Description

Schneider LR9F5371 | TeSys LRF – electronic thermal overload relay – 132…220 A – class 10

Schneider LR9F5371 | TeSys LRF – Electronic Thermal Overload Relay, 132…220 A, Class 10

The Schneider LR9F5371 is a high-performance electronic thermal overload relay designed for the protection of large motors. It belongs to the TeSys LRF series, offering advanced features for precise motor protection and enhanced operational safety.

General Information:

  • Brand: Schneider Electric

  • Series: TeSys LRF

  • Model: LR9F5371

  • Product Type: Electronic Thermal Overload Relay

  • Current Range: 132 to 220 A

  • Trip Class: Class 10 (fast trip for standard motors)

Key Features:

  • Electronic Overload Protection: Ensures accurate motor protection by using electronic sensing

  • Wide Current Adjustment Range: 132–220 A for flexible protection across various applications

  • Phase Failure & Imbalance Detection: Reliable operation even under adverse electrical conditions

  • Trip Indication LED: Immediate visual feedback for easier troubleshooting

  • Manual & Auto Reset Options: Versatile resetting depending on your system’s needs

  • Auxiliary Contacts: Comes with 1 NO + 1 NC contacts for signaling and control circuits

  • Test Function: Built-in test feature to simulate tripping for maintenance and system checks

  • Compact Mounting Design: Easily attaches to TeSys F series contactors for a space-saving solution

Technical Specifications:

  • Adjustable Current Range: 132 to 220 A

  • Trip Class: 10 (standard protection response time)

  • Control Voltage: Independent of motor power line

  • Reset Options: Manual or Automatic

  • Auxiliary Contacts: 1 NO + 1 NC

  • Compatible Contactors: TeSys LC1F range

  • Conformity: IEC 60947-4-1 / IEC 60947-1

Applications:

  • Industrial Pumps and Fans

  • Large Compressors and Conveyors

  • Heavy Machinery in Manufacturing

  • Mining and Oil & Gas Facilities

  • Water Treatment and HVAC Systems

  • Motor Control Centers (MCCs)

Benefits:

  • Enhanced Accuracy: Electronic detection minimizes false trips and enhances motor protection

  • Versatile Integration: Designed to fit seamlessly with Schneider TeSys contactors

  • Efficient Troubleshooting: Built-in indicators and test functions reduce maintenance time

  • Flexible Installation: Supports multiple reset and wiring configurations

  • Long-Term Reliability: Built to handle high current and tough industrial environments

Additional information

brands

Schneider Electric

Specifications

Main
Range TeSys
Product name TeSys LRF
Device short name LR9F
Product or component type Electronic thermal overload relay
Relay application Motor protection
Product compatibility LC1F185...LC1F265
Network type AC
Thermal overload class Class 10 conforming to IEC 60947-4
Thermal protection adjustment range 132…220 A
Complementary
Network frequency 50/60 Hz
Mounting support Direct on contactor Plate
Tripping threshold 1.12 +/- 0.06 In tripping conforming to IEC 60947-4-1
Surge withstand 4 kV conforming to IEC 61000-4-5
Contacts type and composition 1 NO + 1 NC
[Ith] conventional free air thermal current 5 A for control circuit
[Ue] rated operational voltage 1000 V AC 50/60 Hz for power circuit conforming to VDE 0110 group C
[Ui] rated insulation voltage Power circuit: 1000 V AC conforming to IEC 60947-4
[Uimp] rated impulse withstand voltage 8 kV conforming to IEC 60947-1
Phase failure sensitivity Tripping in 4 s +/- 20 % conforming to IEC 60947-4-1
Reset Manual reset on front relay
Control type Dial white full-load current adjustment Test button red Push-button red reset Push-button stop
local signalling Trip indicator
Temperature compensation -20…70 °C
Current consumption <= 5 mA no-load
switching capacity for alarm 0...150 mA
Maximum voltage drop <2.5 V closed state
Connections - terminals Control circuit: screw clamp terminals 1 cable 0.75…2.5 mm² - cable stiffness: flexible - with cable end Control circuit: screw clamp terminals 1 cable 0.75…2.5 mm² - cable stiffness: solid Control circuit: screw clamp terminals 1 cable 0.75…4 mm² - cable stiffness: flexible - without cable end Control circuit: screw clamp terminals 2 cable 1…1.5 mm² - cable stiffness: flexible - with cable end Control circuit: screw clamp terminals 2 cable 1…2.5 mm² - cable stiffness: flexible - without cable end Control circuit: screw clamp terminals 2 cable 1 mm² - cable stiffness: solid Power circuit: lugs-ring terminals M10
Tightening torque Control circuit: 1.2 N.m on screw clamp terminals Power circuit: 35 N.m on screw clamp terminals
height 101 mm
Width 115 mm
Depth 123.5 mm
Net weight 0.95 kg
Environment
Standards IEC 60255-17 IEC 60947-4-1 IEC 60255-8 VDE 0660 EN 60947-4-1
product certifications UL CSA UKCA
Protective treatment TH
IP degree of protection IP20 conforming to IEC 60529 IP20 conforming to VDE 0106
Ambient air temperature for operation -20…55 °C conforming to IEC 60255-8
Ambient air temperature for storage -40…85 °C
Operating altitude <= 2000 m without derating
Fire resistance 850 °C conforming to IEC 60695-2-1
Mechanical robustness Shocks: 13 Gn for 11 ms conforming to IEC 60068-2-7 Vibrations 5...300 Hz: 2 GN conforming to IEC 60068-2-6
Dielectric strength 6 kV 50 Hz conforming to IEC 255-5
Electromagnetic compatibility Resistance to electrostatic discharge: 6 kV in indirect mode conforming to IEC 61000-4-2 Resistance to electrostatic discharge: 8 kV in air conforming to IEC 61000-4-2 Radiated radio-frequency electromagnetic field immunity test: 10 V/m conforming to IEC 61000-4-3 Fast transients immunity test: 2 kV conforming to IEC 61000-4-4
Packing Units
Unit Type of Package 1 PCE
Number of Units in Package 1 1
Package 1 Height 15.000 cm
Package 1 Width 16.500 cm
Package 1 Length 13.000 cm
Package 1 Weight 1.035 kg
Unit Type of Package 2 S04
Number of Units in Package 2 11
Package 2 Height 30 cm
Package 2 Width 40 cm
Package 2 Length 60 cm
Package 2 Weight 12.030 kg
Unit Type of Package 3 P06
Number of Units in Package 3 44
Package 3 Height 75.000 cm
Package 3 Width 60.000 cm
Package 3 Length 80.000 cm
Package 3 Weight 59.048 kg
Contractual warranty
Warranty 18 months

Main Document

Main Document

Data Sheet : LR9F5371

Main Document

Data Sheet : LR9F5371

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