Basler BE1-50/51B Overcurrent Relay (Model 105)

The Basler BE1-50/51B Model 105 is a digital overcurrent relay providing both instantaneous (50) and time‑overcurrent (51) protection. It is designed for generator, transformer, and feeder protection with programmable curves and high accuracy.

Includes front‑panel display, keypad, and Modbus communication option.

Technical Specifications

• Model: BE1-50/51B (Model 105)

• Protection: Instantaneous and time overcurrent

• CT inputs: 1/5 A

• Pickup: 0.05‑20 A

• Time curves: Definite, IEC, IEEE

• Output contacts: 2 form C

• Power supply: 24‑240 V AC/DC

• Operating temperature: -40°C to +70°C

• Certifications: CE, UL, RoHS

Functional Features

• Dual protection elements.

• Programmable curves.

• Event recording.

Typical Applications

• Generator backup.

• Feeder and transformer protection.

Installation

Panel mount, connect CTs and power.

Conclusion

BE1-50/51B provides comprehensive overcurrent protection.