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AEG 43506698
Product Introduction:
The part number 43506698 corresponds to an AEG door interlock lock switch primarily used in AEG washing machines and tumble dryers. This component serves as a safety interlock device that prevents the door from being opened during operation (when the drum is locked) and prevents the machine from starting when the door is not fully closed and locked.
Detailed content
Technical Specifications:
| Parameter | Value |
|---|---|
| Part Number | 43506698 |
| Type | Electromechanical door lock / interlock switch |
| Rated Voltage | 250 V AC |
| Rated Current | 10 A (resistive load) |
| Contact Configuration | 3 terminals (COM, NO, NC) |
| Operating Temperature | -10°C to +90°C (local) |
| Mechanical Life | 10,000 locking/unlocking cycles |
| Standards Compliance | EN 60335-1, EN 60335-2-7, EN 60335-2-6 |
| Degree of Protection | IPX4 (splash-proof) |
| Actuation Force | ~30 N (door latch engagement) |
| Lock Release Voltage | 220–240 V AC (via PTC heater delay) |
Material Composition:
- Housing: Glass-fibre reinforced PA66 (high-temperature grade)
- Lock Mechanism: Zinc die-cast alloy with stainless steel latch bolt
- PTC Heater Element: Ceramic PTC thermistor (for delay-to-unlock function)
- Electrical Contacts: Silver alloy (Ag) with gold flash
- Wiring: Silicone-insulated high-temperature wire (180°C rated)
- Sealing Gasket: EPDM rubber
Structural Features:
- Integrated 3-terminal microswitch with COM/NO/NC contacts
- PTC heater element provides 2–3 minute delay after cycle end before door can be opened
- Mechanical latch bolt physically blocks door opening during operation
- Cable harness with quick-connect terminal for appliance wiring
- Mounting holes compatible with standard AEG front-loading machine door frames
Working Principle:
When the wash cycle begins, the control board energizes the PTC heater inside the lock. Simultaneously, the solenoid (in solenoid-type variants) or the mechanical latch engages, locking the door. The interlock switch changes state: the NC contact opens (signalling “door locked” to the control board) and the NO contact closes. After the cycle ends, the PTC heater continues to power the lock for a 2–3 minute cool-down delay (to allow drum temperature to drop and water to drain). Once the PTC cools below its Curie temperature, the lock releases, the latch retracts, and the switch returns to its resting state (NC closed, NO open), allowing the door to be opened.
Functional Features:
- Safety interlock: Prevents door opening during high-speed spin or heating phases
- Delayed unlock: PTC heater provides automatic time-delay release
- 3-terminal switching: Provides both locked and unlocked status signals to the PCB
- Mechanical + electrical redundancy: Dual safety mechanism
Advantages & Highlights:
- Integrated PTC delay eliminates need for separate timer circuits
- Mechanical latch provides physical door security
- Compact design fits standard AEG appliance door frames
- High cycle life (10,000 cycles) ensures long-term reliability
Applicable Industries:
- Household appliance manufacturing (washing machines, tumble dryers)
- Aftermarket appliance repair and spare parts
Installation Requirements:
- Align mounting holes with the appliance door frame (typically 4 screw positions)
- Connect 3 wires to PCB: COM, NO, NC (verify wire colour code per machine model)
- Torque mounting screws to 1.5 Nm
- Ensure door gasket is properly seated before locking
Usage Precautions:
- Do not force the door open while the lock is engaged — this will damage the latch mechanism
- Verify PTC heater continuity (typical resistance: 20–40 Ω at 20°C) before installation
- Replace the entire assembly if the latch bolt is bent or contacts are burnt
- Do not operate the machine with a faulty door lock — this is a safety-critical component
