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Siemens 3RB2153-4FC2 SIRIUS Overload Relay - 50-200A, Size S6

Siemens 3RB2153-4FC2 SIRIUS overload relay for motor protection.

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ManufacturerSiemens

Part number3RB2153-4FC2

Current Setting 50...200 A

Size S6

Class 5...30E

Reset Manual/Automatic

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Motor protection Adjustable current Class 5-30E tripping Internal ground fault detection Busbar connection Manual/Automatic reset

Product description

The Siemens 3RB2153-4FC2 is a robust overload relay for motor protection, covering a wide current range of 50 to 200 A for Size S6 applications. It offers adjustable tripping classes from 5 to 30E and incorporates internal ground fault detection. This relay is designed for both contactor mounting and stand-alone installation, featuring busbar connections for the main circuit and screw terminals for the auxiliary circuit, with manual/automatic reset.

This relay is ideal for protecting larger motors in demanding industrial environments such as heavy machinery, large pump stations, and complex conveyor systems. The integrated ground fault detection adds an extra layer of safety and operational reliability.

Stanlo Automation, a veteran-owned distributor of surplus industrial parts, offers the Siemens 3RB2153-4FC2. Secure reliable motor protection components with confidence from our experienced team.

Technical specifications

Current Setting	50...200 A
Size	S6
Class	5...30E
Reset	Manual/Automatic
Installation	Contactor mounting/stand-alone
Main Circuit Connection	Busbar
Auxiliary Circuit Connection	Screw Terminal
Features	Internal ground fault detection

Common applications

Heavy machinery

Large motor protection

Pump stations

Conveyor systems

Industrial automation

Compatible systems

Compatible with Siemens Size S6 contactors and stand-alone installations

Also known as

Siemens 3RB2153-4FC2 relay SIRIUS overload relay S6

Replaces / compatible with

A high-capacity overload relay suitable for Siemens Size S6 contactors and stand-alone applications requiring busbar connections.

Technical note

Expert tip

The busbar connection on the 3RB2153-4FC2 ensures a robust and low-resistance main circuit connection for high-current applications.

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Frequently asked questions

Does the Siemens 3RB2153-4FC2 overload relay include ground fault detection?

Yes, the Siemens 3RB2153-4FC2 overload relay features integrated internal ground fault detection. This provides enhanced protection against earth leakage currents, improving system safety.