LRD143 Schneider Electric Industrial Automation Components

Schneider Electric LRD143 Schneider Electric LRD143 is a differential thermal overload relay designed for direct connection to a contactor with outgoing cables and control circuit connections utilizing spring-type fast connections. This 3-pole device offers protection functions classified under Class 10A, with a rated current range of 7-10 A. It features protection settings for thermal overload within the same range. The LRD143 includes 1 Normally Open (NO) auxiliary contact and 1 Normally Closed (NC) auxiliary contact. It is rated for a voltage of up to 690 V AC (0-400Hz) between phases, with a minimum operating current of 7 A and a maximum of 10 A.

Part#:LRD143

Manufacturer:Schneider Electric

Product Lifecycle:Active

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Schneider Electric LRD143 is a differential thermal overload relay designed for direct connection to a contactor with outgoing cables and control circuit connections utilizing spring-type fast connections. This 3-pole device offers protection functions classified under Class 10A, with a rated current range of 7-10 A. It features protection settings for thermal overload within the same range. The LRD143 includes 1 Normally Open (NO) auxiliary contact and 1 Normally Closed (NC) auxiliary contact. It is rated for a voltage of up to 690 V AC (0-400Hz) between phases, with a minimum operating current of 7 A and a maximum of 10 A.

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Product Details

Product Compatibility
LC1D12 LC1D09 LC1D18 LC1D25 LC1D38 LC1D32
Mounting Support
Plate, with specific accessories Rail, with specific accessories Under contactor
Connections - Terminals
Control circuit spring terminals 1 0.00…0.00 in² (1…2.5 mm²) solid without cable end Control circuit spring terminals 1 0.00…0.00 in² (1…2.5 mm²) flexible without cable end Power circuit spring terminals 1 0.00…0.01 in² (1.5…4 mm²) flexible with
[Ui] Rated Insulation Voltage
Power circuit 600 V CSA Power circuit 600 V UL Power circuit 690 V IEC 60947-4-1
Permissible Current
3 A 120 V AC-15 signalling circuit 0.22 A 125 V DC-13 signalling circuit
Associated Fuse Rating
4 A gG signalling circuit 4 A BS signalling circuit
Control Type
Red push-button stop Blue push-button reset
Network Type
AC DC
Net Weight
0.31 lb(US) (0.14 kg)
Depth
2.83 in (72 mm)
Temperature Compensation
-4…140 °F (-20…60 °C)
Width
1.77 in (45 mm)
Height
3.66 in (93 mm)
[Ue] Rated Operational Voltage
690 V AC 0...400 Hz power circuit IEC 60947-4-1
[Ith] Conventional Free Air Thermal Current
5 A signalling circuit
Phase Failure Sensitivity
Tripping current 130 % of Ir on two phase, the last one at 0
[Uimp] Rated Impulse Withstand Voltage
6 kV
Auxiliary Contact Composition
1 NO + 1 NC
Tripping Threshold
1.14 +/- 0.06 Ir IEC 60947-4-1
Network Frequency
0...400 Hz

Product Name

TeSys LRD

Thermal Overload Class

Class 10A IEC 60947-4-1

Range

TeSys

Relay Application

Motor protection

Product Or Component Type

Differential thermal overload relay

Device Short Name

LRD

Thermal Protection Adjustment Range

7…10 A

Product condition

ORIGINAL PACKAGING

SURPLUS ORIGINAL PACKAGING - 100% unused and in original packaging

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