LRD
Model Reference
LRD13
LRD23
LRD33
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
