SIEMENS 1LA71666AA61-Z MOTOR BRAKE

This Siemens motor brake unit is a high-performance solution for industrial motion systems requiring precise braking, integrated speed control, and enhanced thermal protection. It combines a powerful asynchronous motor with braking and cooling accessories to ensure dependable, efficient operation in demanding environments.

Manufacturer: Siemens
Type: Motor Brake
Model: 1LA71666AA61-Z
Part No.: E0109/217991 04 001

Technical Information

At 50 Hz:

• Rated Power: 11 kW
• Rated Voltage: 400/690 V (Delta/Star), 380“420 / 660“725 V
• Rated Current: 24.5/14.1 A, 24.8“24.7 / 14.3“14.3 A
• Rated Speed: 960 RPM
• Power Factor: 0.74

At 60 Hz:

• Rated Power: 12.6 kW
• Rated Voltage: 460 V (Star), 440“480 V
• Rated Current: 24.2 A, 24.6“24.5 A
• Rated Speed: 1160 RPM
• Power Factor: 0.75

• Mounting Position: IM B5
• Protection Class: IP55
• Thermal Class: F

Attached Components

1. 2LM8240-8NA10 Brake

• Brake Voltage: 230 V
• Frequency: 50/60 Hz
• Torque: 240 Nm
• Brake Current: 0.50 A

2. SIEMENS 2CW2300 Fan

• Voltage: 200“290 V Delta / 346“500 V Star
• Frequency: 50/60 Hz
• Speed: 2690 / 2980 RPM
• Power: 0.269 / 0.354 kW
• Current: 0.95 / 0.55 / 0.84 / 0.48 A
• Class: F
• IP Rating: 55
• Duty: S1 – 100%

3. SIEMENS 1XP8001-1 / 1024 Encoder

• ID Number: 295 448-06
• Serial Number: 10 776 865 C/A7

4. LENZE BFK458-20E Spring Applied Brake

• Part Number: 00409835/10817/45U7
• Voltage: 205 V DC
• Power: 100 W
• Torque: 260 Nm