The Bitzer part number 34701901 refers to the SE-B1 Motor Protection Module, a specialized device designed to safeguard Bitzer compressors from overheating and electrical faults.

Key Features of SE-B1 (34701901)

• Voltage Range: Dual supply — 115–240V AC, 50/60Hz
• Sensor Compatibility: Connects up to 9 PTC sensors (DIN 44081/082 compliant)
• Protection Functions:
  • Monitors motor winding temperature
  • Detects overheating and shuts down the compressor
  • Lockout feature prevents automatic restart until manually reset
• Relay Output: Potential-free changeover contact for safe switching
• Ambient Operating Temp: 30°C to +70°C
• Mounting: Screw-mounted or DIN rail installation
• Dimensions: 50 × 33 × 68 mm; Weight approx. 160g