Motor Protection Switch 20-25A/3 BE2 PB

Three-pole motor protection switch with adjustable current range 20-25A and thermal overload release. Designed to protect asynchronous motors from overload and short-circuit conditions in AC power networks.

Main characteristics:

• Rated insulation voltage: 690V
• Rated impulse withstand voltage: 8000V
• Rated frequency: 50/60 Hz
• Adjustment range: 20-25A
• Short-circuit release setting current: 327A
• Protection degree: IP20 (finger-proof protection)
• Mechanical endurance of main contacts: 100,000 cycles
• Mechanical endurance of auxiliary contacts: 100,000 cycles
• Maximum switching frequency (AC-3): 30 operations/hour

Design:

• Three-pole circuit with 3 closing main contacts
• Auxiliary contacts: 1 closing + 1 opening contact
• Connection type: screw terminal for cables up to 8.8 mm²
• Mounting on U-shaped rail
• Tightening torques: 1.7 Nm (main cable), 1.2 Nm (control circuit cables)

Operating conditions:

• Ambient temperature range: -5...+40°C
• Relative humidity: 50%
• Maximum installation altitude: 2000 m
• Pollution degree: 3
• Permissible installation deviation: ±5° (vertical and horizontal)

Technical parameters:

• Power loss: 6.0 W
• Weight: 0.29 kg
• Overall dimensions: 44.5 × 80.8 × 91.3 mm
• Standards: IEC EN 60947-2, IEC EN 60947-4-1
• Manufacturer: Schrack
• Delivery: 1 unit or package of 60 units