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Siemens 3UN2115-0DN2 PTC Thermistor Tripping Unit

Siemens 3UN2115-0DN2 PTC Thermistor Tripping Unit with IP20 protection.

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ManufacturerSiemens

Part number3UN2115-0DN2

Type PTC Thermistor Tripping Unit

Protection IP20

Reset Manual

Contacts 2 Changeover

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PTC Thermistor Protection Increased Interference Suppression IP20 Rated Manual Reset Dual LED Indicators 2 Changeover Contacts

Product description

The Siemens 3UN2115-0DN2 is a PTC thermistor tripping unit designed for motor protection. It features increased interference suppression and an IP20 rating, ensuring reliable operation in industrial environments. The unit includes a manual reset function, monostable operation, two LEDs for status indication, and two changeover contacts suitable for AC 220V at 50/60Hz.

This tripping unit is essential for safeguarding motors against thermal overload, providing a critical layer of protection in manufacturing and industrial automation applications. Its design focuses on reliability and operational efficiency.

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Technical specifications

Type	PTC Thermistor Tripping Unit
Protection	IP20
Reset	Manual
Contacts	2 Changeover
Voltage	AC 220V 50/60Hz
Features	Increased Interference Suppression, 2 LEDs

Common applications

Motor Protection

Industrial Automation

Pump Controls

Conveyor Systems

HVAC Systems

Manufacturing Equipment

Compatible systems

AC 220V systems

Also known as

Siemens Motor Tripping Unit 3UN2115-0DN2 Relay PTC Protection Relay

Replaces / compatible with

This tripping unit is a direct replacement for older Siemens PTC thermistor units and can be used in various motor control circuits. Its successor is listed as 3RN1013-1BW10.

Technical note

Expert tip

Ensure the correct PTC thermistor probes are used with this unit for accurate motor temperature monitoring and protection.

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Frequently asked questions

What is the reset type and contact configuration of the Siemens 3UN2115-0DN2 tripping unit?

The Siemens 3UN2115-0DN2 features a manual reset and is equipped with two changeover contacts, making it versatile for various motor protection circuit designs.