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Siemens 3UN8004 Tripping Unit for PTC Thermistors

Siemens 3UN8004 tripping unit for PTC thermistors.

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ManufacturerSiemens

Part number3UN8004

Type Tripping Unit

Design Open Type

Protection IP20

Input PTC Thermistor

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12-month warranty

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Veteran-owned

CAGE: 9NK75

PTC Thermistor Monitoring Overheat Protection IP20 Rated 220V AC Operation Open Type Design

Product description

The Siemens 3UN8004 is an open-type tripping unit designed for use with PTC (Positive Temperature Coefficient) thermistors. It operates on AC 50/60 Hz power supply at 220V and provides IP20 protection. This unit is crucial for monitoring motor winding temperatures to prevent overheating and damage.

This tripping unit is commonly applied in motor protection circuits across various industrial sectors, including manufacturing plants, pump stations, and HVAC systems, ensuring the longevity and safe operation of electric motors.

Stanlo Automation, a veteran-owned business, specializes in providing reliable surplus industrial parts like the Siemens 3UN8004. We help you maintain your equipment with readily available, quality components.

Technical specifications

Type	Tripping Unit
Design	Open Type
Protection	IP20
Input	PTC Thermistor
Power	AC 50/60 Hz 220V

Common applications

Motor Protection

Industrial Motors

Pump Stations

HVAC Systems

Manufacturing Equipment

Compatible systems

Various Industrial Motors Motor Control Panels Protection Relays

Also known as

Siemens PTC Tripping Unit 3UN8004 Motor Protection

Replaces / compatible with

Replaces older or faulty tripping units for PTC thermistor motor protection systems.

Technical note

Expert tip

Ensure proper wiring of PTC thermistors to the 3UN8004 for accurate temperature monitoring and reliable tripping.

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Frequently asked questions

What is the Siemens 3UN8004 tripping unit used for?

The Siemens 3UN8004 is an open-type tripping unit that monitors the temperature of electric motors via PTC thermistors. It is designed to shut down the motor if it overheats, protecting it from damage.