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Schneider Electric

LRD3357A66

LRD3357A66 Schneider Electric

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Description for LRD3357A66 Schneider Electric

LRD3357A66 Schneider Electric - TeSys LRD thermal overload relays - 37...50 A - class 10A

Extended Description for LRD3357A66 Schneider Electric

LRD3357A66 Schneider Electric - TeSys Deca LRD thermal overload relay, 50A/1000V, thermal setting range 37-50A, tripping class 10A, for protection of 3-phase motors 22kW@400V.,Differential device with phase failure (loss).,It provides a thermal adjustement dial, a manual-automatic reset selector acting also as reset button, a trip test button for simulation of a tripping, a stop button, a flag indicator and 2 auxiliary contacts 1NO+1NC for fault signalling.,Settings are protected by a transparent cover lockable by sealing.,Connection by screw clamp/ lugs-ring terminals, it connects directly to the bottom terminals of 3-pole contactors LC1D80-D95.,Mounting on DIN rail or screw fixing, separated from the contactor, with use of a terminal block LA7D3064 (to be ordered separately).,Multi standards certified (IEC, UL, CSA, CCC, EAC, ATEX), Green Premium compliant (RoHs/Reach).

Free Delivery to UK Mainland on orders over £25

Direct from Manufacturer

Available on back order
4 - 6 W.Weeks
£116.67 Exc. VAT
£140.00 Inc. VAT

Main

Range TeSys
Product name TeSys LRD,TeSys Deca
product or component type Differential thermal overload relay
Device short name LRD
Relay application Motor protection
Product compatibility LC1D95,LC1D80
Network type DC,AC
Thermal overload class Class 10A conforming to IEC 60947-4-1
Thermal protection adjustment range 37…50 A
[Ui] rated insulation voltage Power circuit: 1000 V conforming to IEC 60947-4-1,Power circuit: 600 V conforming to CSA,Power circuit: 600 V conforming to UL

Complementary

Network frequency 0...400 Hz
Mounting support Plate, with specific accessories,Rail, with specific accessories,Under contactor
Tripping threshold 1.14 +/- 0.06 Ir conforming to IEC 60947-4-1
Auxiliary contact composition 1 NO + 1 NC
[Ith] conventional free air thermal current 5 A for signalling circuit
Permissible current 0.72 A at 500 V AC-15 for signalling circuit,0.06 A at 440 V DC-13 for signalling circuit
[Ue] rated operational voltage 1000 V AC 0...400 Hz for power circuit conforming to IEC 60947-4-1
Associated fuse rating 4 A gG for signalling circuit,4 A BS for signalling circuit
[Uimp] rated impulse withstand voltage 6 kV conforming to IEC 60947-1
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 -20…60 °C
Connection pitch 17.5 mm
Connections - terminals Control circuit: screw clamp terminals 2 cable(s) 1…2.5 mm² flexible without cable end,Control circuit: screw clamp terminals 2 cable(s) 1…2.5 mm² flexible with cable end,Control circuit: screw clamp terminals 2 cable(s) 1…2.5 mm² solid without cable end,Power circuit: lugs-ring terminals
Tightening torque Control circuit: 1.7 N.m - on screw clamp terminals,Power circuit: 11.3 N.m - on lugs-ring terminals M10
Height 81 mm
Width 70 mm
Depth 115 mm
net weight 0.51 kg

Environment

Climatic withstand conforming to IACS E10
IP degree of protection IP20 conforming to IEC 60529
Ambient air temperature for operation -20…60 °C without derating conforming to IEC 60947-4-1
Ambient air temperature for storage -60…70 °C
Flame retardance V1 conforming to UL 94
Mechanical robustness Vibrations: 6 Gn conforming to IEC 60068-2-6,Shocks: 15 Gn for 11 ms conforming to IEC 60068-2-7
Dielectric strength 2.2 kV at 50 Hz conforming to 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,UKCA

Packing Units

Unit Type of Package 1 PCE
Number of Units in Package 1 1
Package 1 Height 7.7 cm
Package 1 Width 8.5 cm
Package 1 Length 11.8 cm
Package 1 Weight 402.0 g

Contractual warranty

Warranty 18 months

Documentation

Product Datasheet

Instruction sheet

Catalogue

CAD

Environmental disclosure

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