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SEG BU1-AC-400 Static Voltage Monitoring Relay
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The SEG BU1-AC-400 is a static voltage monitoring relay designed by SEG Electronics to protect single-phase and three-phase electrical systems against dangerous overvoltage and undervoltage fluctuations.
Key Features
- Self-Powered: Operates directly from the monitored line voltage and needs no separate auxiliary power supply.
- Dual Supervision: Provides independent monitoring for both overvoltage (U>) and undervoltage (U<) with adjustable pickup values and a common trip delay.
- Visual Status Indicators: Features front-panel LED indicators to show normal operation, pickup state, and tripping events.
- DIN-Rail Mounting: Built into a compact housing that mounts easily onto standard DIN rails.
- Secure Front Panel: Includes a sealable, transparent front cover rated at IP40 protection to prevent accidental changes to settings.
Technical Specifications
- Rated Voltage (\(U_{n}\)): 400 V AC (also supports 110 V and 230 V variants)
- Rated Frequency Range: 45 to 66 Hz
- Power Consumption: 3.5 VA in the voltage circuit
- Operating Temperature Range: -25°C to +70°C
- Output Relay Ratings: Maximum breaking capacity of 250 V AC / 120 W DC (ohmic) with a rated current of 5 A
- Unit Weight: Approximately 0.5 kg
SEG BU1-AC-400 Static Voltage Monitoring Relay
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