Name: 342A4920 GE CPCI Power Supply 150W Hot-Swap 3U Module
SKU: 342A4920
Price: 214.00 USD
Availability: InStock

Product details

342A4920 GE Power Supply – CompactPCI Hot-Swap 3U Power Module

The 342A4920 is a General Electric CompactPCI power supply. It converts bulk rack power into ±12 V dc, 5 V dc, and 3.3 V dc rails. It feeds the backplane for controllers and cooling fans. The unit is CPCI Rev 2.11 hot-swap compliant. You can remove or install it without powering down the rack. One CPCI rack holds one or two units. Each unit plugs into the backplane through a standard Positronics 47-pin connector. Active current share and remote sense on +5 V and +3.3 V outputs support dual-supply operation. O-ring FETs isolate the outputs. The ±12 V rails use o-ring diodes for parallel use. This module suits industrial control racks, telecom shelves, and test systems that need reliable DC power.

Technical Data

Brand: General Electric (GE)
Model: 342A4920
Series: CPCI Power Supply Series
Module Type: CompactPCI 3U hot-swap power supply
Output Voltage: ±12 V dc, 5 V dc, 3.3 V dc
Output Power: 150 W
Input Voltage: 20–36 V dc
Connector: Positronics 47-pin, CPCI standard
Remote Sense: +5 V and +3.3 V dc outputs
Current Share: Active on +5 V and +3.3 V dc
Parallel Operation: O-ring FETs (+5 V, +3.3 V); o-ring diodes (±12 V)
Operating Temperature: 0 to +65 °C (+32 to +149 °F)
Storage Temperature: −40 to +85 °C (−40 to +185 °F)
Humidity: 5 to 95%, non-condensing
Operating Altitude: 0 to 10,000 ft (3,000 m)
Storage Altitude: 0 to 50,000 ft
Vibration: Random 10 Hz to 2 kHz, 3 axes (1 GRMS)
Over Temperature Protection: System shutdown, automatic reset
Over Voltage Protection: Latch style, 110% to 130% of nominal
Overload Protection: Full short-circuit protection, auto recovery
Dielectric Withstand: Input to output, min. 1500 V dc per EN60950
Insulation Resistance: Nominal 10 MΩ, input to output
ESD Susceptibility: EN61000-4-2 level 4, min. 8 kV
Radiated Susceptibility: EN61000-4-3 level 3, min. 10 V/m
EFT Burst: EN61000-4-4 level 3, min. ±2 kV
Input Surge: EN61000-4-5 level 3, line-line min. 1 kV, line-ground min. 2 kV
Conducted Disturbance: EN61000-4-6 level 2, max. 3 V
Derating: Rated at 65 °C and 10,000 ft altitude

Installation Guide

Removal
- Loosen the top and bottom screws. The bottom screw sits under the black ejection lever.
- Press the red tab inside the black lever to release it.
- Push the black lever down to unplug the unit from the backplane.
- Slide the unit out of the CPCI rack.
Installation
- Slide the new unit into the rack. Keep the front flush with other components.
- Push the black lever up. The red tab snaps up when the unit is fully seated.
- Tighten the top and bottom screws.

Commissioning and Maintenance Convenience

Hot Swap: Remove or replace the unit with the rack powered. No downtime needed.
Tool-Light Service: Two screws and one lever handle the whole swap.
Visual Feedback: The red tab confirms full insertion.
Auto Recovery: The unit restarts after overload or over-temperature clears.
Latch Protection: Over-voltage faults latch for safe diagnosis.

Compatibility Notes

Rack Type: Fits CPCI racks with one or two supply slots.
Backplane: Plugs into the CPCI 47-pin backplane connector.
Standard: CPCI Rev 2.11 hot-swap compliant, 3U form factor.
Dual Supply: Current share and o-ring devices allow two units in parallel.
Loads: Supports controllers and cooling fans in the rack.

Certifications

Safety: UL 1950, EN60950 (TUV)
EMC Immunity: EN61000-4-2, -4-3, -4-4, -4-5, -4-6
Dielectric: EN60950 input-to-output withstand

Packing List

1 × 342A4920 CPCI power supply
1 × Anti-static protective bag
1 × Shock-proof carton with foam

Warranty and Shipping

Warranty: 12 months
Dispatch: Ships within 12–24 hours
Couriers: FedEx, UPS, DHL
Inquiries: sales@powergearx.com or +86 18030005825 (WhatsApp)

Expert Review

The 342A4920 earns trust through simple design. Hot swap works without rack shutdown. Dual-supply current share adds real redundancy. The 150 W rating covers controller and fan loads. Derating at 65 °C and 10,000 ft is honest and clear. Latch-style over-voltage protection helps fault finding. The 47-pin Positronics connector keeps fitment standard. For legacy CPCI racks, this module is a practical drop-in choice.

Manager’s Insight

Buyers of legacy CPCI hardware care about uptime, not specs on paper. This unit removes downtime risk. You swap it live. You keep spare stock low, because one part covers both slots. The wide 20–36 V dc input fits many bulk power designs. Fast dispatch and a 12-month warranty lower your project risk. Order two units for redundancy and keep one on the shelf.

Best-Fit Equipment and Applications

CompactPCI controller racks in industrial automation
Telecom and network equipment shelves
Test and measurement systems
Legacy GE rack upgrades and spares
Dual-supply racks that need live replacement

FAQ

Can I replace this unit while the rack stays on?
- Yes. It meets CPCI Rev 2.11 hot-swap rules. Press the red tab, lower the lever, and pull.
Does one rack accept two units?
- Yes. The rack holds one or two supplies. Current share and o-ring devices support parallel use.
What input voltage does it need?
- It takes 20–36 V dc bulk power from the rack.
What happens on overload or short circuit?
- The unit protects itself and recovers when the fault clears.
How do I know the unit is fully seated?
- The red tab snaps up inside the black lever.
Experience-based question: why does my new unit run warm?
- Check airflow and altitude. The 150 W rating derates at 65 °C and 10,000 ft. Clear dust from the rack fans.
Experience-based question: can I mix old and new supplies in one rack?
- Match model and firmware level. Mixed units may share current poorly. Test the pair under load first.
Buying advice: how many units should I order?
- Order one per slot plus one spare. Live swap makes a spare cheap insurance.
Buying advice: what should I check before ordering?
- Confirm the 47-pin backplane, the 3U slot, and the 20–36 V dc input. Then verify the load budget under 150 W.