Siemens AG Thermistor Protection Relay 3UN2100-0AN7
Siemens AG 3UN21 Thermistor Protection Relay (Part No. 3UN2100-0AN7) is a reliable motor protection relay designed to monitor PTC thermistor sensors and protect electric motors from overheating. It provides fast and accurate temperature monitoring, helping prevent motor damage, reduce downtime, and improve operational safety. Ideal for industrial automation, motor control panels, and machinery protection applications.
BRAND
Siemens
TYPE
Protection Relay
PART NO.
Thermistor Protection Relay 3UN2100-0AN7
MODEL
3UN2100-0AN7
Full Technical Specifications ▶
| Parameter | Value / Description |
|---|---|
| BRAND | Siemens |
| TYPE | Protection Relay |
| PART NO. | Thermistor Protection Relay 3UN2100-0AN7 |
| MODEL | 3UN2100-0AN7 |
| MANUFACTURER | Siemens AG |
| SUPPLY VOLTAGE | 220–240 V AC |
| SUPPLY FREQUENCY | 50/60 Hz |
| SENSOR INPUT | 1 PTC Thermistor Sensor Loop |
| RESET FUNCTION | Automatic Reset |
| OUTPUT CONTACT CONFIGURATION | 1 Normally Open (1 NO) + 1 Normally Closed (1 NC) |
| CONTACT RATING (AC15) | 6 A @ 120 V AC, 3 A @ 250 V AC, 1.5 A @ 400 V AC |
| FUSE PROTECTION | 6 A gL |
| STATUS INDICATION | READY LED, TRIPPED LED |
| TERMINAL TYPE | Screw Terminal |
| WIRE SIZE | 0.5–2.5 mm² (2 conductors), 0.5–4 mm² (1 conductor); AWG 20–14 / AWG 20–12 |
| TIGHTENING TORQUE | 0.8–1.2 Nm (7–11 lb•in) |
| MOUNTING TYPE | 35 mm DIN Rail Mount |
| STANDARD COMPLIANCE | IEC 34-11 Type A, VDE 0660 |
| CERTIFICATIONS | CE, UL Listed, CSA Certified, PTB Approved |
| APPLICATION | Motor thermistor protection, overheating protection of electric motors, pump protection, fan protection, conveyor systems, compressors, industrial machinery, marine automation and process control systems |
| MADE IN | Germany |
| REF NO | 1310 |
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