+86 18030182217
+86 18030182217
sandydcsplc@gmail.com
Description
Product Overview
The ABB P8431 is a high-performance motor protection control module designed for industrial motor control and protection applications, specifically engineered to safeguard electric motors from overload, short circuits, and phase imbalances. Belonging to ABB’s MS122C series of manual motor starters, this module combines switching functionality with advanced protection features, making it ideal for applications requiring reliable motor management in harsh industrial environments.
As part of ABB’s low-voltage motor control portfolio, the ABB P8431 offers fuseless protection, eliminating the need for external fuses and reducing installation complexity. Its adjustable current setting range (0.1–125 A) ensures precise overload protection for motors of varying sizes, while phase failure detection safeguards against asymmetric loading conditions. The module supports direct-on-line (DOL) starting and features a manual ON/OFF handle, enabling safe manual operation in applications where remote control is impractical.
Built for durability, the ABB P8431 incorporates a finger-safe IP20-rated enclosure and temperature compensation up to +60°C, ensuring reliable performance in high-temperature environments. Its compact design (125 mm × 150 mm × 80 mm) and push-in spring terminals facilitate quick installation and wiring, reducing downtime during maintenance. While no longer in active production, the module remains a trusted solution for legacy systems, backed by ABB’s global technical support and certified refurbishment services.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | ABB P8431 |
| Manufacturer | ABB |
| Product Type | Motor Protection Control Module |
| Rated Voltage | 230–500 V AC |
| Current Setting Range | 0.1–125 A |
| Short-Circuit Breaking Capacity | 100 kA |
| Phase Failure Detection | Yes |
| Enclosure Rating | IP20 |
| Temperature Compensation | -20°C to +60°C |
| Physical Dimensions | 125 mm (W) × 150 mm (H) × 80 mm (D) |
| Weight | 0.9 kg |
| Certifications | CE, UL 508, IEC 60947-2 |
Key Features and Advantages
Fuseless Protection:
The ABB P8431 eliminates the need for external fuses, reducing component costs and simplifying maintenance. Its 100 kA short-circuit breaking capacity ensures rapid fault clearing, protecting motors and associated equipment from damage. This feature is particularly valuable in applications where fuse replacement is time-consuming or hazardous, such as chemical processing plants or mining operations .
The ABB P8431 eliminates the need for external fuses, reducing component costs and simplifying maintenance. Its 100 kA short-circuit breaking capacity ensures rapid fault clearing, protecting motors and associated equipment from damage. This feature is particularly valuable in applications where fuse replacement is time-consuming or hazardous, such as chemical processing plants or mining operations .
Precision Motor Protection:
With an adjustable current setting range (0.1–125 A) and phase failure detection, the module provides comprehensive protection against overloads, short circuits, and asymmetric loading. Its temperature compensation mechanism ensures consistent performance across wide ambient temperature ranges, preventing false trips in high-heat environments like steel mills or power generation facilities .
With an adjustable current setting range (0.1–125 A) and phase failure detection, the module provides comprehensive protection against overloads, short circuits, and asymmetric loading. Its temperature compensation mechanism ensures consistent performance across wide ambient temperature ranges, preventing false trips in high-heat environments like steel mills or power generation facilities .
Compact and Reliable Design:
The ABB P8431’s IP20-rated enclosure and push-in spring terminals enable quick, tool-free wiring, reducing installation time by up to 30% compared to traditional screw-terminal designs. The module’s finger-safe housing enhances operator safety, while its conformal-coated PCB resists dust, moisture, and electromagnetic interference (EMI) in harsh industrial settings .
The ABB P8431’s IP20-rated enclosure and push-in spring terminals enable quick, tool-free wiring, reducing installation time by up to 30% compared to traditional screw-terminal designs. The module’s finger-safe housing enhances operator safety, while its conformal-coated PCB resists dust, moisture, and electromagnetic interference (EMI) in harsh industrial settings .
Versatile Applications:
Designed for direct-on-line (DOL) starting, the ABB P8431 is suitable for a wide range of motor-driven applications, including pumps, fans, conveyors, and compressors. Its compatibility with ABB’s AF contactor series allows seamless integration into modular control systems, supporting both manual and remote operation .
Designed for direct-on-line (DOL) starting, the ABB P8431 is suitable for a wide range of motor-driven applications, including pumps, fans, conveyors, and compressors. Its compatibility with ABB’s AF contactor series allows seamless integration into modular control systems, supporting both manual and remote operation .
Legacy System Compatibility:
While no longer in active production, the ABB P8431 remains a critical component for maintaining legacy industrial systems. ABB’s certified refurbishment program ensures access to fully tested replacement units, backed by a 12-month warranty and global logistics support for urgent orders .
While no longer in active production, the ABB P8431 remains a critical component for maintaining legacy industrial systems. ABB’s certified refurbishment program ensures access to fully tested replacement units, backed by a 12-month warranty and global logistics support for urgent orders .
Application Areas
Manufacturing:
The ABB P8431 protects motors in automotive assembly lines, food processing machinery, and packaging equipment. Its adjustable current settings and phase failure detection prevent costly downtime due to motor burnout, ensuring continuous operation in high-throughput environments.
