WGL-1000/4P Industrial Power Disconnect Switch

In the core of high-capacity power distribution—where systems demand not only the switching of three phases but also the secure isolation of the neutral conductor—compromise is not an option. The WGL-1000/4P Industrial Power Disconnect Switch is engineered as the definitive solution for this critical tier. As the flagship 1000A, 4-pole model in the WGL series, it is designed for absolute safety, unmatched durability, and complete control in applications such as large generator automatic transfer switch (ATS) bypass, main incoming isolation for facilities with significant single-phase load components, and secure disconnection for mega-watt scale equipment. It provides the physical and visible assurance that every conductor—L1, L2, L3, and N—is securely isolated, forming the cornerstone of electrical safety in the most powerful circuits.

Core Engineering Excellence & Operational Superiority

1. Complete High-Current Isolation with Neutral Security
Feature: A true 4-pole switching mechanism rated for making and breaking 1000A on each pole, including the neutral. The neutral pole is identically rated and constructed to handle possible imbalance currents and provide full circuit separation.
Benefit: Eliminates all risks associated with a shared or unswitched neutral in three-phase four-wire systems. This is critical for preventing objectionable neutral currents, ground loops, and ensuring safe maintenance on systems with sensitive electronics or mixed single/three-phase loads downstream of the isolation point.

2. Uncompromising Visible-Break Safety & Access Control
Feature: Features a high-integrity rotary operating mechanism with a pronounced, visibly verified air gap in the “OFF” position. The heavy-duty handle assembly is fortified with a multi-padlock chamber capable of accepting multiple padlocks (typically 3 or more) to enforce collective Lockout/Tagout (LOTO).
Benefit:** Provides the highest level of personnel safety assurance. The visible break offers irrefutable proof of de-energization, while the multi-lock system ensures that no individual can re-energize equipment until all maintenance work is complete and all personal locks are removed.

3. Industrial-Grade Construction for Maximum Reliability
Feature: Built with massive, forged silver-plated copper alloy main contacts and arc-quenching chambers designed to manage the energy of breaking high currents. Features heavy-duty, plated steel terminals engineered for direct busbar connection or the termination of dual large-diameter cables per phase.
Benefit:** Ensures extremely low contact resistance, minimal heating, and exceptional electrical endurance. The robust construction guarantees reliable operation and mechanical stability, even when subjected to the magnetic forces of high short-circuit currents (with high Icw rating).

4. Designed for Seamless Integration in High-Power Switchgear
Feature: Engineered for flexible integration into custom switchgear, motor control centers (MCCs), or as a standalone wall-mounted unit. Optional features include auxiliary contacts (NO/NC) for remote status signaling, shrouded terminals for added safety, and remote operating handle extensions.
Benefit:** Offers maximum design flexibility for system integrators. Allows the switch to be seamlessly incorporated into complex control and monitoring systems, enhancing both functionality and safety of the overall power distribution architecture.

Technical Specifications

Primary Applications

• Main & Generator Switching: As the manual bypass/isolation switch for 800-1600kVA ATS systems in data centers, hospitals, and industrial plants.

• Critical Infrastructure Main Disconnect: For primary isolation in water treatment plants, transportation hubs, and large commercial complexes with substantial single-phase infrastructure.

• Large UPS & PDU Maintenance Bypass: Providing a secure, manual maintenance path for uninterrupted power supply systems and power distribution units.

• Heavy Industrial Machine Isolation: As the primary safety disconnect for very large processing equipment, industrial furnaces, or test benches exceeding 500kW.

Value Proposition

• Absolute Safety for High-Value Assets and Personnel: Provides the definitive, code-compliant isolation point required to safely service multi-megawatt systems, protecting both human life and multi-million dollar capital equipment.

• Unmatched System Integrity: The fully-rated 4-pole design ensures no part of the electrical circuit remains as a hidden risk during maintenance, guaranteeing complete system isolation.

• Engineered for the Longest Service Life in Demanding Conditions: Constructed with premium materials and designed for the rigors of industrial environments, minimizing total cost of ownership through exceptional reliability.

• The Professional’s Choice for Critical Power: Specified by engineers and facility managers who cannot afford compromise, serving as the benchmark for safety and performance in high-current isolation.

Installation & Commissioning Guidance

• Professional Engineering & Installation Required: Installation must be overseen by qualified electrical engineers and performed by certified technicians. Proper busbar design, thermal management, and mechanical support are critical.

• Mandatory Coordination with Upstream Protection: This is an isolation device. It must be protected by appropriately rated and coordinated upstream short-circuit protective devices (e.g., current-limiting fuses or high-breaking capacity circuit breakers).

• Initial & Periodic Inspection: Requires torque verification of all connections upon installation and as part of a rigorous preventive maintenance schedule.