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LRD350 | 37-50A Overload Relay | Schneider Electric (Square D)
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Schneider Electric (Square D) LRD350 Documents
Overview
Details for LRD350
37-50A Overload Relay: Schneider Electric Square-D LRD350The LRD350 is a 37-50A overload relay designed to protect motors from damage caused by overloads or short circuits. It features adjustable trip settings, providing flexibility to match specific motor requirements. The relay is mounted directly to the motor starter or contactor, providing a compact and convenient solution.Its rugged construction ensures reliability and durability, making it suitable for use in demanding industrial environments. The LRD350 is commonly used in industrial automation, conveyor systems, and other applications where motor protection is critical.Shop our HVAC supply store for the best prices and fast shipping on all your electrical supplies! 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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