Test and measurement systems demand reliable power integration. System integrators face tight rack space. Procurement teams need compliant, easy‑to‑build enclosures. A poorly chosen chassis can delay projects and increase cost.
The 3U chassis is a critical platform. It must support PSU mounting and cooling. It must also fit standard 19‑inch racks. Missing these features leads to rework and unpredictable integration timelines.
The TPS 3U Chassis (Art. BJ9900003) solves these issues. It provides an ATX power supply mounting area. It aligns with IEC 60297 and EIA‑310‑D standards. Its 132.5 mm height (3U) and 670.5 mm depth fit full‑length cards and EATX motherboards. The design simplifies test rack assembly.
Chassis Architecture, Material Construction, and 3U Specification
The TPS 3U Chassis (BJ9900003) is a 19‑inch rack mount enclosure. Its dimensions are 482.6 mm wide by 670.5 mm deep. The panel stands 132.5 mm high. This matches exactly three rack units.
This height allows a full ATX PSU next to a standard motherboard. No internal conflicts occur. The chassis uses multiple materials for strength and weight. Sheet steel forms the frame. Aluminum panels reduce the overall mass. Galvanized plate resists corrosion inside.
The standard finish is powder‑coated RAL 7035 (light gray). Front and side panels get this treatment. The rear plate comes in powder‑coated or nickel‑coated options. A colorless‑oxidized front handle provides a clean grip. These materials handle heavy cards and drives without bending.
Mounting dimensions follow the 19‑inch standard. Horizontal hole spacing (W2) is 465 mm. Vertical spacing (H2) is 57.2 mm. This aligns to the 3U pattern. The chassis slides into compliant racks without adapters. For other heights, TPS offers 1U, 2U, 4U, and 6U models.
Built‑In PSU Mounting and Redundant Power Options
Power supply integration often causes project delays. Custom brackets are frequently needed. The TPS 3U chassis eliminates that step. It has dedicated ATX PSU mounting points near the rear.
The layout supports ATX, MicroATX, and EATX boards. A standard ATX supply fits directly. Procurement can choose wattage from 400 W to over 1 000 W. Redundant 1+1 PSU configurations also work. The internal depth leaves room for cables. Airflow stays open and predictable.
PSU swaps happen without removing other rack gear. That speeds maintenance tasks. The tool‑less design helps further. Power cables route through side channels. They are kept away from data cables. This reduces EMI in measurement systems.
See the complete TPS 19‑inch chassis category for power integration options.
PDU Compatibility and Rack Power Management
Multiple chassis in a rack share power. A rack PDU distributes that power. The 3U chassis must fit alongside these units. Its 482.6 mm width ensures compatibility. Horizontal and vertical PDUs both work.
Rear panel cutouts provide cord exit space. C13 and C19 cables connect easily. They do not block adjacent equipment. Vertical 0U PDUs mount in rear channels. This setup delivers clean power to each chassis. Power budgeting becomes simpler. A single PDU serves the whole stack.
Visit the full chassis family to plan multi‑chassis power architecture.
Cooling Design and Thermal Strategy
Heat reduces measurement accuracy. Hotspots cause drift and early failures. The TPS 3U chassis addresses this with high airflow design. Air moves front‑to‑rear without obstruction.
The 132.5 mm height allows 80 mm or 120 mm fans. Fans can mount inside or in the PSU. Cool air enters via the front panel. It flows over the motherboard and cards. Warm air exhausts through the rear. Aluminum panels also shed heat passively.
A typical spec is a 10–15 °C rise above ambient. This chassis supports that with proper fan choice. Ask for detailed airflow data during RFQ. Cooling depends on the specific configuration.
IEC 60297‑3‑100 and EIA‑310‑D Compliance
IEC 60297‑3‑100 – International Mechanical Standard
This standard defines the 482.6 mm (19 in) series dimensions. For a 3U chassis, panel height is 132.5 mm. Horizontal hole spacing (W2) is 465 mm. Vertical spacing (H2) is 57.2 mm. These three numbers ensure interchangeability. Any compliant chassis fits any standard rack.
EIA‑310‑D – North American Standard
EIA‑310‑D defines the 1U = 1.75-inch unit. The hole pattern alternates at 0.625‑0.625‑0.5 inches. Horizontal rail spacing is 18.312 inches (465.1 mm). This matches typical U.S. data center racks.
The TPS 3U chassis meets both standards. It carries CE and RoHS marks. Documentation is available on the product page. For UK projects, UKCA marking exists on related models. Refer to IEC 62368-1 and CISPR 32 for safety and EMC context.
Application Scenarios for Test, Control, and Data Center
Test and Measurement Rack
The 3U size is standard for PXI and PXIe platforms. The chassis holds PXI controllers and modular instruments. A built‑in ATX PSU powers the backplane cleanly. Multiple 3U units stack in automated test racks. One PDU serves them all.
Industrial Control and DAQ
In factories, the chassis acts as a control enclosure. It houses industrial boards and DAQ cards. The steel‑aluminum build handles vibration. RAL 7035 coating resists coolants. Front‑accessible handles simplify maintenance tasks.
Edge and Data Center Node
The 3U height fits server‑grade boards. Hot‑swap bays come in 8 or 12 bay options. Redundant PSUs ensure uptime. A nickel‑coated rear plate improves shielding.
RFQ Checklist for Integrators and Procurement
- SKU: TPS 3U Chassis BJ9900003
- Motherboard form factor (ATX, MicroATX, EATX)
- PSU type and wattage (standard or 1+1 redundant)
- Expansion card count and type
- Drive bay configuration (8 or 12 bay)
- Surface color (RAL 7035 or custom)
- Rear plate finish (powder‑coated or nickel)
- Certifications needed (CE, RoHS, UKCA)
- CAD/STEP model format
- Rack layout (single or multi‑chassis)
Frequently Asked Questions
Does the chassis include a power supply?
No, the chassis is a structural enclosure. You select and install the PSU separately.
Is it compliant with IEC 60297 and EIA‑310‑D?
Yes. Dimensions (482.6 mm wide, 132.5 mm high) conform to both standards. Mounting hole spacing matches W2 465 mm and H2 57.2 mm.
What motherboard sizes fit?
ATX, MicroATX, and EATX boards fit inside. The depth is 670.5 mm.
Can redundant PSUs be mounted?
Yes, the chassis supports 1+1 redundant ATX configurations.
What certifications are standard?
CE and RoHS come standard. UKCA is available on related models.
Where can I compare all U‑height options?
Visit the 19‑inch chassis category for 1U through 6U.
