The Siemens 3RN1000-1AB00 is a thermistor motor protection relay engineered to provide accurate temperature monitoring and protection for motors equipped with PTC sensors. It detects overtemperature conditions in motor windings and triggers control circuit disconnection to prevent damage.

This relay belongs to the SIRIUS series, known for its reliability and compatibility with various Siemens control systems. Its compact design makes it ideal for use in control panels, automation systems, and industrial machinery where motor safety is critical.

Features:

• Brand: Siemens

• Model: 3RN1000-1AB00

• Type: Thermistor Motor Protection Relay

• Rated control supply voltage: 24–240 V AC/DC

• 1 changeover contact (relay output)

• DIN rail mounting for easy installation

• Provides protection for motors with built-in PTC sensors

• Compact, reliable, and maintenance-free design

Applications:

• Motor temperature monitoring

• Industrial automation systems

• Control panels and electrical enclosures

• Machinery and process control

Benefits:

• Prevents costly motor damage

• Quick and easy installation

• Universal voltage range

• High reliability and long service life

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