Schneider TeSys LRD LRD32 Thermal Overload Relay, 23–32A, Class 10A
Schneider Electric LRD32 is a differential thermal overload relay for motor protection, with an adjustable 23–32 A range and Class 10A tripping. It provides phase-failure sensitivity, one normally open and one normally closed signalling contact, and front stop/reset controls. It mounts below the compatible TeSys contactors listed in the specifications; separate rail or plate mounting requires the specified accessories. Short-circuit protection must be coordinated separately.
Key specifications
- Model: LRD32
- Range: TeSys LRD / TeSys Deca
- Product type: Differential thermal overload relay
- Thermal adjustment range: 23–32 A
- Trip class: Class 10A, IEC 60947-4-1
- Compatible contactors: LC1D25, LC1D32, LC1D38
- Power-circuit operational voltage: 690 V AC, 0–400 Hz, IEC 60947-4-1
- Power-circuit insulation voltage: 690 V IEC; 600 V UL/CSA
- Impulse withstand (Uimp): 6 kV
- Auxiliary contacts: 1 NO (97–98) + 1 NC (95–96)
- Signalling-contact operational rating: 1.5 A at 240 V AC-15; 0.1 A at 250 V DC-13
- Signalling thermal current (Ith): 5 A; not the motor setting range
- Phase-failure sensitivity: Trip at 130% of Ir in two phases with the third phase at zero, per manufacturer
- Front controls: Red stop button; blue reset button; test control
- Mounting: Under compatible contactor; rail/plate mounting with specified accessories
- Power terminals: Screw clamp: one flexible cable 1.5–10 mm² without ferrule; 1–6 mm² with ferrule; solid 1.5–10 mm²
- Control terminals: Screw clamp: two cables, 1–2.5 mm² each, per manufacturer terminal table
- Terminal torque: Power 2.5 N·m; control 1.7 N·m
- Dimensions (H × W × D): 66 × 45 × 70 mm
- Net weight: 0.124 kg
- Protection degree: IP20
- Operating ambient / compensation: −20 to +60 °C without derating
- Standards: EN/IEC 60947-4-1; EN/IEC 60947-5-1
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