Thermal Overload Relay

LR1-D

Model Reference

LRD13LRD13
LRD23LRD23
LRD33LRD33
    Model Reference

Application

  • LRD series thermal relay is suitable for using in the circuits rated voltage up to 660V, ratedcurrent 93A AC 50/60Hz, for over-current protection of AC motor.
  • The relay has the differentialmechanism and temperature compensation and can plug in LC1-D series AC contactor. Theproduct conforms to IEC60947-4-1 stardand.

Motion Characteristic: Three-phase Balance Motion Time

No Times of the setting current Motion time Start conidition Ambient temperature
1 1.05 >2h Cold state 20±5°C
2 1.2 <2h Heat state (Following the No.1 test)
3 1.5 <4min
4 7.2 10A 2s<Tp≤10s ≤63A Cold state
10 4s<Tp≤10s >63A

Phase-losing Motion Characteristic

No Times of the setting current Motion time Start condition Ambient temperature
Any two phases Another phase
1 1.0 0.9 >2h Cold state 20±5oC
2 1.15 0 <2h Heat state(Following the No.1 test)

Technical Data

Type Number Setting range (A) Applied Contactor
LRD13 D01 0.10~0.16 LC1-D-09~38
D02 0.16~0.25 LC1-D-09~38
D03 0.25~0.40 LC1-D-09~38
D04 0.40~0.63 LC1-D-09~38
D05 0.63~1 LC1-D-09~38
D06 1~1.7 LC1-D-09~38
D07 1.6~2.5 LC1-D-09~38
D08 2.5~4 LC1-D-09~38
D10 4~6 LC1-D-09~38
D12 5.5~8 LC1-D-09~38
D14 7~10 LC1-D-09~38
D16 9~13 LC1-D-09~38
D21 12~18 LC1-D-09~38
D22 16~24 LC1-D-09~38
D35 30~38 LC1-D-09~38
LRD23 2353 23~32 LC1-D-25~32
2355 30~40 LC1-D-25~32
LRD33 3322 17~25 LC1-D-40~95
3353 23~32 LC1-D-40~95
3355 30~40 LC1-D-40~95
3357 37~50 LC1-D-50~95
3359 48~65 LC1-D-50~95
3361 55~70 LC1-D-65~95
3363 63~80 LC1-D-65~95
3365 80~93 LC1-D-95

Dimensioned

Dimensioned Dimensioned Dimensioned Dimensioned Dimensioned
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LRD13
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LRD23
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LRD33

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