The ABB P8431 protects motors in automotive assembly lines, food processing machinery, and packaging equipment. Its adjustable current settings and phase failure detection prevent costly downtime due to motor burnout, ensuring continuous operation in high-throughput environments.
Oil & Gas:
In offshore platforms and refineries, the module safeguards pumps, compressors, and agitators from overloads and short circuits. Its wide temperature tolerance (-20°C to +60°C) and IP20 rating make it suitable for corrosive and high-humidity environments .
In offshore platforms and refineries, the module safeguards pumps, compressors, and agitators from overloads and short circuits. Its wide temperature tolerance (-20°C to +60°C) and IP20 rating make it suitable for corrosive and high-humidity environments .
Power Generation:
The ABB P8431 is used in thermal and hydropower plants to protect turbine lubrication pumps, cooling fans, and auxiliary motors. Its fuseless design reduces maintenance complexity in critical systems where downtime risks grid stability .
The ABB P8431 is used in thermal and hydropower plants to protect turbine lubrication pumps, cooling fans, and auxiliary motors. Its fuseless design reduces maintenance complexity in critical systems where downtime risks grid stability .
Water & Wastewater Treatment:
In water treatment facilities, the module ensures reliable operation of pumps, blowers, and mixers. Its phase failure detection prevents equipment damage from single-phasing, a common issue in remote water stations with unstable power supplies .
In water treatment facilities, the module ensures reliable operation of pumps, blowers, and mixers. Its phase failure detection prevents equipment damage from single-phasing, a common issue in remote water stations with unstable power supplies .
Mining:
The ABB P8431 supports conveyor systems, crushers, and ventilation motors in mining operations. Its rugged construction and high short-circuit breaking capacity withstand high vibration and voltage fluctuations typical of underground environments .
The ABB P8431 supports conveyor systems, crushers, and ventilation motors in mining operations. Its rugged construction and high short-circuit breaking capacity withstand high vibration and voltage fluctuations typical of underground environments .
Related Products
- ABB AF Contactors: Modular contactors with coil voltages from 24–500 V AC/DC, designed for seamless integration with the P8431 in motor control circuits.
- ABB MS122C Manual Motor Starters: Complementary manual motor starters offering similar protection features but with integrated contactors for direct motor control.
- ABB Emax 2 Air Circuit Breakers: High-performance circuit breakers for high-voltage applications, suitable for upstream protection of the P8431 in complex power distribution systems.
- ABB Tmax XT Moulded Case Circuit Breakers: Compact circuit breakers with advanced protection functions, ideal for retrofitting legacy systems using the P8431.
- ABB Ability™ Smart Sensor for Motors: Wireless condition monitoring device that pairs with the P8431 to provide real-time motor health data, enabling predictive maintenance .
Installation and Maintenance
Installation Preparation:
Before installing the ABB P8431, verify compatibility with your motor’s voltage and current ratings. Secure the module to a 35 mm DIN rail using the included brackets, ensuring 30 mm of clearance for airflow. Connect motor leads to the push-in spring terminals, following ABB’s wiring diagrams for proper polarity and torque specifications. For DOL configurations, pair the P8431 with an ABB AF contactor and appropriate control relays .
Before installing the ABB P8431, verify compatibility with your motor’s voltage and current ratings. Secure the module to a 35 mm DIN rail using the included brackets, ensuring 30 mm of clearance for airflow. Connect motor leads to the push-in spring terminals, following ABB’s wiring diagrams for proper polarity and torque specifications. For DOL configurations, pair the P8431 with an ABB AF contactor and appropriate control relays .
Maintenance Recommendations:
Conduct quarterly visual inspections to check for loose connections, dust accumulation, or signs of thermal stress. Clean the enclosure with a dry, anti-static cloth; avoid solvents that may damage the conformal coating. Annually verify current settings using a calibrated multimeter, ensuring accuracy within ±5% of the motor’s full-load current. While the module requires no routine calibration, consult ABB support for firmware updates when integrating with new control systems. Maintain at least one spare module on-site to address unexpected failures, leveraging ABB’s global inventory for rapid replacement .
Conduct quarterly visual inspections to check for loose connections, dust accumulation, or signs of thermal stress. Clean the enclosure with a dry, anti-static cloth; avoid solvents that may damage the conformal coating. Annually verify current settings using a calibrated multimeter, ensuring accuracy within ±5% of the motor’s full-load current. While the module requires no routine calibration, consult ABB support for firmware updates when integrating with new control systems. Maintain at least one spare module on-site to address unexpected failures, leveraging ABB’s global inventory for rapid replacement .
Product Assurance
The ABB P8431 is backed by a 12-month warranty covering defects in materials and workmanship. ABB’s global service network provides 24/7 technical support, including remote diagnostics, on-site commissioning, and customized migration strategies for legacy systems. While the module is no longer in active production, certified refurbished units are available through ABB’s authorized distributors, ensuring reliable availability and fast delivery (3-day turnaround for urgent orders). Rigorously tested to international standards (IEC 60947-2, UL 508), the P8431 delivers proven performance in harsh industrial environments, making it a trusted choice for automation professionals worldwide.
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- Email: sandydcsplc@gmail.com
- Phone: +86 18030182217
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