140G-K-ELP Allen‑Bradley Residual current device

Description

140G-K-ELP Allen‑Bradley Residual current device

Product Dimensions：

Product Detailed Description

The Allen-Bradley 140G-K-ELP is an Earth Leakage Protector (ELP) accessory designed for integration with Bulletin 140G-K frame Molded Case Circuit Breakers (MCCBs). It provides residual current protection to detect and trip on ground faults or leakage currents, enhancing electrical safety in low-voltage power distribution systems. This accessory is a plug-in module that installs on the side of the 140G-K frame breaker, compatible with thermal-magnetic or electronic trip units. It is part of Rockwell Automation’s 140G series, which offers global compliance (UL, CSA, IEC, CCC) for reliable overcurrent and fault protection. The ELP module includes a test button for functional verification and is engineered for use in industrial environments where ground fault protection is critical to prevent equipment damage or hazards.

Product Parameters

The 140G-K-ELP is tailored for the K-frame (rated up to 400 A). Key specifications include:

Note: Full electrical parameters are coordinated with the host 140G-K breaker; consult Rockwell Automation for exact sensitivity settings.

Product Advantages

• Enhanced Safety: Detects low-level ground faults (as low as 30 mA) to prevent electric shock, fire risks, and equipment downtime, complying with global standards like IEC 60364.
• Seamless Integration: Plug-and-play design with 140G-K frames minimizes installation time and supports modular upgrades without replacing the entire breaker.
• High Reliability: Proven interrupting ratings up to 200 kA ensure robust performance in demanding environments; selective coordination isolates faults without cascading trips.
• Cost-Effective Protection: Combines earth leakage with overcurrent protection in one unit, reducing panel space and wiring complexity compared to separate RCDs.
• Global Versatility: Multi-standard certifications (UL/CSA/IEC) allow use in North American, European, and Asian markets, with multilingual installation guides.
• Easy Maintenance: Built-in test button and visual indicators simplify periodic verification, extending system lifespan.

Precautions and Notices

• Safety First: To prevent electrical shock or injury, always disconnect power sources before installing, servicing, or testing the ELP. Use appropriate PPE and follow lockout/tagout procedures.
• Installation Guidelines: Install in a suitable enclosure free from contaminants (dust, moisture). Torque connections precisely (e.g., 1.2 Nm for plugs) to avoid loose contacts. For through-door applications, ensure door thickness ≤25 mm (0.98″) if using escutcheons.
• Testing Protocol: Press the test button (‘T’) only with the unit powered and system de-energized downstream; verify breaker opens fully. Perform monthly tests per site safety protocols—failure to trip indicates malfunction.
• Environmental Limits: Avoid exposure to corrosive atmospheres or temperatures outside -25°C to +70°C. Do not exceed rated fault currents; selectivity may fail if prospective short-circuit > I_s (selectivity limit, e.g., 5–85 kA depending on setup).
• Compatibility Check: Ensure host breaker is 140G-K frame with compatible trip unit (LSI/LSIG). Not for reverse-feed unless specified. Refer to publication 140G-IN (installation instructions) for wiring diagrams.
• Warranty Note: Improper handling voids warranty; consult Rockwell Automation for repairs.

Product Applications

The 140G-K-ELP is ideal for industrial and commercial low-voltage (up to 480 V) systems requiring ground fault protection alongside overcurrent safeguarding:

• Power Distribution Panels: Main or branch circuit protection in factories, data centers, and hospitals to isolate leakage faults quickly.
• Motor Control Centers (MCCs): Safeguards motors and drives from ground faults in manufacturing lines, HVAC systems, and pumping stations.
• Critical Infrastructure: Used in emergency lighting, fire alarms, and standby generators where personnel safety and uptime are paramount.
• Commercial Buildings: Elevators, lighting circuits, and EV charging stations to meet NEC/NFPA 70E requirements for GFCI-like protection.
• Renewable Energy: Solar inverters and wind turbine controls, ensuring fault isolation in grounded systems.
• Marine/Offshore: Harsh environments with high humidity, leveraging IP-rated enclosures for reliable operation.

For detailed configurations or simulations, use Rockwell’s Circuit Breaker Simulator Tool. Always verify with site-specific engineering for optimal selectivity.

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