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Datasheet

LR3D350 | TeSys LRD thermal overload relays - 37...50 A - class 10A | Square D by Schneider Electric

Brand: Square DSKU: LR3D350

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Overview Details for LR3D350

TeSys LRD thermal overload relays - 37...50 A - class 10A

LR3D350 is a TeSys LRD thermal overload relay from Schneider Electric to be used with a TeSys D contactor. It protects motors 22kW@400V thanks to a thermal range 37-50A , a tripping class 10A, for use with unbalanced loads. LR3D350 is a TeSys LRD thermal overload relay from Schneider Electric for direct mounting on TeSys D contactors. With a thermal setting range 37-50A and tripping class 10A, it protects unbalanced loads and motors 22kW@400V. It provides manual test & reset buttons, automatic reset, trip auxiliary contact and flag indicator. Available worldwide, it is multi-standards certified (IEC, UL, CSA, CCC, EAC, Marine) and Green Premium compliant (RoHs/Reach). Thermal overload protection relay, bimetallic type, for use with unbalanced loads (non differential). Direct mounting on the bottom terminals of a Tesys contactor LC1D40A-D65A to form a compact starter. Light and compact, 55mm wide. Temperature compensated for a good accuracy of the protection. Manual control with test & reset buttons, manual / automatic reset selector. Trip signaling with 1NO+1NC auxiliary contacts and trip flag indicator. Can be completed with terminal blocks for separate mounting (LAD7B, LAD96) and remote control devices (LAD703, LA7D03).

Specifications

range: TeSys;TeSys Deca
product name: TeSys LRD;TeSys Deca
Product or Component Type: Non differential thermal overload relay
device short name: LR3D
relay application: Motor protection
Product Compatibility: LC1D40A;LC1D50A;LC1D65A
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;GB/T 14048.4;GB/T 14048.5
Product Certifications: IEC;UL;CSA;CCC;EAC;DNV-GL;RMRS;EU-RO MR;LROS (Lloyds register of shipping);UKCA
Category: 22347-CONTACTOR;D-LINE;OVERLOADS-NEW
Discount Schedule: I12
GTIN: 3389119215923
Returnability: Yes
Country of origin: FR
Unit Type of Package 1: PCE
Number of Units in Package 1: 1
Package 1 Height: 2.56 in (6.5 cm)
Package 1 Width: 4.33 in (11 cm)
Package 1 Length: 5.51 in (14 cm)
Package 1 Weight: 14.22 oz (403 g)
Unit Type of Package 2: S02
Number of Units in Package 2: 13
Package 2 Height: 5.91 in (15 cm)
Package 2 Width: 11.81 in (30 cm)
Package 2 Length: 15.75 in (40 cm)
Package 2 Weight: 12.04 lb(US) (5.462 kg)
Package 3 Height: 30.31 in (77 cm)
Warranty: 18 months