LRD22
Schneider Electric LRD22 TeSys D thermal overload relay 16-24 A class 10A, 1 NO + 1 NC. The Schneider Electric LRD22 is a TeSys Deca (TeSys D) differential thermal overload relay for three-phase motor protection, with a thermal protection adjustment range of 16…24 A and trip class 10A to IEC 60947-4-1. The LRD22 is temperature compensated from -20 to 60 °C, is sensitive to phase failure and carries a 1 NO + 1 NC auxiliary contact set for tripping the contactor coil and signalling a fault. Rated 690 V AC for the power circuit with 6 kV impulse withstand and IP20 protection, it mounts directly under TeSys D contactors (LC1D25, LC1D32, LC1D38) or on a plate or DIN rail with the appropriate accessory, and uses screw clamp terminals. This Schneider Electric overload relay is specified for pump, fan, conveyor and compressor starters in cement, oil and gas, petrochemical, water treatment, food and beverage, textile and building services applications.
Details
- Brand: Schneider Electric
- Part number: LRD22
- Series: TeSys D
- Category: Overload Relay
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Specifications
- Depth
- 70 mm
- Width
- 45 mm
- Height
- 66 mm
- Standards
- EN/IEC 60947-4-1, EN/IEC 60947-5-1, UL 60947-4-1
- Net weight
- 0.124 Kg
- Control type
- Red push-button: stop; Blue push-button: reset
- Product name
- TeSys LRD
- Mounting support
- Plate, with specific accessories; Rail, with specific accessories; Under contactor
- Range of product
- TeSys Deca
- Device short name
- LRD
- Network frequency
- 0...400 Hz
- Relay application
- Motor protection
- Tightening torque
- 1.7 N.m - on screw clamp terminals
- Tripping threshold
- 1.14 +/- 0.06 Ir conforming to IEC 60947-4-1
- Permissible current
- 1.5 A at 240 V AC-15 for signalling circuit; 0.1 A at 250 V DC-13 for signalling circuit
- Product compatibility
- LC1D25, LC1D32, LC1D38
- Thermal overload class
- Class 10A conforming to IEC 60947-4-1
- Connections - terminals
- Power circuit: screw clamp terminals 1 cable 1.5…10 mm² flexible without cable end; Control circuit: screw clamp terminals 2 cables 1…2.5 mm²
- IP degree of protection
- IP20 conforming to IEC 60529
- Manufacturer part number
- LRD22
- Temperature compensation
- -20…60 °C
- Phase failure sensitivity
- Tripping current 130 % of Ir on two phase, the last one at 0
- Product or component type
- Differential thermal overload relay
- Auxiliary contact composition
- 1 NO + 1 NC
- [Ui] rated insulation voltage
- Power circuit: 690 V conforming to IEC 60947-4-1
- [Ue] rated operational voltage
- 690 V AC 0...400 Hz for power circuit conforming to IEC 60947-4-1
- Thermal protection adjustment range
- 16…24 A
- Ambient air temperature for operation
- -20…60 °C without derating conforming to IEC 60947-4-1
- [Uimp] rated impulse withstand voltage
- 6 kV
- [Ith] conventional free air thermal current
- 5 A for signalling circuit