Description
Product Description
The ABB 81943A041-1, detailed further here, is a specialized part or assembly, likely belonging to a low-voltage contactor system or a specific control component within ABB’s vast electromechanical product portfolio. Based on the alphanumeric structure, this part is a specific variant, assembly, or accessory for a primary device such as a contactor, overload relay, or starter combination. Its core function is to provide a mechanical, electrical, or interface enhancement to a base unit, ensuring correct operation, safety, or mounting within a control panel. This could include a set of auxiliary contact blocks, a mechanical interlock kit, a DIN-rail mounting adapter, or a specialized operator interface module. For maintenance technicians and panel builders, identifying and sourcing the correct accessory like the ABB 81943A041-1 is essential for completing repairs, modifications, or builds efficiently, ensuring the final assembly meets the original design specification and safety standards.
Product Parameters
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Manufacturer: ABB
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Product Type: Accessory, Assembly, or Spare Part for a primary control device (e.g., Contactor, Starter).
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Model / Article Number: 81943A041-1
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Compatibility: Designed to be used with a specific series and frame size of a primary ABB device. For example, it could be compatible with the A-line or AF contactor series.
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Function: The function is defined by the part number. Common functions for such accessories include:
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Auxiliary contact block (NO/NC contacts).
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Pneumatic timer attachment.
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Mechanical interlock for two contactors.
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Mounting bracket or rail adapter.
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Cover or protection kit.
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Electrical Rating (if applicable): If it is a contact block, it will have a defined voltage and current rating for the auxiliary circuit (e.g., 10A at 250V AC).
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Mechanical Details: Specific dimensions, material, and connection method (snap-on, screw-mounted).
Advantages and Features
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Guaranteed Compatibility and Fit: As a genuine ABB accessory, it is designed to fit perfectly with the corresponding primary device, ensuring reliable mechanical and electrical connection.
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Simplified Inventory and Repair: Using the correct, factory-specified accessory like the 81943A041-1 streamlines the spare parts process, reduces downtime, and avoids compatibility issues from using generic parts.
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Maintains Original Performance and Safety: Ensures the modified or repaired assembly retains its original performance characteristics, certifications, and safety ratings.
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Ease of Installation: Typically designed for tool-less or simple screw attachment, allowing for quick field modification or upgrade.
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Clear Identification: The part number is clearly marked on the component, aiding in correct identification and re-ordering.
Application Cases in Application Fields
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Industrial Motor Control Panels: The ABB 81943A041-1 could be an auxiliary contact block added to a main contactor to provide extra signaling contacts to a PLC, indicating the contactor’s status (pulled-in or dropped-out).
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HVAC Control Systems: Might be a mechanical interlock kit used between a main and standby pump contactor to prevent both from being energized simultaneously, ensuring system safety and compliance.
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Material Handling Conveyors: Could be a latch kit or timer module added to a starter to create a specific control sequence, such as a delayed drop-out after a stop command.
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Water Treatment Plant Control: Used as a set of additional NO/NC contacts to expand the monitoring capabilities of a motor starter feeding a critical pump, sending signals to the SCADA system.
Comparisons with Competing Products
When compared to generic or third-party accessories, or accessories from other manufacturers like Siemens (3TX), Schneider Electric (LC1D), or Eaton, the ABB 81943A041-1 presents a clear value proposition:
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OEM Guarantee vs. Generic: A genuine ABB 81943A041-1 guarantees perfect fit and electrical compatibility. A generic accessory may be cheaper but risks poor fit, unreliable contact, and may void the warranty or certification of the main device.
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System Integrity: Using the ABB-specified part ensures the entire assembly—contactor plus accessory—functions as a tested system. Mixing brands can lead to unforeseen issues with arc quenching, insulation, or mechanical life.
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Availability and Support: ABB parts are widely available through global distribution networks. Third-party accessories for specific part numbers can be harder to source consistently.
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Documentation and Traceability: A genuine part comes with traceability to ABB’s quality system, which is important for audits in regulated industries. Generic parts often lack this documentation.
Selection Suggestions and Precautions
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Identify the Host Device Precisely: The most critical step is to identify the exact primary device (e.g., contactor model, frame size) this accessory is intended for. The ABB 81943A041-1 is meaningless without knowing its parent component. Check the main device’s manual or data sheet for the correct accessory code.
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Understand the Accessory’s Function: Determine what the accessory does. Is it adding contacts, providing interlocking, or enabling mounting? This ensures you are ordering the correct part for your specific need (e.g., 1NO+1NC contact block vs. 2NO block).
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Verify Physical and Electrical Compatibility: Even within ABB’s range, accessories are not universal. Confirm the mechanical fit (snap-on pattern) and, if it’s a contact block, that its voltage/current rating matches your control circuit requirements.
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Consult Official Documentation: Always refer to the official ABB catalog or data sheet for the primary device to find the validated list of compatible accessories and their corresponding article numbers. Do not rely solely on third-party compatibility charts.
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