ABB S800-AUXALT I/O module

ABB S800-AUX/ALT Auxiliary Contact/Signal Switch Overview

The ABB S800-AUX/ALT (often seen as S800-AUXALT) is an electronic accessory designed for ABB's high-performance S800 series circuit breakers. Its primary function is to provide electrical signaling of the operational status of these circuit breakers. It combines an auxiliary contact (AUX) and a signal contact (ALT) to offer a reliable solution for monitoring and controlling electrical systems, enhancing safety and efficiency.

Product Detailed Description

• Function:

• Manual ON/OFF operations of the breaker.

• Trips due to thermal overloads (overcurrent protection).

• Trips due to magnetic overloads (short-circuit protection).

• Other automatic trip conditions of the circuit breaker.

• Auxiliary Contact (AUX): This contact switches synchronously with the main pole contacts of the circuit breaker. It provides a signal indicating the current state of the circuit breaker (e.g., open or closed).

• Signal Contact (ALT): This contact is specifically designed to signal various trip conditions of the circuit breaker. It detects and signals triggers resulting from:

• The combined functionality allows for comprehensive remote monitoring of the circuit breaker's status and fault conditions within a larger control or SCADA system.

• Features:

• Combined Functionality: Integrates both auxiliary and signal contacts into a single unit.

• Synchronous Switching: The auxiliary contact operates in sync with the main breaker poles.

• Trip Indication: Clearly distinguishes between a manual operation and an automatic trip due to a fault (thermal/magnetic overload).

• High Performance Circuit Breaker Compatibility: Specifically designed for integration with ABB's S800 series high-performance circuit breakers.

• Safety and Efficiency: Essential component for enhancing safety and operational efficiency in electrical applications by providing critical status feedback.

• Electronic Design: Indicates it's likely a solid-state or electronically controlled contact, offering potentially faster response and higher reliability than purely mechanical auxiliary switches.

Product Parameters

Since this is an accessory for circuit breakers, its parameters will relate to its signaling capabilities and compatibility rather than main circuit ratings. Specific values might require consulting the detailed technical data sheet for the S800-AUX/ALT.

• Compatibility: Designed for ABB S800 series High-Performance Circuit Breakers.

• Contact Type: Typically dry contacts (potential-free) for both AUX and ALT functions.

• Number of Contacts: Usually specified as a certain number of NO (Normally Open) and NC (Normally Closed) contacts for both AUX and ALT functions. (e.g., 1 NO + 1 NC for AUX, 1 NO for ALT trip indication).

• Rated Voltage/Current (for contacts): These are usually low voltage/current ratings suitable for signaling circuits (e.g., 24VDC, 110VAC control voltage, with corresponding low current ratings, e.g., < 1A).

• Mounting: Typically clips into a designated slot on the side of the S800 circuit breaker.

• Approvals: Likely carries relevant electrical standards approvals (e.g., IEC, UL, CSA if applicable to the region).

Product Advantages

• Enhanced Monitoring: Provides detailed and reliable information about the circuit breaker's operational state and specific trip causes.

• Improved System Diagnostics: Differentiates between manual operations and automatic trips, allowing for quicker and more accurate fault finding.

• Increased Safety: Critical for safety interlocking and ensuring that machinery or processes are correctly shut down or prevented from starting when a breaker trips.

• Seamless Integration: Designed to integrate perfectly with ABB S800 series circuit breakers, ensuring easy installation and compatibility.

• Automation Capability: Enables remote monitoring and control system integration (e.g., SCADA, DCS, PLC) for automated electrical system management.

• Reliability: As an ABB product, it's designed for industrial robustness and long-term reliable operation.

Precautions

• Correct Circuit Breaker Compatibility: Ensure the S800-AUX/ALT is compatible with the specific model and frame size of the ABB S800 series circuit breaker it is to be installed with.

• Proper Installation: Install the auxiliary/signal switch correctly into the designated slot on the circuit breaker, following ABB's specific instructions. Incorrect installation can lead to unreliable signaling or damage.

• Wiring: Connect the signaling wires correctly to the appropriate terminals. Pay attention to the specified voltage and current ratings for the auxiliary and signal contacts.

• De-energize Before Installation: Always ensure the circuit breaker and associated power circuits are completely de-energized and locked out before attempting to install or remove the S800-AUX/ALT switch.

• Functional Testing: After installation, perform thorough functional tests to verify that both the auxiliary and signal contacts operate correctly and provide the expected signals under various breaker states (ON, OFF, tripped by thermal, tripped by magnetic).

• Safety Standards: Ensure that the integration of the S800-AUX/ALT into your control and safety circuits complies with all relevant local and international electrical and safety standards (e.g., IEC 60947, NFPA 79).

Product Applications

The ABB S800-AUX/ALT is primarily used in electrical distribution systems where ABB S800 series circuit breakers are employed, for applications requiring remote status indication and fault analysis.

• Industrial Power Distribution: In factories, plants, and commercial buildings to monitor the status of main distribution and feeder circuit breakers.

• Motor Control Centers (MCCs): To provide feedback on the status of motor feeder circuit breakers.

• Switchgear and Panel Boards: For centralized monitoring and control of electrical circuits.

• Building Management Systems (BMS): Integrating circuit breaker status into overall building automation and energy management systems.

• SCADA/DCS Systems: Feeding circuit breaker status and trip information to supervisory control and data acquisition systems or distributed control systems for comprehensive plant monitoring and control.

• Safety Interlocks: Providing critical status signals for safety interlocking circuits, ensuring equipment cannot operate under unsafe conditions (e.g., if a protective circuit breaker has tripped).

• Energy Management Systems: Monitoring load status and potential fault conditions to optimize energy consumption and react to power disturbances.

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