U133 - Star-delta start control box with level relay + sequence and phase failure relay.
Command and protection of pumps used in the extraction of water from wells, arthesian holes or other reservoirs.
- 415x315x170 mm (<32A) or 615x415x230 (>30A) mm grey RAL7035 polyester box.
- Motor circuit breaker/Contactor and overload relay with requested trademarks.
- Timer for regulation of operation period in Star mode.
- Level relay for protection of lack of water.
- Sequence phase failure relay for protection against phase failure or phase failure.
- Automatic functioning, manual or OFF, controlled by a 3 position toggle switch.
- Connection in reduced tension (24v) for safety remote control connection (C11-C12) (pressure-switch, float-switch or other).
- Connection with reduced tension (24v) for Start/Stop remote control (P11-P12) (pressure-switch, float-switch or other).
- Protection of the command circuit by a fuse.
- Protection of the power circuit against short-circuits by a circuit breaker/magnetic circuit breaker.
- Protection of the power circuit against over-charges by a circuit breaker (<32A) / overload relay (>30A).
- Indication of phase presence on the command circuit (yellow signal lamp).
- Indication of motor ON in Star mode (yellow signal lamp).
- Indication of motor ON in Delta mode (green signal lamp).
- Indication of lack of water (red signal lamp).
- Indication of phase change or phase failure (red signal lamp).
- Overload trip indication (red signal lamp).