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Siemens 3RN2011-2BA30 Thermistor Motor Protection Relay - Spring Terminals/ATEX

Siemens 3RN2011-2BA30 Thermistor Motor Protection Relay

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ManufacturerSiemens

Part number3RN2011-2BA30

Enclosure 22.5 mm

Terminals Spring-loaded

Contacts 2 CO

Supply Voltage (Us) 24 V AC/DC

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CAGE: 9NK75

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

Product description

The Siemens 3RN2011-2BA30 is a standard evaluation unit for thermistor motor protection, featuring a 22.5 mm enclosure and spring-loaded terminals for easy installation. 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 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 robust protection for motors against overheating, with enhanced safety features for hazardous industrial environments. Its applications are ideal for areas with a risk of gas or dust explosions, such as chemical plants, refineries, and mining operations.

Stanlo Automation, a veteran-owned supplier of surplus industrial automation parts, offers the Siemens 3RN2011-2BA30. We are committed to providing quality components and exceptional value. Trust Stanlo Automation for your industrial automation needs.

Technical specifications

Enclosure	22.5 mm
Terminals	Spring-loaded
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

Explosive atmospheres

Chemical plants

Refineries

Mining operations

ATEX environments

Compatible systems

PTC thermistors ATEX certified installations

Also known as

3RN2011-2BA30 Siemens Relay Siemens Spring Terminal ATEX Relay

Replaces / compatible with

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

Technical note

Expert tip

The spring-loaded terminals offer a secure and vibration-resistant connection, essential for reliable performance in demanding industrial settings, especially in potentially explosive atmospheres.

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Frequently asked questions

What are the benefits of manual/remote reset on the Siemens 3RN2011-2BA30?

The manual/remote reset function on the Siemens 3RN2011-2BA30 allows for controlled system restarts after a fault. This is crucial in hazardous environments where an automatic reset could be unsafe, providing an operator with the ability to verify conditions before re-energizing the motor.