Lr9 Electronic Protection Relay
LR9 electronic protection relays are especially suited to the operating conditions of motors. They provide protection against: thermal overload of 3-phase or single-phase balanced or unbalanced circuits; phase failure and large phase unbalance, protracted starting times, prolonged stalled rotor condition.
Specifications
Simplified version: class 10 or 20
| Rated or scale of rated current(A) | aM(A) | gG(A) | Model of contactor | Model |
| 10 class | ||||
| 30~50 | 50 | 80 | F115- F185 | LR9-5357 |
| 48~80 | 80 | 125 | F115- F185 | LR9-5363 |
| 60~100 | 100 | 200 | F115- F185 | LR9-5367 |
| 90~150 | 160 | 250 | F115- F185 | LR9-5369 |
| 132~220 | 250 | 315 | F185- F400 | LR9-5371 |
| 200~330 | 400 | 500 | F225- F505 | LR9-7375 |
| 300~500 | 500 | 800 | F225- F500 | LR9-7379 |
| 380~630 | 630 | 800 | F400- F630 F800 |
LR9-7381 |
| 20 class | ||||
| 30~50 | 50 | 80 | F115- F185 | LR9-5557 |
| 48~80 | 80 | 125 | F115- F185 | LR9-5563 |
| 60~100 | 100 | 200 | F115- F185 | LR9-5567 |
| 90~150 | 160 | 250 | F115- F185 | LR9-5569 |
| 132~220 | 250 | 315 | F185- F400 | LR9-5571 |
| 200~330 | 400 | 500 | F225- F500 | LR9-7575 |
| 300~500 | 500 | 800 | F225- F500 | LR9-7579 |
| 380~630 | 630 | 800 | F400-F630 F800 |
LR9-7581 |
Product Features
● LR9 electronic protection relays are mounted directly below LC1 F type contactor. They cover a range from 30 to 630 A, in eight ratings.
● The settings can be locked by sealing the transparent protective cover. Areset button is mounted on the front of the relay.
● Two versions are available:simplified version: class 10: LR9*3** , class 20: LR9 *5**,
complete version: class 10, 10 A or class 20, select-able, conforming to EN 60947-4-1: LR9**.
● This latter version includes an alarm function which makes it possible to forestall tripping by load shedding.
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