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Siemens 3RN2011-1BW30 Thermistor Motor Protection Relay

Siemens 3RN2011-1BW30 Thermistor Motor Protection Relay with 2 C/O contacts.

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ManufacturerSiemens

Part number3RN2011-1BW30

Enclosure 22.5 mm

Terminals Screw

Contacts 2 Changeover

Supply Voltage (Us) 24-240 V AC/DC

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Thermistor motor protection 22.5mm enclosure width Screw terminal connections Manual/remote reset ATEX approved Wire-break monitoring

Product description

The Siemens 3RN2011-1BW30 is a standard evaluation unit for thermistor motor protection. It features a slim 22.5mm enclosure with screw terminals and provides 2 changeover contacts. This relay operates with a supply voltage of 24V to 240V AC/DC and includes manual/remote reset functionality, ATEX approval, and two LEDs for status indication (ready/tripped).

Ideal for use in motor control applications across various industries, including manufacturing, material handling, and water treatment, this relay helps prevent motor damage due to overheating or short circuits. Its wire-break and short-circuit monitoring capabilities enhance operational safety and reliability.

Source your Siemens 3RN2011-1BW30 from Stanlo Automation, a veteran-owned distributor committed to providing high-quality surplus industrial automation parts with exceptional customer service and fast shipping.

Technical specifications

Enclosure	22.5 mm
Terminals	Screw
Contacts	2 Changeover
Supply Voltage (Us)	24-240 V AC/DC
Reset	Manual/Remote
LEDs	Ready/Tripped
Monitoring	Wire-break, Short-circuit
Approvals	ATEX

Common applications

Motor control panels

Industrial machinery

Pump control systems

HVAC systems

Conveyor systems

Process automation

Compatible systems

Compatible with Siemens motor protection systems and various industrial control panels.

Also known as

Siemens 3RN2011-1BW30 relay Siemens motor protection relay

Replaces / compatible with

This relay is designed for direct replacement of older Siemens thermistor protection relays with similar functionalities and form factors.

Technical note

Expert tip

Ensure proper wiring of thermistor sensors to the T1/T2 terminals for accurate motor temperature monitoring and protection.

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Frequently asked questions

What voltage range does the Siemens 3RN2011-1BW30 motor protection relay support?

The Siemens 3RN2011-1BW30 motor protection relay supports a wide supply voltage range of 24V to 240V AC/DC, making it versatile for various power configurations.