Product Overview

The ​ABB AX40-30-10-81​ is a heavy-duty industrial contactor designed for reliable motor control and power switching applications. Part of ABB's comprehensive contactor portfolio, this robust device provides exceptional switching performance for industrial automation, motor control centers, and power distribution systems. With its durable construction and high electrical endurance, it ensures long service life in demanding industrial environments.

Key Features

• ​High Switching Capacity​ - Designed for heavy-duty motor control applications

• ​Robust Construction​ - Industrial-grade materials for long service life

• ​Modular Design​ - Easy installation and accessory integration

• ​Visual Status Indicators​ - Mechanical position indicator

• ​Multiple Mounting Options​ - DIN rail and panel mounting compatibility

• ​Accessory Compatibility​ - Supports auxiliary contacts and timers

• ​International Standards​ - Complies with global safety and performance standards

• ​Energy Efficient​ - Low power consumption coil design

Technical Specifications

Electrical Characteristics

Main Circuit Specifications

• ​Rated Operational Current (Ie)​​ | 40A at 400V AC

• ​Rated Operational Voltage (Ue)​​ | 690V AC

• ​Utilization Categories:

  • AC-1: 100A (non-inductive loads)

  • AC-3: 40A (squirrel cage motors)

  • AC-2: 55A (slip-ring motors)

  • AC-4: 35A (switching of motors during starting)

• ​Rated Short-time Withstand Current​ | 10kA for 1 second

• ​Making Capacity​ | 10 × Ie

• ​Breaking Capacity​ | 8 × Ie

Control Circuit Specifications

• ​Coil Voltage Range​ | 230V AC ±10%

• ​Coil Frequency​ | 50/60 Hz

• ​Pick-up Power​ | 70VA

• ​Hold Power​ | 8VA

• ​Release Voltage​ | <60% of rated voltage

• ​Operate Time​ | <20ms

• ​Release Time​ | <25ms

Mechanical Specifications

Physical Dimensions

• ​Number of Poles​ | 3 Main Poles

• ​Auxiliary Contacts​ | 1NO + 1NC (standard)

• ​Module Width​ | 45mm (approx. 2.5 modules)

• ​Height​ | 130mm

• ​Depth​ | 105mm

• ​Mounting​ | 35mm DIN rail or panel mounting

• ​Terminal Type​ | Screw terminals

• ​Terminal Capacity​ | 35mm² max conductor size

Construction Details

• ​Housing Material​ | Thermoplastic (self-extinguishing)

• ​Contact Material​ | Silver alloy with arc-resistant properties

• ​Arc Chamber​ | Efficient arc quenching system

• ​Operating Mechanism​ | Double-break contact system

• ​Magnetic System​ | Energy-efficient AC magnet system

Performance Characteristics

Switching Performance

• ​Mechanical Endurance​ | 10,000,000 operations

• ​Electrical Endurance​ |

  • AC-3: 1,500,000 operations

  • AC-1: 3,000,000 operations

• ​Operating Frequency​ | 3600 operations/hour maximum

• ​Contact Resistance​ | <0.5mΩ per pole

Thermal Performance

• ​Ambient Temperature​ | -25°C to +60°C

• ​Storage Temperature​ | -40°C to +70°C

• ​Thermal Current (Ith)​​ | 55A

• ​Heat Dissipation​ | Natural convection cooling

Applications

The ABB AX40-30-10-81 is ideal for:

• ​Motor Control​ - Three-phase motor starting and stopping

• ​Industrial Automation​ - Machine and equipment control

• ​Power Distribution​ - Load switching and circuit control

• ​HVAC Systems​ - Compressor and fan motor control

• ​Material Handling​ - Conveyor and crane control systems

• ​Pump Control​ - Water and fluid pumping applications

• ​Manufacturing Equipment​ - Production machinery control

Installation & Operation

Mounting Requirements

• ​DIN Rail Mounting​ | Standard 35mm DIN rail

• ​Panel Mounting​ | Direct mounting with screws

• ​Orientation​ | Any mounting position

• ​Clearance​ | Minimum 10mm side clearance recommended

Electrical Connections

• ​Main Terminals​ | Screw terminals for power connections

• ​Control Terminals​ | Screw terminals for coil connections

• ​Auxiliary Terminals​ | Screw terminals for accessory contacts

• ​Wire Size​ | 1.5-35mm² (main circuit)

• ​Torque Settings​ | 2.0-2.5 Nm recommended

Accessory Integration

• ​Auxiliary Contacts​ | Up to 4 additional contact blocks

• ​Mechanical Interlock​ | Available for reverse operation prevention

• ​Timer Modules​ | Compatible with timing accessories

• ​Surge Suppression​ | Optional RC suppression modules

Certifications & Compliance

• ​International Standards:

  • IEC 60947-4-1

  • EN 60947-4-1

  • UL 508

  • CSA C22.2

  • CE Marked

• ​Safety Certifications:

  • Short-circuit tested to standards

  • Overload tested per international requirements

• ​Quality Standards:

  • ISO 9001 manufacturing

  • RoHS compliant

• ​Environmental Ratings:

  • Protection degree: IP20

  • Pollution degree: 3

Why Choose ABB AX40-30-10-81?

• ​Reliable Performance​ - ABB's quality and industrial reputation

• ​High Durability​ - 10 million mechanical operations

• ​Easy Installation​ - Multiple mounting options

• ​Energy Efficient​ - Low holding power consumption

• ​Global Compliance​ - International standards certification

• ​Accessory Support​ - Comprehensive accessory ecosystem

• ​Technical Support​ - Backed by ABB's global network

• ​Proven Technology​ - Established performance in industrial applications

Maintenance & Service

• ​Visual Inspection​ | Regular check of contacts and mechanism

• ​Contact Cleaning​ | Periodic contact maintenance if required

• ​Mechanical Check​ | Verify smooth operation periodically

• ​Electrical Testing​ | Insulation resistance testing recommended

• ​Coil Voltage Check​ | Ensure proper control voltage supply