For facilities running on 277/480-volt three-phase power, selecting robust panels and metering solutions matters for reliability and energy management. The following curated products cover surge protection, metering, submetering, and main distribution needs suitable for indoor and outdoor environments. Each option supports Wye or Delta configurations, integrates with common building automation systems, and is designed for commercial or industrial applications. Below, you’ll find concise details and how they fit into a modern electrical infrastructure.
| Product | Brand | Model |
|---|---|---|
| Surge Panel for 277/480V 3-Phase | Leviton | 32277-DY3 |
| Indoor Meter Kit 277/480V 3P4W | Leviton | 2000 Series 2000 |
| UL kWh Smart Submeter Kit | DAE | P206-400-S |
| CAM Lock Panel, 400A 3-Phase | Power Assemblies | Series 16 CAM |
| 7-Mode Module Replacement | Leviton | 7277-M3S |
Leviton 277/480 Volt Surge Panel, 3-Phase Wye or Delta
The Leviton 32277-DY3 surge panel is designed for 277/480-volt three-phase systems with optional Wye or Delta wiring configurations. It features reduced noise filtering for compatibility with modern home controls and a NEMA Type 3R enclosure suitable for indoor and outdoor installations. The unit is built to handle high surge currents (80Ka L-N max) and supports three-phase models configured for either WYE or Delta AC systems. This versatility makes it suitable for mixed-use facilities that require reliable surge protection and flexible grounding options in variable industrial environments.
Leviton Series 2000 Indoor Meter Kit For 277/480V 3P4W
This indoor meter kit provides essential metering for 277/480V three-phase four-wire systems. It includes three solid-core CTs and offers optional kWh and demand measurement, helping facilities monitor energy usage and peak demand. The kit aligns with ANSI C12.1 standards and features both an Isolated Pulse Output and an RS-485 Serial Port (Modbus Native) for straightforward integration with AMR and BAS systems. Its modular design is suited for buildings seeking scalable energy management without compromising reliability.
DAE P206-400-S UL kWh Smart Submeter Kit
The DAE P206-400-S kit is a UL/cUL listed 277/480V, three-phase submeter with three CTs (inner diameter 1.38″). It supports both 3-phase 4-wire and 3-phase 3-wire configurations and is designed for cloud-ready metering via the CC2030 gateway. It enables real-time energy data, monthly kWh, and TOU billing with cloud reporting. The included hardware supports inline connection to panels and is suitable for multi-tenant properties or large commercial installations seeking accurate, remotely accessible energy data without extensive IT setup.
Power Assemblies 5-Position CAM Lock Panel
The Power Assemblies five-position CAM lock panel is rated for 400A and 3-phase 277/480V operation. It features threaded post connections, NEMA 3R caps, and lanyards for enhanced safety and weather resistance in outdoor environments. The pre-assembled CAM panels reduce on-site labor and time, enabling quicker deployment for temporary power applications. Its higher-density configuration supports more connections per square foot, making it suitable for event setups, construction sites, and flexible industrial workspaces requiring rapid, reliable power distribution.
Leviton 7277-M3S 277V 7-Mode Module
Leviton’s 7277-M3S module is designed for main distribution panels and offers hybrid suppression circuitry with built-in redundancy that protects all three phases. Its modular design allows for straightforward replacement of individual modules, reducing downtime during maintenance. This 277V 7-mode module is compatible with three-phase Wye systems and supports 4-wire and grounding configurations, making it a practical upgrade component for facilities seeking robust surge suppression and easy serviceability.
Siemens S4260B3200 Three-Phase ES Series Load Center
The Siemens S4260B3200 ES Series load center provides a three-phase, four-wire configuration with a main breaker option and 200A capacity across 42 spaces and 60 circuits. Aluminum bus construction supports durable power distribution, while UL listing ensures compliance with safety and performance standards. The unit accepts approved plug-in style Siemens or Murray breakers, offering flexibility for maintenance and future expansion within commercial or industrial electrical systems.
Buying Guide
Key considerations when choosing 277/480V three-phase panels and related metering equipment include system topology, enclosure location, and future scalability. First, confirm whether your facility uses a Wye or Delta configuration, and determine the number of spaces and circuits required to support anticipated loads. Enclosures should be rated for the environment (indoor vs. outdoor) and weather exposure, ideally with a NEMA rating that matches site conditions. Surge protection features, such as high surge current ratings and compatibility with site controls, help safeguard critical equipment and reduce nuisance outages.
Metering and submetering options are crucial for energy management. Look for devices that offer kWh measurement, demand tracking, and compatibility with building automation or cloud-based dashboards. RS-485 Modbus, pulse outputs, and cloud gateways facilitate data collection, fault detection, and billing accuracy. For contractors, modular components that simplify maintenance and replacements reduce downtime and labor costs. Finally, ensure certification compliance (ANSI C12.1, UL/cUL, UL Listed) to meet safety and regulatory requirements for commercial and industrial installations.
In summary, the reviewed products cover critical needs in surge protection, metering, submetering, and main-distribution readiness for 277/480V three-phase systems. Choosing a mix that includes a robust surge panel, a flexible meter kit, a cloud-ready submeter, a high-density CAM panel, and a modular protection module provides a balanced, scalable approach for most industrial facilities. Evaluate installation environment, connectivity needs, and maintenance capabilities to select the best combination for long-term reliability.