APC by Schneider Electric MGE Galaxy 3500 Extended RUN Enclosure with Mccb with 6 - G35TBXR6B6

APC by Schneider Electric G35TBXR6B6 Galaxy 3500 Extended Run Battery Enclosure with MCCB

Overview

The APC by Schneider Electric G35TBXR6B6 is an extended run battery enclosure designed for the Galaxy 3500 UPS series, supporting 3-phase installations in the 10 to 40 kVA range. If your facility runs critical loads — data center racks, security infrastructure, industrial control systems — where standard runtime falls short during extended outages, this enclosure pairs with a compatible Galaxy 3500 UPS frame to add the battery capacity needed to bridge the gap. The integrated Molded Case Circuit Breaker (MCCB) provides overcurrent protection at the enclosure level, simplifying wiring and reducing the need for external panel components in your electrical design.

The G35TBXR6B6 ships in a gray steel enclosure measuring 59.02 H x 20.59 W x 36.42 D inches — a floor-standing form factor sized for data center rows or dedicated electrical rooms where a full-height battery cabinet is the standard deployment. Its gray color family coordinates with the broader Galaxy 3500 product line for a consistent equipment bay appearance.

Key Features

• 10 to 40 kVA Compatibility: The G35TBXR6B6 is rated across the full Galaxy 3500 mid-range power band. Whether your UPS frame is configured at 10 kVA or scaled to 40 kVA, this enclosure integrates without requiring a different SKU — useful when sites phase capacity upgrades over time and you want a single battery extension solution that remains valid across growth stages.
• 208/400V Input: Dual input voltage support (208V for North American distribution, 400V for international 3-phase) means this enclosure applies to both domestic data centers and global deployments running IEC-standard distribution. Verify your local UPS frame's voltage configuration before commissioning — the enclosure matches the input spec of the paired UPS, not the facility bus independently.
• Integrated MCCB: The molded case circuit breaker built into this enclosure handles overcurrent protection at the battery cabinet itself. This removes the requirement to run a separate breaker feed from your main panel to the battery extension — a meaningful labor and material savings during installation, and it keeps the protection scheme local to the battery string for faster fault isolation.
• Floor-Standing Enclosure (59.02 x 20.59 x 36.42 in.): At just under 5 feet tall and roughly 20 inches wide, this cabinet fits in standard equipment row footprints without requiring a raised-floor cut or overhead cable management modification. The depth of 36.42 inches is within the envelope of most raised-floor tile grids — measure your aisle clearance before placement, particularly in retrofits where row spacing is tight.
• Galaxy 3500 Series Integration: This enclosure is purpose-built for the Galaxy 3500 family. The cabling interfaces, battery management bus, and mechanical attachment points are matched to that platform. Attempting to use this enclosure with a different UPS series is not supported — runtime extension requires the correct battery bus communication to function accurately and safely.
• Gray Finish: The gray color family matches standard APC Galaxy 3500 UPS frames and ancillary cabinets, which matters in customer-facing equipment rooms (co-location, server rooms visible during audits) where visual consistency reflects operational discipline.

Integration and Compatibility

The G35TBXR6B6 is designed exclusively for the APC by Schneider Electric Galaxy 3500 series UPS platforms operating in the 10 to 40 kVA range. Integration requires matching the UPS frame's input voltage — 208V (North American 3-phase delta or wye) or 400V (international IEC distribution) — to this enclosure's rated input. Consult the Galaxy 3500 UPS installation guide for battery extension cabling specifications and the maximum number of extended run enclosures supported per UPS frame.

For facilities planning full power continuity infrastructure, this enclosure works alongside UPS and power supply systems as part of a layered power protection strategy. Integrators managing large-scale deployments should also review power distribution options to ensure upstream panel capacity supports the combined load of the UPS frame plus battery extension. Facility engineers unfamiliar with 3-phase battery extension design should consult APC's Galaxy 3500 configuration documentation for proper battery string sizing and runtime calculations — runtime depends on load percentage and the number of battery enclosures deployed, not just the enclosure's kVA rating.

For security and surveillance integrators, extended runtime UPS infrastructure like the G35TBXR6B6 is a foundational element of NVR and recording infrastructure continuity planning — ensuring recording systems stay online through grid interruptions. Pair with appropriate PoE switch UPS feeds to extend protection down to the edge camera layer.

Frequently Asked Questions

Q: What UPS models is the G35TBXR6B6 compatible with?

A: The G35TBXR6B6 is designed for the APC Galaxy 3500 series UPS platforms in the 10 to 40 kVA range. It is not designed for use with other APC UPS families or third-party UPS systems.

Q: What input voltages does the G35TBXR6B6 support?

A: The enclosure supports 208V and 400V input, covering North American 3-phase and international IEC-standard 3-phase distribution environments.

Q: What is the kVA range supported by the G35TBXR6B6?

A: It is rated for Galaxy 3500 UPS frames configured from 10 kVA up to 40 kVA.

Q: Does the G35TBXR6B6 include overcurrent protection?

A: Yes. The enclosure integrates a Molded Case Circuit Breaker (MCCB), providing overcurrent protection at the battery cabinet level without requiring a separate external breaker for the battery extension circuit.

Q: What are the physical dimensions of the G35TBXR6B6?

A: The enclosure measures 59.02 inches high x 20.59 inches wide x 36.42 inches deep and is a floor-standing gray steel cabinet.

Q: How much additional runtime does the G35TBXR6B6 provide?

A: Runtime extension depends on the connected load (as a percentage of UPS capacity) and the total number of battery enclosures deployed. APC's Galaxy 3500 runtime sizing tool and configuration documentation should be used to calculate expected runtime for a specific load profile.

Jerry Tildsen

The G35TBXR6B6 is a battery extension cabinet, not a UPS — that distinction matters more than it sounds. When I spec extended run infrastructure for a Galaxy 3500 deployment, the first question is always load percentage: at 40 kVA frame capacity with a 50% load, you're adding meaningfully more runtime per enclosure than at 90% load. The 10 to 40 kVA compatibility range on this enclosure means it stays valid across a site's capacity lifecycle, which justifies the procurement even if the frame starts at a lower kVA today.

Technical Highlights:

• MCCB Integration: Having the breaker built into the enclosure rather than sourced and wired separately simplifies the electrical one-line drawing and removes a component from the installer's BOM — in a data center retrofit, that's a real schedule and cost factor.
• 208/400V Dual Voltage: This single SKU covers both North American and international 3-phase infrastructure. For organizations managing multi-site deployments across regions, standardizing on the G35TBXR6B6 avoids carrying two part numbers for battery extension cabinets.
• 59.02 x 20.59 x 36.42 in. Footprint: The 20.59-inch width fits cleanly in standard equipment row spacing. The 36.42-inch depth is within most raised-floor grid tolerances, but always verify against your specific floor tile spacing before finalizing floor plan layout.

Deployment Considerations:

• This enclosure requires a Galaxy 3500 UPS frame for battery bus communication — runtime calculation and battery management are handled by the UPS, not the enclosure independently. Commission the UPS frame first, then integrate the battery extension per APC's Galaxy 3500 installation sequence.
• The MCCB provides overcurrent protection for the battery string, but upstream panel capacity must still account for the combined inrush and steady-state draw of the UPS frame plus all attached battery enclosures. Confirm panel headroom with the facility electrician before installation.

The G35TBXR6B6 is the right call for data centers and critical facility electrical rooms running Galaxy 3500 frames where a grid outage lasting beyond standard battery runtime is a genuine operational risk — think co-location facilities with SLA-backed uptime commitments or industrial control environments where a cold restart costs more than the cabinet.