LRD350 | TeSys Deca, thermal overload relay, 37 to 50 A, class 10A, EVERLINK | SQUARE D
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LRD350 | TeSys Deca, thermal overload relay, 37 to 50 A, class 10A, EVERLINK | SQUARE D

SQUARE D | LRD350
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SQUARE D LRD350 Documents

Overview

Details for LRD350

The LRD350 overload relay from SQUARE D is a vital component in protecting industrial electrical systems from damage caused by excessive current flow. It is designed to trip and interrupt the circuit when current exceeds a predetermined level, safeguarding downstream equipment and preventing costly downtime. This overload relay boasts a wide operating range of 37 to 50 amps, ensuring compatibility with various electrical systems. It features a manual reset operation, allowing for quick and easy restoration of the circuit after a fault condition. The compact design of this overload relay makes it suitable for installation in limited spaces within electrical panels. Its rugged construction ensures reliable performance in demanding industrial environments. Our HVAC supply store offers fast shipping and competitive pricing on the LRD350 overload relay, making it a reliable and cost-effective solution for your industrial electrical protection needs. TeSys LRD overload relays are designed to be used with TeSys D contactors to make a motor starter. This overload relay can be used with 40 amp through 65 amp TeSys D contactors. These differential thermal overload relays detect over currents in the lines to the motor. When an overcurrent is detected the overload relay working with the contactor will disconnect the power to the motor. This will minimize the damage to the motor windings. This overload relay has an adjustable trip current rating of 37 to 50 amperes. This trip current rating is calibrated per Class 10A. This overload relay uses EVERLINK termnals in place of the standard terminals.

Specifications

range
TeSys;TeSys Deca
product name
TeSys LRD;TeSys Deca
Product or Component Type
Differential thermal overload relay
device short name
LRD
relay application
Motor protection
Product Compatibility
LC1D65A;LC1D50A;LC1D40A
network type
DC;AC
thermal overload class
Class 10A IEC 60947-4-1
thermal protection adjustment range
37…50 A
[Ui] rated insulation voltage
Power circuit 600 V CSA;Power circuit 600 V UL;Power circuit 690 V IEC 60947-4-1
Network Frequency
0...400 Hz
mounting support
Plate;with specific accessories;Rail;with specific accessories;Under contactor
tripping threshold
1.14 +/- 0.06 Ir IEC 60947-4-1
auxiliary contact composition
1 NO + 1 NC
[Ith] conventional free air thermal current
5 A signalling circuit
permissible current
0.95 A 380 V AC-15 signalling circuit;0.06 A 440 V DC-13 signalling circuit
[Ue] rated operational voltage
690 V AC 0...400 Hz power circuit IEC 60947-4-1
associated fuse rating
4 A gG signalling circuit;4 A BS signalling circuit
[Uimp] rated impulse withstand voltage
6 kV
phase failure sensitivity
Tripping current 130 % of Ir on two phase;the last one at 0
control type
Red push-button stop;Blue push-button reset
temperature compensation
-4…140 °F (-20…60 °C)
connections - terminals
Control circuit screw clamp terminals 2 0.00…0.00 in² (1…2.5 mm²) flexible without cable end;Control circuit screw clamp terminals 2 0.00…0.00 in² (1…2.5 mm²) flexible with cable end;Control circuit screw clamp terminals 2 0.00…0.00 in² (1…2.5 mm²) solid without cable end;Power circuit EverLink BTR screw connectors 1 0.00…0.05 in² (1…35 mm²) flexible without cable end;Power circuit EverLink BTR screw connectors 1 0.00…0.05 in² (1…35 mm²) flexible with cable end;Power circuit EverLink BTR screw connectors 1 0.00…0.05 in² (1…35 mm²) solid without cable end
tightening torque
Control circuit 15.05 lbf.in (1.7 N.m) screw clamp terminals;Power circuit 44.25 lbf.in (5 N.m) EverLink BTR screw connectors
Height
2.76 in (70 mm)
Width
2.17 in (55 mm)
Depth
4.84 in (123 mm)
Net Weight
0.83 lb(US) (0.375 kg)
climatic withstand
IACS E10
IP degree of protection
IP20 conforming to IEC 60529
ambient air temperature for operation
-4…140 °F (-20…60 °C) without derating IEC 60947-4-1
Ambient Air Temperature for Storage
-76…158 °F (-60…70 °C)
flame retardance
V1 conforming to UL 94
mechanical robustness
Shocks15 Gn for 11 ms IEC 60068-2-7;Vibrations4 gn IEC 60068-2-6
dielectric strength
1.89 kV 50 Hz IEC 60947-1
Standards
EN/IEC 60947-4-1;EN/IEC 60947-5-1;UL 60947-4-1;UL 60947-5-1;CSA C22.2 No 60947-4-1;CSA C22.2 No 60947-5-1;EN 50495
Product Certifications
IEC;UL;CSA;CCC;EAC;DNV-GL;RMRS;EU-RO MR;LROS (Lloyds register of shipping);ATEX INERIS;UKCA
Category
22347-CONTACTOR;D-LINE;OVERLOADS-NEW
Discount Schedule
I12
GTIN
3389119215503
Returnability
Yes
Country of origin
FR
Unit Type of Package 1
PCE
Number of Units in Package 1
1
Package 1 Height
2.52 in (6.4 cm)
Package 1 Width
4.13 in (10.5 cm)
Package 1 Length
5.39 in (13.7 cm)
Package 1 Weight
13.90 oz (394.0 g)
Unit Type of Package 2
S02
Number of Units in Package 2
13
Package 2 Height
5.91 in (15.0 cm)
Package 2 Width
11.81 in (30.0 cm)
Package 2 Length
15.75 in (40.0 cm)
Package 2 Weight
12.13 lb(US) (5.504 kg)
Unit Type of Package 3
P06
Number of Units in Package 3
208
Package 3 Height
30.31 in (77.0 cm)
Package 3 Width
31.50 in (80.0 cm)
Package 3 Length
23.62 in (60.0 cm)
Package 3 Weight
212.89 lb(US) (96.564 kg)
Warranty
18 months

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