531X302DCIAPG1 | GE 302 Series Mainframe Chassis

Description

Product Introduction

The 302 series is GE’s heavy-duty DC-powered chassis, and the PG1 takes it a step further with a high-inrush tolerant power supply—the 300W DC module is designed to handle the massive startup current spikes of multiple gate driver boards and large capacitive loads.

The model number is descriptive: “302” is the high-power DC chassis, “DCI” indicates DC input with isolation, “A” is the standard A-type filter, “P” indicates the high-inrush tolerant power module, and “G1″ is the revision with the 80mm fans and the enhanced power module. The high-inrush tolerant module includes a larger input capacitor bank and a soft-start circuit that limits inrush current to 25A (versus 40A on the standard module). The chassis includes the 300W DC power module (5V @ 20A, ±15V @ 5A, 24V @ 10A), the heavy-duty backplane, and the 80mm fans (45 CFM). The depth is 17.5”.

Key Technical Specifications

Compatible Replacement Models

✅ Drop-in Replacement:

• 531X302DCIAPG1 directly replaces 531X302DCIAPG0. The PG1 has the same high-inrush tolerant module, same backplane, same dimensions. The only difference is the fans—the PG1 has 80mm fans (same as the PG0). The PG1 revision improved the fan bearings. Swap your boards and power module over.
• 531X302DCIAAG5 (standard 302 chassis): The PG1 is the high-inrush version of the standard AAG5. If you have multiple gate driver boards or large capacitive loads, the PG1 is a direct replacement. The backplane and slot spacing are identical.

⚠️ Software Compatible (Requires Recompile):

• None. The power module is a dumb power supply—no communication, no configuration. No recompile needed.

❌ Hardware Incompatible:

• 531X302DCIAPG1 with a master chassis that doesn’t support expansion: The 302 can be a master or expansion chassis. If you’re using it as an expansion, the master must support the 302 interface.
• 531X302DCIAPG1 with a 212-series AC power supply: The 302 is DC input only.

Frequently Asked Questions (FAQ)

Q: What’s the advantage of the high-inrush tolerant module?

A: When you have multiple gate driver boards (or large capacitive loads), the startup current can be very high—up to 40A. The PG1’s module limits inrush to 25A with a soft-start circuit, which prevents nuisance tripping of upstream breakers. It also has a larger input capacitor bank (10,000µF) to handle the surge.

Q: Can I use the PG1 with a 24V DC input?

A: Yes. The DC power module accepts 24V, 48V, or 125V DC, jumper-selectable. At 24V input, the module draws up to 15A at full load—so ensure your DC bus can provide that current.

Q: The PG1 has 80mm fans. Is that enough for 300W?

A: Yes. The 300W power module is about 40W dissipation, and the fans (45 CFM) are sufficient. The PG1’s module is slightly more efficient (88%) than the standard 302, so it runs a bit cooler.

Q: Does the PG1 have a ground lug?

A: Yes. There’s an M6 ground stud on the rear panel. Connect it to your plant grounding bar.

Q: Can I use the PG1 with a 120V AC input?

A: No. The PG1 is DC input only.

Q: Does the PG1 come with the expansion cable?

A: No. The expansion cable (fiber-optic or backplane ribbon) is not included. The PG1 has the ports for the cable, but you need to supply the cable separately. We recommend using the GE-supplied cable.

Q: The PG1 is 30 lbs empty. Is that a problem for rack mounting?

A: The PG1 is heavy—use all four mounting screws on each rack ear. Ensure your rack rails are rated for the weight. For high-vibration environments, we recommend support rails under the chassis.

REXROTH DKC02.3-100-7-FW
SCHNEIDER 490NRP25400
BENTLY 3500/42M
GE IC754VSI12CTD-HH