Product Short Description
Technical Specifications
Manufacturer: Basler Electric
Model: BE3-25A
Function: 3-phase instantaneous and time-overcurrent protection relay with earth-fault detection
Current Inputs: 5 A or 1 A nominal, field-selectable via DIP switch
Frequency: 50 Hz / 60 Hz auto-detect
Overload Withstand: 20 × In continuous, 100 × In for 1 s
Burden: < 0.2 VA per phase at 5 A
Pickup Range: 0.05 – 20 In in 0.01 A steps
Time-Current Curves: IEEE very-inverse, extremely-inverse, moderately-inverse, IEC A/B/C, definite-time, custom
Description
Accuracy: ± 2 % of setting or ± 0.5 % of full scale
Reset Ratio: > 95 %
Output Contacts: 2 × Form C (SPDT), 6 A continuous, 30 A make at 250 V AC
Auxiliary Supply: 24 – 250 V AC/DC universal, 6 VA max
Insulation: 2 kV RMS, 50 Hz, 1 min
EMC: IEC 60255-26 Class A, IEC 61000-4-x suite
Mechanical
Mounting: DIN rail (35 mm) or panel
Dimensions: 96 mm H × 48 mm W × 122 mm D
Weight: 0.35 kg
Front Panel: 96 × 48 mm (1/8 DIN), IP54 sealing gasket supplied
Operating Temperature: –40 °C to +70 °C
Storage Temperature: –55 °C to +85 °C
Relative Humidity: Up to 95 % non-condensing
Shock & Vibration: IEC 60255-21-1 Class 1
Reset Ratio: > 95 %
Output Contacts: 2 × Form C (SPDT), 6 A continuous, 30 A make at 250 V AC
Auxiliary Supply: 24 – 250 V AC/DC universal, 6 VA max
Insulation: 2 kV RMS, 50 Hz, 1 min
EMC: IEC 60255-26 Class A, IEC 61000-4-x suite
Mechanical
Mounting: DIN rail (35 mm) or panel
Dimensions: 96 mm H × 48 mm W × 122 mm D
Weight: 0.35 kg
Front Panel: 96 × 48 mm (1/8 DIN), IP54 sealing gasket supplied
Operating Temperature: –40 °C to +70 °C
Storage Temperature: –55 °C to +85 °C
Relative Humidity: Up to 95 % non-condensing
Shock & Vibration: IEC 60255-21-1 Class 1
Functional Highlights
Independent three-phase overcurrent plus earth-fault element in one housing
Real-time RMS measurement using 32-sample cycle calculation
Integral test push-button and LED indicators for pickup, trip, and self-diagnostic states
Password-protected front keypad or PC software configuration via RS-485 Modbus RTU
Event recorder stores 128 time-stamped events with 1 ms resolution
Waveform capture of 8 cycles triggered by trip or alarm
Programmable lockout delay and cold-load pickup inhibit
Inverse-time curve editing tool allows user-defined curves for unique coordination needs
Independent three-phase overcurrent plus earth-fault element in one housing
Real-time RMS measurement using 32-sample cycle calculation
Integral test push-button and LED indicators for pickup, trip, and self-diagnostic states
Password-protected front keypad or PC software configuration via RS-485 Modbus RTU
Event recorder stores 128 time-stamped events with 1 ms resolution
Waveform capture of 8 cycles triggered by trip or alarm
Programmable lockout delay and cold-load pickup inhibit
Inverse-time curve editing tool allows user-defined curves for unique coordination needs
Application Scenarios
Utility substations – feeder and transformer protection
Industrial plants – motor, generator, and cable protection
Oil & gas – pump station and compressor protection
Data centers – incoming switchgear and UPS feeder backup
Renewable energy – inverter and collector line protection in solar and wind farms
Utility substations – feeder and transformer protection
Industrial plants – motor, generator, and cable protection
Oil & gas – pump station and compressor protection
Data centers – incoming switchgear and UPS feeder backup
Renewable energy – inverter and collector line protection in solar and wind farms
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