Description
ABB A40-30-10 110-120V
Technical Specifications:
- Rated Working Current: 40A at 380V (AC-3 utilization category).
- Control Coil Voltage: 110V – 120V AC.
- Auxiliary Contacts: 1 Normally Open (NO) contact.
- Utilization Category: AC-3 for squirrel cage motors.
Functional Features:
- High Current Capacity: Capable of safely switching and carrying 40A continuous load.
- Enclosed Arc Chamber: Features U-shaped arc chutes forming a closed arc extinguishing chamber for zero fly-arc distance.
- Modular Accessories: Compatible with a wide range of auxiliary contact blocks and interlocks.
Application Scenarios:
- Heavy-duty motor control and industrial automation.
- Main power distribution switching.
- Large HVAC compressors and industrial fans.
Performance Parameters:
- Voltage Rating: Rated for continuous operation at up to 690V.
- Switching Capacity: High making and breaking capacity for motor starting inrush currents.
Material Composition & Structural Characteristics:
- Arc Chutes: Integrated U-shaped arc extinguishing plates within the frame.
- Conductive Parts: Fully enclosed conductive components for enhanced operator safety.
Working Principle:
Operates on the same electromagnetic principle as the A-series. The 110-120V coil actuates the main 40A contacts and the auxiliary NO contact, providing reliable switching for heavier electrical loads.
Installation Requirements:
- Cable Sizing: Use appropriately sized copper conductors to handle 40A without excessive voltage drop or heating.
- Mounting: Securely fasten to a rigid panel or DIN rail to withstand electromagnetic forces during switching.
Usage Precautions:
- Derating: Apply appropriate derating factors if installed in high-temperature environments or enclosed panels with poor ventilation.
- Maintenance: Periodically inspect main contacts for pitting and carbon buildup.
