The Bitzer part number 34702701 corresponds to the SE-B2 Motor Protection Module, a robust safety device designed to protect compressors from overheating and electrical faults.

Key Features of SE-B2 (34702701)

• Voltage Range: 115–240V AC, 50/60Hz
• Sensor Support: Connects up to 9 PTC sensors (DIN 44081/082 compliant)
• Protection Capabilities:
  • Monitors multiple temperature points simultaneously
  • Shuts down compressor if any sensor detects overheating
  • Lockout function prevents automatic restart until power is cycled
• Relay Output: Potential-free changeover contact for safe switching
• Reset Options:
  • Default: Manual reset by interrupting power
  • Optional: Auto-reset by removing bridge between terminals B1–B2
• Operating Temp: 30°C to +70°C
• Mounting: Screw-mounted; compact size (53 × 33 × 68 mm); approx. 170g