WGL-250/4P Compact 4-Pole Load Break Disconnect Switch

For a wide range of commercial, light industrial, and specialized applications that require safe, manual isolation and switching of standard three-phase circuits—including the neutral conductor—a balance of performance, safety, and space efficiency is key. The WGL-250/4P Compact Load Break Disconnect Switch is engineered to meet this need. As a 250A, 4-pole device, it provides essential visible isolation and reliable manual switching for feeder circuits, equipment power supplies, and control panels. It delivers the critical safety function required for maintenance while offering an economical and space-conscious solution for system designers and panel builders.

Core Features & Practical Benefits

1. Reliable Circuit Isolation and Switching
Feature: Rated to make and break 250A, this switch provides a secure means to manually control and isolate circuits. The mechanism ensures a positive “ON” and “OFF” action, establishing a clear, visible air gap when in the open position.
Benefit: Enables safe de-energization of equipment for servicing and provides a definitive point of isolation, which is a fundamental requirement for electrical safety protocols and compliance with workplace safety regulations.

2. Compact, Panel-Friendly Design
Feature: Engineered with a space-saving footprint optimized for mounting in standard industrial enclosures and distribution boards. The efficient layout of all four poles minimizes the required panel depth and width.
Benefit:** Maximizes usable panel space, allowing for higher density layouts or the inclusion of additional components. This makes it an ideal choice for retrofit projects or compact panel designs where space is at a premium.

3. Cost-Effective Safety and Security
Feature: Constructed with high-conductivity, tin-plated copper alloy contacts for reliable performance. Incorporates a simple yet effective rotary handle with integral padlock provision (typically for 1-3 padlocks) to secure the switch in the “OFF” position.
Benefit:** Provides essential safety features without unnecessary complexity or cost. The padlock provision ensures compliance with Lockout/Tagout (LOTO) procedures, protecting maintenance personnel at a highly competitive price point.

4. Versatile Application Range
Feature: The 4-pole design (L1, L2, L3, N) makes it suitable for systems where the neutral must be switched alongside the phases, such as in certain generator transfer setups, UPS bypass circuits, or equipment with sensitive single-phase controls.
Benefit:** Offers application flexibility beyond standard 3-pole isolators, addressing specific requirements for complete circuit isolation in modern mixed-load environments, including some solar PV combiner boxes or small commercial backup systems.

Technical Specifications

Primary Applications

• Branch Circuit Disconnect: In distribution boards for isolating groups of loads, such as small workshop machinery, HVAC units, or lighting panels.

• Equipment Isolation: As a dedicated local disconnect for pumps, compressors, conveyors, or other industrial equipment rated up to ~125kW at 400V.

• Renewable Energy Systems: As an isolating switch in solar inverter combiner boxes or small wind turbine control panels.

• Control Panel Main Switch: To provide power isolation for PLC panels, motor control centers (MCC) buckets, or automation cabinets.

• Manual Transfer/Bypass: In smaller UPS or generator systems requiring a manual maintenance bypass with neutral switching.

Value Proposition

• Essential Safety at an Accessible Price: Delivers the critical visible isolation function required for safe electrical work, making compliance affordable for a wider range of projects.

• Space-Saving Efficiency: Its compact design allows for flexible panel layouts, helping to control overall enclosure size and cost.

• Reliable Performance for Standard Duties: Built to deliver consistent, long-lasting performance in typical commercial and light industrial environments, offering excellent value over its lifecycle.

• Simplified Specification & Installation: A standard, widely applicable product that is easy to specify, source, and install, reducing engineering and labor time.

Installation & Usage Notes

• Qualified Installation: Must be installed by a competent person in accordance with local wiring regulations.

• Protective Device Coordination: This is a switching and isolation device. It must be protected against short-circuits by an upstream fuse or circuit breaker of appropriate rating.

• Load Consideration: Well-suited for resistive and standard motor loads within its rating. For highly inductive or frequent switching applications, consult the manufacturer’s guidelines.