Terminated Products
Overcurrent / Undercurrent Relay (RC-803A)
The RC-803A current relay is designed to control and protect processes and equipment by monitoring the current of an induction motor or other similar loads.
Overcurrent / Undercurrent Relay (RC-803A)
Feature
- Overcurrent and undercurrent adjustable trip points
- Adjustable start-up delay
- Individual output and indication for overcurrent and undercurrent
Application
- Conveyers
- Protect against jams and excessive loads
- Indicates broken or loose belts
- Pumps
- Protect against dry running, clogging, and worn bearings
- Fans
- Monitor for worn or broken belts
- Indicates closed dampers or blocked belts
Specification
Specification List
This table can be scrolled horizontally.
| TYPE FORM | RC803A-HP1 | ||
|---|---|---|---|
| Protection functions | Overcurrent and undercurrent | ||
| Rated current | 5A (Continuous) | ||
| Overcurrent strength | 40 times of 5A 1 second (Twice) | ||
| Input circuit voltage | Maximum 600VAC 50/60Hz | ||
| Operating characteristics |
Operating setting range |
0.5 - 5A (Without CT) | |
| Time setting range | 0.1 -3 seconds T2, T3 | ||
| Start-up delay | 0.3 - 3 seconds T1 | ||
| Rated control voltage | 100-120VAC/200-240VAC phase 50/60Hz | ||
| Power consumption | Control power circuit |
3.5VA | |
| Detecting circuit | 0.1VA at 5A input | ||
| Application conditions |
Ambient temperature | -10 - 60oC | |
| Relative humidity | 45 - 85% (No condensation) | ||
| Output contact | Contact arrangement | 2NO/NC (Form C) | |
| Contact capacity | Resistive 250VAC-5A pf =0.4 250VAC-3A |
L/R=15ms 100VDC - 0.15A 200VDC - 0.1A |
|
