Schneider LR9D5367 and LRD32C are 3‑pole differential thermal overload relays belonging to TeSys D series. They work with TeSys D contactors to deliver comprehensive motor protection. The devices detect overload current, phase loss and phase unbalance for three‑phase AC motors, cutting off control circuit to stop motor operation upon fault conditions. They are widely used inside electrical cabinets to prevent motor burnout caused by over‑current, phase failure and abnormal load fluctuation.
| Item | Specification |
|---|---|
| Model | LR9D5367 (Electronic type) / LRD32C (Thermal bimetallic type) |
| Brand | Schneider Electric |
| Series | TeSys D / TeSys Deca |
| Poles | 3‑Pole |
| Setting Current Range | LR9D5367: 60‑100 A; LRD32C: 23‑32 A |
| Trip Class | Class 10 |
| Main Circuit Rated Insulation Voltage | 1000 V |
| Auxiliary Contact | 1 NO + 1 NC |
| Auxiliary Contact Rating | 5 A / 240 V AC‑15 |
| Protection Degree | IP20 (cabinet‑installation) |
| Mounting | Plug‑on under contactor / DIN‑rail / screw mounting |
| Tripping Function | Overload, phase loss, phase unbalance protection |
| Operation Temperature | ‑20 ℃ ~ +70 ℃ |
| Weight | LR9D5367: approx. 1.1 kg; LRD32C: approx. 0.124 kg |
| Compliance Standard | IEC 60947‑4‑1, UL 508, CSA, RoHS, Green Premium |
Application Scenarios (Suggested image tags: motor‑control‑panel‑interior, teSys‑contactor‑overload‑assembly, industrial‑electrical‑cabinet, pump‑motor‑protection‑system)
Warehouse reference (Suggested image tags: electrical‑spare‑parts‑warehouse, automation‑component‑storage‑shelf, Schneider‑TeSys‑series‑stock) Stored as standard MRO electrical spare parts; keep dry storage condition. Widely stocked for project maintenance and equipment‑repair spare‑part backup.