The JR28S-93 thermal overload relay from CNC Electric is designed to protect motors and circuits operating at AC 50Hz, 380V from overload, phase failure, and locked-rotor conditions. With a current setting range of 80–93A, it’s ideal for high-power motor applications in demanding industrial environments.
This relay includes features such as manual or automatic reset, temperature compensation, and phase loss protection. It is equipped with NO and NC auxiliary contacts, a test button, and a stop button for convenient operation. Safety is reinforced with a finger protection shield and a mistake-proof blocking device. The unit supports stack or separate mounting and complies with IEC 60947-4-1 standards.
TECHNICAL DETAILS:
| Parameter | Value |
| Model | JR28S-93 |
| Current Adjustment Range | 80–93A |
| Rated Operational Voltage (Ue) | AC380V |
| Rated Insulation Voltage (Ui) | AC660V |
| Rated Frequency | 50Hz |
| Tripping Class | Class 10A |
| Auxiliary Contact Ratings | AC-15: Ue = 380V, Ie = 0.95A |
| Main Circuit Ratings | Ui = 380V, Ith = 5A |
| Impulse Withstand Voltage (Uimp) | 6kV |
| Pollution Degree | Class 3 |
| Installation Category | Class III |
| Mounting Type | Stack (Z) or Separate (F) |
| Ambient Temperature Range | –5°C to +40°C |
| Altitude Limit | ≤ 2000m |
| Humidity | ≤ 50% at 40°C; ≤ 90% at 20°C |
| Compliance | CE, IEC 60947-4-1 |
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