Schneider LRD3361 TeSys Deca Thermal Overload Relay – 55…70 A

 38,000
 28,500

  • Range: TeSys
  • Component type: Differential thermal overload relay
  • Device short name: LRD
  • Net weight: 0.51 kg
  • Relay application: Motor protection
  • Network type: DC / AC
  • Thermal overload class: Class 10A conforming to IEC 60947-4-1
  • Thermal protection adjustment range: 55…70 A

Additional information

Setting Range

55..70A

Product Specifications

Device short name
lrd
relay application
motor protection network type
thermal overload class
class 10a conforming to iec 60947-4-1
thermal protection adjustment range
55…70 a
rated insulation voltage [ui]
power circuit; 600 v conforming to csa / power circuit; 600 v conforming to ul / power circuit; 690 v conforming to iec 60947-4-1
for use with contactors lc1
d80 ~ d95
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
conventional free air thermal current [ith]
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
rated operational voltage[ue]
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
rated impulse withstand voltage [uimp]
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
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

Product Details

TeSys LRD thermal overload relay, 70A/1000V, thermal setting range 55-70A, tripping class 10A, for protection of 3-phase motors 37kW@400V. Differential device with phase failure and load unbalance detection. It provides a thermal adjustment dial, a manual-automatic reset selector acting also as a reset button, a trip test button for simulation of tripping, a stop button, a flag indicator, and 2 auxiliary contacts 1NO+1NC for fault signaling. Settings are protected by a transparent cover lockable by sealing. Connection by screw clamp 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 the use of a terminal block LA7D3064 (to be ordered separately). Multi standards certified (IEC, UL, CSA, CCC, EAC, ATEX, Marine), Green Premium compliant (RoHs/Reach).

User Manual

schneider-lrd3361-overload-relay

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