

This Siemens 3RA2120-4BA26-0BB4 starter is designed to replace older Siemens SIRIUS 3RA21 series starters or other compatible DOL starters in the 13-20A range that require Type 1 coordination.

Technical note

Expert tip

When using Type 1 coordination, ensure an appropriately rated overload relay is selected and properly wired in conjunction with this starter for comprehensive motor protection.

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Frequently asked questions

What is Type 1 Coordination for the Siemens 3RA2120-4BA26-0BB4?

Type 1 Coordination for the Siemens 3RA2120-4BA26-0BB4 means that in case of a short circuit, the starter may be damaged, but it will safely disconnect the circuit, protecting the rest of the system. It is typically used with separate overload relays.