Eaton 9355-20/30 3-BKR MBP W 36-POLE FOR GBHW W TVSS - 208 V AC

The Eaton 9355-20/30 3-BKR MBP W 36-POLE FOR GBHW W TVSS is a high-performance main breaker panelboard designed for 208 V AC electrical systems. Built to meet the demands of commercial and industrial environments, this unit combines reliable power distribution with advanced surge protection to safeguard valuable equipment and maintain uptime. Engineered to fit within Eaton GBHW enclosures, it delivers a robust and scalable solution for facilities that require a solid foundation for branch circuits while ensuring easy maintenance and serviceability. With a 36-pole configuration, it offers ample capacity for current needs and future expansion, all wrapped in a compact, durable, and code-compliant package. The integrated TVSS (Transient Voltage Surge Suppressor) protection helps clamp transient voltages and defend sensitive electronics from damaging spikes, making it an ideal choice for data centers, manufacturing floors, and critical infrastructure installations. Fueled by Eaton’s longstanding reputation for quality, the 9355-20/30 MBP blends precise engineering, corrosion-resistant construction, and practical design features that streamline installation, operation, and service over the life of the system.

• Professional-grade MBP design with 3-BKR configuration delivers a dependable main breaker panelboard that supports scalable branch circuit distribution in a 208 V environment.
• 36-pole layout provides substantial capacity for current loads and future expansion, while maintaining a compact footprint suitable for crowded mechanical rooms and equipment closets.
• Integrated TVSS surge protection adds a first line of defense against transient overvoltages, helping protect motors, controllers, servers, and other sensitive devices from surge damage.
• GBHW enclosure compatibility ensures a secure, code-compliant installation with durable steel construction, easy access for maintenance, and compatibility with Eaton’s accessory ecosystem.
• Rugged, field-friendly design emphasizes ease of installation, labeling, and servicing, backed by Eaton’s global support network and a long service life in demanding environments.

Technical Details of Eaton 9355-20/30 3-BKR MBP W 36-POLE FOR GBHW W TVSS - 208 V AC

• Voltage rating: 208 V AC
• Pole count and configuration: 36-pole arrangement within a 3-BKR MBP framework
• Enclosure compatibility: GBHW family for secure, code-compliant installation
• Surge protection: Integrated TVSS module for transient suppression
• Panel type: Main Breaker Panelboard (MBP) designed for reliable distribution and serviceability

How to install Eaton 9355-20/30 3-BKR MBP W 36-POLE FOR GBHW W TVSS

Before beginning, verify that the installation location is suitable for a 208 V AC MBP in a GBHW enclosure, and confirm that all power sources are de-energized in accordance with local electrical codes. Gather appropriate tools, hardware, and safety equipment, and review the manufacturer’s installation manual for model-specific instructions and clearances. Plan the layout to accommodate wire routing, labeling, and access for future maintenance. Ensure that cooling and ventilation requirements are met so the unit operates at safe temperatures in its intended environment.

Step 1: Mounting and enclosure preparation. Secure the GBHW enclosure to a structurally sound surface or equipment rack as specified by the installation manual. Verify the mounting rails and knockouts align with the MBP dimensions, and confirm that the enclosure provides sufficient clearance for wiring, torque requirements, and future expansion. Clean the interior to remove dust and debris before panel installation.

Step 2: Position the MBP modules. With the GBHW enclosure prepared, position the Eaton 9355-20/30 MBP assembly within the enclosure. Align mounting points and fasten the MBP firmly to the enclosure rails using the recommended hardware. Ensure there is adequate clearance for bus bars, lugs, and live components once the main breaker is installed.

Step 3: Connect the main and branch conductors. Install the main breaker or main lugs per the MBP configuration, following the manufacturer’s torque specifications and conductor size requirements. Route the incoming feeder conductors to the appropriate lugs and connect branch circuits to their designated spaces, keeping conductors neatly organized and labeled for future maintenance. Maintain proper clearances to reduce temperature rise and allow safe access to breakers and TVSS modules.

Step 4: Install and connect the TVSS module. Attach the integrated surge protection device in accordance with the installation manual, ensuring proper grounding and bonding per local codes. Verify that the TVSS module is correctly wired to monitor line and neutral connections and that any status indicators reflect proper operation after power is restored.

Step 5: Inspection, labeling, and testing. Inspect all connections for tightness and insulation integrity. Label each circuit position clearly, including any special-purpose circuits or critical loads. Reconnect power and perform functional checks, including a visual inspection of the bus connection, a trip test of the main breaker, and a functional test of the TVSS to confirm surge protection activates as intended. Document all settings and test results for reference and compliance records.

Frequently asked questions

• Q: What is the Eaton 9355-20/30 3-BKR MBP W 36-POLE FOR GBHW W TVSS? A: It is a main breaker panelboard designed for 208 V AC systems, featuring a 36-pole distribution layout, integrated TVSS surge protection, and compatibility with GBHW enclosures for robust electrical distribution in commercial and industrial facilities.
• Q: What does 36-pole mean in this context? A: It indicates the panelboard has 36 positions available to accommodate branch circuit breakers, providing ample capacity for current loads and potential future expansion within the GBHW enclosure system.
• Q: What is TVSS, and why is it important? A: TVSS stands for Transient Voltage Surge Suppressor. It helps mitigate voltage spikes from lightning, switching events, and other transients, protecting connected equipment and reducing downtime.
• Q: Which environments is this MBP suited for? A: It is well-suited for commercial and industrial environments where reliable 208 V AC power distribution is essential, including data centers, manufacturing floors, and critical facility infrastructure.
• Q: How does MBP differ from a standard distribution panel? A: An MBP (Main Breaker Panelboard) integrates a main protective device and a modular approach for branch circuits, designed for streamlined service, easier replacement, and compatibility with Eaton’s MBP accessories for customization and expansion.

With the Eaton 9355-20/30 3-BKR MBP W 36-POLE FOR GBHW W TVSS, facilities gain a distribution solution that emphasizes protection, scalability, and reliability. The combination of a robust MBP design, a 36-pole capacity, and integrated surge suppression makes it a practical choice for operators who need consistent performance in demanding environments. Its compatibility with GBHW enclosures simplifies installation and service, while the 208 V AC specification aligns with many commercial power systems. Operators benefit from straightforward maintenance routines, clear labeling for circuits, and the assurance that transient voltages won’t compromise essential equipment. For installers and facility managers seeking a reputable, long-lasting distribution solution, this Eaton panelboard delivers the balance of protection, capacity, and ease of use that modern electrical systems require. By selecting this MBP, you are investing in a trusted Eaton product designed to support reliability, uptime, and efficiency across a wide range of applications.