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Homeโ€บOther Automation Equipmentโ€บMotor Safety with SIEMENS 3UN8004 PTC Thermistor Relay
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Motor Safety with SIEMENS 3UN8004 PTC Thermistor Relay

3UN8004
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SIEMENS PTC Thermistor Motor Protection Relay 3UN8004

Manufacturer SIEMENS
Part Number 3UN8004
Power Supply 690V AC
Made in Germany
Mass 0.15 kg
Size 45mm x 45mm x 80mm
$1 6 months
Approvals CE, UL, CSA, IEC 60947-8
Catalog Number 3UN8004-1AA00
Package Contents 1x PTC Thermistor Motor Protection Relay, 1x Mounting Bracket, 1x User Manual
Trip Class Class 10A / Class 20 / Class 30
Reset Mode Automatic / Manual
Operating Temperature -25ยฐC to +60ยฐC
Output Contacts 1 NO + 1 NC
Rated Insulation Voltage 690V AC
PTC Sensor Connection Up to 6 PTC thermistors in series
High-reliability motor protection for industrial automation, ensuring early detection of overheating in motors and transformers.
Key benefits: Prevents motor burnout, reduces downtime, compatible with Siemens SIRIUS system, robust design for harsh environments.
Typical applications: Motor protection in pumps, fans, compressors, conveyors, and HVAC systems in manufacturing plants.
Lifecycle: Active production, with long-term availability for industrial maintenance and new installations.

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