Description

Used product. The ABB A45-40 is a power contactor from the ABB A45 series, configured with 4 normally open main poles (4NO) and designed for switching electrical loads and power circuits in industrial applications.

The contactor is equipped with an ABB CAL5-11 auxiliary contact block, side-mounted and configured with 1 normally open contact (1NO) + 1 normally closed contact (1NC). The CAL5-11 provides an additional auxiliary circuit for control, signaling, and electrical interlocking.

The component shows signs of previous use, including light abrasions and superficial marks on the plastic components and terminals, consistent with previous installation. As no documented electrical test is available, operation should be verified before recommissioning.

⚙️ Technical Specifications

ABB A45-40 Power Contactor

• Brand: ABB
• Series: A45
• Model: A45-40
• Configuration: 4 main poles – 4NO
• Utilization Category: AC-1 / AC-3
• Ith: 100 A
• Rated AC-1 Current Ie: 70 A
• Rated Insulation Voltage Ui: 1000 V AC
• Maximum Indicated Voltage: up to 690 V AC
• Control Circuit: AC
• Standards: IEC 947-4-1 / EN 60947-4-1

AC-3 Rated Power

• 230 V: 11 kW
• 400 V: 18.5 kW
• 500 V: 22 kW
• 690 V: 22 kW

⚠️ Coil voltage: The complete coil voltage code is not legible in the photographs. The A45 series was available with different control voltages; therefore, the coil voltage must be verified directly on the component before connection. Documented versions include 24 V, 110 V, 220–230 V, and 400–415 V AC.

🔌 ABB CAL5-11 Auxiliary Contact

The contactor is fitted with a side-mounted ABB CAL5-11 auxiliary contact block:

• Configuration: 1NO + 1NC
• Insulation Voltage Ui: 690 V AC
• Ith: 16 A
• Utilization Category: AC-15
• Ie AC-15:
  • 4 A at 230 V
  • 3 A at 400 V
  • 2 A at 500 V
  • 2 A at 690 V
• Mounting: Side-mounted
• Connection: Screw terminals
• Standard: IEC/EN 60947-5-1
• Terminal Protection: IP20
• ABB Code: 1SBN010020R1010

⚡ Function in the Electrical System

The ABB A45-40 allows simultaneous switching of four power circuits, making it particularly suitable for non-inductive or moderately inductive loads.

The fourth pole can be useful when it is necessary to switch the neutral or a fourth conductor, provided this is compatible with the electrical system design and applicable installation requirements.

The CAL5-11 1NO+1NC auxiliary contact can be used for:

• Self-holding circuits
• Contactor status indication
• Electrical interlocking
• Auxiliary control circuits
• Connections to automation and control systems

🏭 Construction & Installation

The A45 belongs to ABB's family of block contactors, designed for installation in electrical panels, automation systems, motor starters, and industrial equipment.

The four main poles are identified as:

• 1L1 → 2T1
• 3L2 → 4T2
• 5L3 → 6T3
• 7L4 → 8T4

The CAL5-11 auxiliary contact block is installed laterally on the contactor, as intended for this device family.

Before installation, verify the electrical diagram, operating voltage, conductor sizing, terminal condition, and the required switching characteristics for the application.

🌐 Applications

The contactor may be used in:

• Industrial electrical panels
• Automation systems
• Motor and electrical load control
• Heating circuits
• Industrial lighting systems
• Industrial machinery
• Switching and distribution systems
• Applications requiring 4 power poles

The ABB A45 4-pole family is primarily intended for controlling non-inductive or lightly inductive loads and power circuits up to 690 V AC, according to the specified configuration.

💡 Key Advantages

• 4 main poles – 4NO
• 70 A AC-1
• Ui 1000 V AC
• Suitable for applications up to 690 V AC
• AC-3 power up to 22 kW at the indicated voltages
• Robust ABB construction for industrial applications
• CAL5-11 auxiliary contact – 1NO + 1NC already installed
• Suitable as a replacement for existing ABB equipment
• Wide range of accessories and configurations available for the A45 series

🛡️ Safety & Product Condition

Used product, with normal cosmetic signs of previous use.

Before installation, it is recommended to verify:

• Coil rated voltage
• Continuity and insulation of the four main contacts
• Mechanical operation of the armature
• Operation of the CAL5-11 1NO + 1NC auxiliary contacts
• Condition and tightening of the terminals
• Any signs of overheating or damage

Do not energize the coil before verifying its rated voltage. Installation and testing must be carried out by qualified personnel.

📦 Package Contents

• 1 × ABB A45-40 Power Contactor
• 1 × ABB CAL5-11 Auxiliary Contact Block – 1NO + 1NC

The product is supplied in the configuration shown in the photographs.

🚀 Final Description

The ABB A45-40 4-pole power contactor is a robust solution for switching industrial electrical loads up to 70 A in AC-1, with a rated insulation voltage of 1000 V AC and applications up to 690 V AC.

The integrated ABB CAL5-11 1NO+1NC auxiliary contact block adds functionality to the assembly, making it particularly interesting as a replacement for ABB components installed in industrial electrical panels and machinery.

Please verify the coil voltage directly on the component before installation, as the complete coil voltage marking is not clearly legible in the available photographs.