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Siemens 3UN8002 Tripping Unit

Siemens 3UN8002 Tripping Unit for PTC thermistors, IP20 rated.

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ManufacturerSiemens

Part number3UN8002

Type Tripping Unit, Open Type

Protection IP20

For PTC Thermistor

Frequency AC 50/60Hz

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12-month warranty

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Veteran-owned

CAGE: 9NK75

PTC Thermistor Monitoring Open Type Design IP20 Protection 50/60Hz Operation 110-115V AC Voltage Motor Overload Protection

Product description

The Siemens 3UN8002 is an open-type tripping unit designed for use with PTC thermistors. It offers IP20 protection and operates on AC power at 50/60 Hz with a voltage rating of 110-115V. This unit provides essential protection for motor circuits against overloads and thermal damage.

This tripping unit is crucial for safeguarding electric motors in various industrial applications, including pumps, fans, conveyors, and machine tools. Its role is to monitor motor temperature via PTC thermistors and initiate a shutdown to prevent damage from overheating or sustained overload conditions.

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Technical specifications

Type	Tripping Unit, Open Type
Protection	IP20
For	PTC Thermistor
Frequency	AC 50/60Hz
Voltage	110,115V

Common applications

Motor Protection

Pumps

Fans

Conveyors

Machine Tools

Industrial Control Panels

Compatible systems

Compatible with Siemens motor control systems and PTC thermistors.

Also known as

Siemens 3UN8002 3UN8002 Tripping Unit Siemens Motor Protection Relay

Replaces / compatible with

This part is a specific model and not typically listed as a direct replacement for an older part number. Please verify compatibility with your existing system.

Technical note

Expert tip

Ensure the PTC thermistors are correctly wired to the 3UN8002 unit for accurate thermal monitoring and protection.

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Frequently asked questions

What is the Siemens 3UN8002 tripping unit used for?

The Siemens 3UN8002 is an IP20 rated tripping unit designed for open-type applications, specifically for use with PTC thermistors to protect electric motors from thermal overload.