WGL-1000/3P Heavy-Duty 3-Pole Load Break Disconnect Switch

Managing and securing high-current power paths is a fundamental requirement in industrial facilities, data center power distribution, and large commercial systems. The WGL-1000/3P Heavy-Duty Load Break Disconnect Switch is engineered specifically for this critical task. As a 1000A, 3-pole device, it delivers safe, visible isolation and reliable manual switching for main power feeders, large motor circuits, and busbar sections. It serves as the primary point of safety for maintenance, a manual control point for circuit energization, and a robust isolator that meets the demands of the most strenuous electrical environments, ensuring operational control and personnel safety at the heart of your power system.

Core Engineering & Performance Advantages

1. High-Current Switching and Visible Isolation
Feature: Rated for making and breaking 1000A at its operational voltage. The robust switching mechanism ensures quick, positive action, while the design provides a clear, visible air gap between contacts in the “OFF” position.
Benefit: Enables safe manual control and definitive isolation of high-power circuits. This visible break is a critical safety feature that complies with international standards for working on electrical equipment, providing physical proof of de-energization.

2. Engineered for Industrial Duty & Longevity
Feature: Constructed with heavy-duty, silver-alloy main contacts for minimal resistance and exceptional arc withstand capability. Features reinforced terminals designed for direct busbar or large cable connections (e.g., up to 2x 240mm² per phase).
Benefit: Delivers unmatched durability and reliability under continuous high current. Reduces heat generation, minimizes voltage drop, and ensures stable performance over thousands of operational cycles in demanding conditions.

3. Enhanced Safety and Security Mechanism
Feature: Incorporates a high-integrity rotary handle operation with a definitive three-position mechanism (ON, OFF, and often a padlocking position). The handle accepts multiple padlocks to secure the switch in the OFF position.
Benefit: Facilitates compliant lockout/tagout (LOTO) procedures for work teams. Prevents accidental re-energization, which is paramount for safety when maintaining downstream equipment like large compressors, pumps, or production lines.

4. Optimized for Easy Integration and Service
Feature: Designed for flexible mounting in switchgear compartments or as a standalone unit. The operating mechanism can be mounted remotely from the contact assembly via an extension kit (optional), allowing for front-of-panel operation.
Benefit: Simplifies panel design and enhances operator safety by allowing installation in the most space-efficient and ergonomic configuration. Eases maintenance access to the contacts and connections.

Technical Specifications

Primary Applications

• Main Power Feeder Disconnect: As the primary isolator for 800-1250kVA transformer secondaries in industrial plants.

• Large Motor & Drive Isolation: For safe isolation of high-power motors, centrifugal chillers, crushers, and large conveyor drives.

• Busbar Sectionalizer: To manually isolate sections of a high-current busbar system within switchgear or power distribution units (PDUs).

• Maintenance Bypass Switch: In systems with variable frequency drives (VFDs) or automatic transfer switches (ATS), providing a robust, manual maintenance bypass path.

Value Proposition

• Uncompromising Safety for High-Power Systems: Provides the definitive isolation required by safety codes, protecting personnel working on high-value, high-risk equipment.

• Operational Control and Flexibility: Grants operators direct, manual control over major power circuits for startup, shutdown, and operational routing.

• Robustness for Critical Infrastructure: Built to withstand the electrical and mechanical stresses of industrial environments, ensuring long-term reliability and reduced downtime.

• Foundation for Safe Maintenance: The cornerstone of any effective electrical safety program for facilities with large machinery and high-power distribution.

Installation & Operational Guidance

• Professional Installation Mandatory: Must be installed by certified electricians following all applicable electrical codes (e.g., NEC, IEC 60364). Proper torque settings for terminals are critical.

• Coordination with Protective Devices: This is a switching and isolation device, not a circuit breaker. It must be installed downstream of appropriate short-circuit and overcurrent protective devices (e.g., fuses or circuit breakers).

• Routine Maintenance: Periodic inspection of contacts, connections, and mechanical operation is recommended as part of a preventive maintenance schedule.