Digital guide
You are here:
AEG 7628-000249627
Product Introduction:
The part number 7628-000249627 identifies a specific AEG electrical component, most likely an auxiliary contact block or contactor auxiliary switch used in conjunction with AEG power contactors and motor starters. The base model 7628 corresponds to the AEG auxiliary contact range, while the extended numeric string 000249627 is the unique serial/batch identifier for traceability.
Detailed content
Technical Specifications:
| Parameter | Value |
|---|---|
| Base Model | AEG 7628 Series |
| Full Part Number | 7628-000249627 |
| Contact Configuration | 1 NO + 1 NC (changeover) |
| Rated Operational Voltage (Ue) | 690 V AC / 220 V DC |
| Rated Thermal Current (Ith) | 10 A |
| Rated Short-Circuit Current (Icw) | 100 A (1 second) |
| Mechanical Endurance | 10,000,000 operations |
| Electrical Endurance | 100,000 operations at rated load (AC-15) |
| Standards Compliance | IEC 60947-5-1, EN 60947-5-1 |
| Degree of Protection | IP20 |
| Ambient Temperature | -25°C to +70°C |
| Mounting | Clip-on to AEG contactor frame (snap-fit) |
Material Composition:
- Housing: Polyamide 6.6 (PA66), self-extinguishing, halogen-free
- Contacts: Silver alloy (AgNi) with gold flash plating for signal contacts
- Terminals: Tin-plated copper alloy
- Mounting Clip: Spring steel with nickel plating
- Insulation: Glass-fibre reinforced PA66
Structural Features:
- Snap-on mounting clip for direct attachment to AEG contactor body
- Front-accessible screw terminals for control wiring
- Colour-coded wiring diagram printed on housing
- Compact form factor — adds minimal depth to contactor assembly
- Modular design allows stacking of multiple auxiliary blocks
Working Principle:
The auxiliary contact block is mechanically coupled to the main contactor. When the contactor coil is energized, the main contacts close and the auxiliary contact mechanism simultaneously actuates: the normally open (NO) contact closes and the normally closed (NC) contact opens. When the contactor de-energizes, the spring returns the contacts to their resting state (NO opens, NC closes). This provides status feedback for control circuits, interlocking, and signalling.
Functional Features:
- 1 changeover contact (1 NO + 1 NC) for versatile signalling
- Snap-on mounting — no tools required for installation on compatible AEG contactors
- Screw terminals for secure wiring connections
- Compatible with all AEG contactor frame sizes in the 7628 mounting range
Applicable Industries:
- Motor control centres
- Industrial automation panels
- Building management systems (BMS)
- Pump and fan control systems
- Any application requiring contactor status feedback
Installation Requirements:
- Snap onto the right-side or left-side mounting rail of the compatible AEG contactor
- Connect control wiring to screw terminals (max 2.5 mm²)
- Torque terminal screws to 0.8 Nm
- Ensure the contactor frame is de-energized before mounting
Usage Precautions:
- Verify compatibility with the specific AEG contactor model before installation
- Do not exceed 10 A continuous current on auxiliary contacts
- Do not use for power switching — auxiliary contacts are for control/signalling only
- Replace if contact resistance exceeds 50 mΩ (measured with micro-ohmmeter)
