Schneider Electric LRD3357A66
MPNLRD3357A66
Active
LRD3357A66 - 37-50 AMP by SCHNEIDER ELECTRIC
$119.38Ref. price · indicative, final on quote
StockContact for availability
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
How we verify every order →Specifications
| Parameter | Value |
|---|---|
| Control type | Red push-button: stop Blue push-button: reset |
| Network type | DC AC |
| Product or component type | Differential thermal overload relay |
| Climatic withstand | conforming to IACS E10 |
| Voltage | Power circuit: 1000 V conforming to IEC 60947-4-1 Power circuit: 600 V conforming to CSA Power circuit: 600 V conforming to UL |
| [Ue] rated operational voltage | 1000 V AC 0...400 Hz for power circuit conforming to IEC 60947-4-1 |
| [Uimp] rated impulse withstand voltage | 6 kV conforming to IEC 60947-1 |
| Permissible current | 0.72 A at 500 V AC-15 for signalling circuit 0.06 A at 440 V DC-13 for signalling circuit |
| [Ith] conventional free air thermal current | 5 A for signalling circuit |
| Network frequency | 0...400 Hz |
| Phase failure sensitivity | Tripping current 130 % of Ir on two phase, the last one at 0 |
| IP degree of protection | IP20 conforming to IEC 60529 |
All specifications
| Parameter | Value |
|---|---|
| Mounting support | Plate, with specific accessories Rail, with specific accessories Under contactor |
| Connection pitch | 17.5 mm |
| Connections - terminals | Control circuit: screw clamp terminals 2 cable(s) 1...2.5 mm² flexible without cable end Control circuit: screw clamp terminals 2 cable(s) 1...2.5 mm² flexible with cable end Control circuit: screw clamp terminals 2 cable(s) 1...2.5 mm² solid without cable end Power circuit: lugs-ring terminals |
| Depth | 115 mm |
| Width | 70 mm |
| Height | 81 mm |
| Standards | EN/IEC 60947-4-1 EN/IEC 60947-5-1 UL 60947-4-1 UL 60947-5-1 CSA C22.2 No 60947-4-1 CSA C22.2 No 60947-5-1 GB/T 14048.4 GB/T 14048.5 |
| Range | TeSys |
| Flame retardance | V1 conforming to UL 94 |
| Device short name | LRD |
| Relay application | Motor protection |
| Tightening torque | Control circuit: 1.7 N.m - on screw clamp terminals Power circuit: 11.3 N.m - on lugs-ring terminals M10 |
| Tripping threshold | 1.14 +/- 0.06 Ir conforming to IEC 60947-4-1 |
| Dielectric strength | 2.2 kV at 50 Hz conforming to IEC 60947-1 |
| Mechanical robustness | Vibrations: 6 Gn conforming to IEC 60068-2-6 Shocks: 15 Gn for 11 ms conforming to IEC 60068-2-7 |
| Associated fuse rating | 4 A gG for signalling circuit 4 A BS for signalling circuit |
| Thermal overload class | Class 10A conforming to IEC 60947-4-1 |
| Temperature compensation | -20...60 °C |
| Auxiliary contact composition | 1 NO + 1 NC |
| Ambient air temperature for storage | -60...70 °C |
| Thermal protection adjustment range | 37...50 A |
| Ambient air temperature for operation | -20...60 °C without derating conforming to IEC 60947-4-1 |
MPN
LRD3357A66