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Siemens 3RN2011-1BA30 Thermistor Motor Protection Relay - ATEX Approved

Siemens 3RN2011-1BA30 Thermistor Motor Protection Relay

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ManufacturerSiemens

Part number3RN2011-1BA30

Enclosure 22.5 mm

Terminals Screw

Contacts 2 CO

Supply Voltage (Us) 24 V AC/DC

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CAGE: 9NK75

ATEX approved for explosive atmospheres Manual/remote reset Wire-break and short-circuit monitoring 2 change-over contacts Screw terminals 24V AC/DC operation

Product description

The Siemens 3RN2011-1BA30 is a standard evaluation unit for thermistor motor protection, featuring a 22.5 mm enclosure and screw terminals. It offers two change-over (CO) contacts and operates at 24 V AC/DC. This model supports manual and remote RESET functions and is ATEX approved, making it suitable for use in potentially explosive atmospheres. It includes a test/RESET button, wire-break monitoring, short-circuit monitoring, and two LEDs for ready and tripped status indication.

This relay provides comprehensive protection for motors against overheating, with added safety features for hazardous environments. Its applications include hazardous industrial zones, chemical plants, and any area where ATEX certification is required for motor protection.

Stanlo Automation, a veteran-owned surplus industrial parts distributor, offers the Siemens 3RN2011-1BA30. We are committed to providing reliable automation components and excellent customer service. Count on Stanlo Automation for your industrial needs.

Technical specifications

Enclosure	22.5 mm
Terminals	Screw
Contacts	2 CO
Supply Voltage (Us)	24 V AC/DC
Reset	Manual/Remote RESET
Indicators	2 LEDs (Ready/Tripped)
Features	ATEX approval, wire-break monitoring, short-circuit monitoring

Common applications

Hazardous industrial zones

Chemical plants

ATEX environments

Motor protection

Automation

Explosive atmospheres

Compatible systems

PTC thermistors ATEX certified installations

Also known as

3RN2011-1BA30 Siemens Relay Siemens ATEX Motor Protection Relay

Replaces / compatible with

This relay is designed for critical motor protection in hazardous environments and can replace older ATEX-certified motor protection devices.

Technical note

Expert tip

The integrated wire-break and short-circuit monitoring provides an additional layer of safety for the motor's thermistor sensor circuit.

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Frequently asked questions

What does the ATEX approval on the Siemens 3RN2011-1BA30 signify?

The ATEX approval on the Siemens 3RN2011-1BA30 indicates that it is certified for use in potentially explosive atmospheres, such as those found in chemical plants or areas with flammable gases or dusts. This ensures its safe operation in hazardous industrial environments.