Description of the LRD3361 THERMAL OVERLOAD Relay 55-70A FITS LC1D80-D95 Schneider

Introduction:

The thermal overload relay LRD3361 from Schneider Electric is a reliable and economical device designed to protect motors against temporary and prolonged overloads, ensuring optimal operation.

• Type of Relay: LRD3361 Thermal Overload Relay
• Fault Current Classification: Class 10A according to IEC 60947-4-1
• Thermal Protection Adjustment Range: 55…70 A
• Nominal Isolation Voltage [Ui]: Supply circuit, 600 V according to CSA and ULC; Supply circuit: 690 V according to IEC 60947-4-1
• Fault Current Trip Threshold: 1.14 +/- 0.06 Ir according to IEC 60947-4-1
• Auxiliary Contacts: 1NA + 1NC
• Thermal Current Rating [Ith]: 5 A for signaling circuit, 0.72 A at 500 V AC-15, 0.06 A at 440 V DC-13 for signaling circuit
• Nominal Operating Voltage [Ue]: 1000 VAC 0...400 Hz for supply circuit according to IEC 60947-4-1; 4 A gG and 4 A BS for signaling circuit
• Nominal Surge Voltage [Uimp]: 6 kV
• Phase Failure Sensitivity: Trip current 130% of Ir in phases, the last at 0
• Pushbuttons: Red pushbutton - stop; Blue pushbutton - reset
• Temperature Compensation: -20…60 °C
• Supply Circuit: Screw terminals for 1 cable(s) 4…35 mm² flexible without terminal, with terminal and solid without terminal
• Control Circuit: Screw terminals for 2 cables(s) 1…2.5 mm² flexible without terminal, with terminal and solid without terminal; 1.7 N.m in screw terminals of the supply circuit
• Nominal Flame Resistance Voltage: V1 according to UL 94
• Vibrations and Impacts: