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  11. Thermal Overload Relay, 1NC/1NO, 37 A Min current, 50 A Max current, 1000V AC
Square D Thermal Overload Relay, 1NC/1NO, 37 A Min current, 50 A Max current, 1000V AC LRD3357 - main

Thermal Overload Relay, 1NC/1NO, 37 A Min current, 50 A Max current, 1000V AC

  • Mfr # LRD3357

  • Zoro # G309982011

product price: $152.99
/ea
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Key Features

Auxiliary Contact Form
1NC/1NO
Minimum Overload Relay Current Setting
37 A
Maximum Overload Relay Current Setting
50 A
Trip Class
10A
Overload Protection Type
Thermal
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Specifications

Product Information

MFR #
LRD3357
Zoro #
G309982011
UPC #
-
Country of Origin
Unknown

Dimensions

Depth
4.5 in
Height
3.2 in
Width
2.8 in

Details

Item
Thermal Overload Relay
Auxiliary Contact Form
1NC/1NO
Minimum Overload Relay Current Setting
37 A
Maximum Overload Relay Current Setting
50 A
Trip Class
10A
Overload Protection Type
Thermal
Maximum Voltage Rating
1000V AC
Standards
CSA,UL 489
Application
Motor protection
Control Type
Red push-button stop; Blue push-button reset
Dielectric Strength
2.2 kV 50 Hz IEC 60947-1
Relay Application
Motor protection
Product Compatibility
LC1D95; LC1D80
Temperature Compensation
-4 to 140°F (-20 to 60°C)
IP Degree Of Protection
IP20 conforming to IEC 60529
Network Type
DC; AC
Connections - Terminals
Power circuit screw clamp terminals 1 0.01 to 0.05 in² (4 to 35 mm²) flexible without cable end; Power circuit screw clamp terminals 1 0.01 to 0.05 in² (4 to 35 mm²) flexible with cable end; Power circuit screw clamp terminals 1 0.01 to 0.05 in² (4 to 35 mm²) solid without cable end; Control circuit screw clamp terminals 2 0.00 to 0.00 in² (1 to 2.5 mm²) flexible without cable end; Control circuit screw clamp terminals 2 0.00 to 0.00 in² (1 to 2.5 mm²) flexible with cable end; Control circuit screw clamp terminals 2 0.00 to 0.00 in² (1 to 2.5 mm²) solid without cable end
Climatic Withstand
IACS E10
Tripping Threshold
1.14 +/- 0.06 Ir IEC 60947-4-1
Conventional Free Air Thermal Current
5 A signalling circuit
Product Or Component Type
Differential thermal overload relay
Flame Retardance
V1 conforming to UL 94
Rated Operational Voltage
1000 V AC 0 to 400 Hz power circuit IEC 60947-4-1
Product Certifications
IEC; UL; CSA; CCC; EAC; ATEX INERIS; UKCA
Rated Insulation Voltage
Power circuit 1000 V IEC 60947-4-1; Power circuit 600 V CSA; Power circuit 600 V UL
Product Name
TeSys LRD; TeSys Deca
Network Frequency
0 to 400 Hz
Thermal Overload Class
Class 10A IEC 60947-4-1
Thermal Protection Adjustment Range
37 to 50 A
Rated Impulse Withstand Voltage
6 kV IEC 60947-1
Ambient Air Temperature For Operation
-4 to 140°F (-20 to 60°C) without derating IEC 60947-4-1
Associated Fuse Rating
4 A gG for signalling circuit; 4 A BS for signalling circuit
Tightening Torque
Control circuit 15.05 lbf.in (1.7 N.m) screw clamp terminals; Power circuit 79.66 lbf.in (9 N.m) screw clamp terminals
Permissible Current
0.72 A 500 V AC-15 signalling circuit; 0.06 A 440 V DC-13 signalling circuit
Mechanical Robustness
Vibrations6 Gn IEC 60068-2-6; Shocks15 Gn for 11 ms IEC 60068-2-7
Mounting Support
Plate, with specific accessories; Rail, with specific accessories; Under contactor
Phase Failure Sensitivity
Tripping current 130% of Ir on two phase, the last one at 0
Ambient Air Temperature For Storage
-76 to 158°F (-60 to 70°C)
Trip Clss
10

Description

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 80 amp through 95 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. Multi standards certified (IEC, UL, CSA, CCC, EAC, ATEX, Marine).

Restrictions

WARNING: Cancer and Reproductive Harm For more information go to www.P65Warnings.ca.gov

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