Control panels

The STA range of electromechanical control panels is designed to control stator impedance start-up and is equipped with protective devices.

• mains input 3ph ~ 50/60Hz 400V ±10%
• 400+230/24V transformer for auxiliary circuits
• automatic (stable) - 0 - Manual (unstable) selector
• one float/pressure switch input
• blue indicator light for mains on
• green light for pump running
• red alarm light for pump protection tripped
• category AC3 line contactor
• category AC3 impedance starting contactor
• starting impedance
• 4 operations/hour of which no more than 2 can be consecutive
• max. acceleration time of 15 s.
• overload thermal cut-out relay with internal reset
• 0 – 30s impedance release timer
• protection fuses for auxiliary and power circuits
• main switch with door lock
• metal cabinet
• IP55 protection rating
• ambient temperature:-5/+40°C
• relative humidity at 40°C: 50% (non-condensing)