Description
GE IC695PSD140LT – DC Power Supply for PACSystems RX3i, conformal-coated for harsh and low‑temperature environments
The GE IC695PSD140LT is a DC-input power supply module for PACSystems RX3i racks. The “LT” variant is conformal-coated and, in most cases, supports extended low-temperature operation, which is handy in outdoor cabinets, water/wastewater sites, and oil & gas skids where temperatures swing and airborne contaminants are a reality. From my experience, this model is the go-to when you’re standardizing on 24/48 VDC field power and want a high-capacity backplane supply without moving to AC.
Our Order Placement Process and Guarantees
- Warranty: 365 days
- Lead time: 1 week ex‑stock; no more than one month at the latest
- Payment: 50% advance payment; full payment before delivery
- Express options: FedEx, UPS, DHL
Key Features
- Wide-range DC input (24/48 VDC systems) – Typically supports industrial 24 VDC and 48 VDC applications, simplifying cabinet power design.
- Backplane power for RX3i – Feeds the RX3i rack rails (3.3 V and 5 V logic rails plus 24 V relay power) for CPUs and I/O, so you don’t need separate point supplies.
- LT conformal coating – Added moisture and contamination resistance for coastal plants, dusty mills, or chemical rooms; better reliability over time.
- Extended temperature – The LT version, in many cases, is specified for low-temperature service, a common requirement for outdoor enclosures.
- Protection built in – Overcurrent/overvoltage and thermal protection help safeguard the rack; front-panel status LEDs make troubleshooting quick.
- Simple drop-in – Installs in the RX3i power-supply position on the rack; wiring is straightforward for DC sources and battery-backed systems.
Practical scenarios: a remote pump station running on 24/48 VDC with solar charging, a compact OEM skid that must pass salt-mist tests, or a substation RTU cabinet where low-temperature start-up is non-negotiable. One thing I appreciate is the way it stabilizes the backplane rails under mixed I/O loading; you might notice fewer nuisance resets compared to third‑party supplies.
Technical Specifications
| Brand / Model | GE PACSystems RX3i / IC695PSD140LT |
| Module Type | DC Power Supply (LT conformal‑coated variant) |
| HS Code | 8538.90 (Parts for industrial control panels/PLC assemblies) |
| Power Requirements | Wide-range DC input, typically 18–60 VDC (suitable for 24 VDC and 48 VDC systems) |
| Backplane Power Rails | +3.3 V, +5 V logic rails and +24 V relay power (for RX3i rack distribution) |
| Operating Temperature | LT variant typically supports extended low-temperature operation (often down to −40 °C; up to +70 °C depending on enclosure derating) |
| Signal I/O Types | No field I/O; provides regulated power to RX3i backplane only |
| Communication Interfaces | None (status via front-panel LEDs) |
| Installation Method | Installs in the RX3i power-supply position on the baseplate; baseplate mounts to panel/enclosure |
| Coating / Environmental | Conformal-coated (LT) for improved resistance to moisture, dust, and corrosives |
Related or Supporting Products
- IC695PSD040 – DC input power supply with lower capacity; suitable for lighter I/O/CPU loads.
- IC695PSA140 – AC input alternative (for sites with 100–240 VAC mains instead of DC sources).
- IC695CHS012 / IC695CHS016 – 12‑slot and 16‑slot RX3i racks compatible with this PSU.
- IC695CPE330 / IC695CPU310 – RX3i controllers commonly paired with the IC695PSD140LT for high‑reliability systems.
- RX3i I/O modules – Digital and analog I/O families draw backplane power supplied by the PSD140LT.
A maintenance technician told us their remote lift stations stabilized after moving to the LT variant—the coating seemed to help where humidity and chlorine vapors had been nibbling away at standard boards.
Installation & Maintenance
- Cabinet & environment – Mount the RX3i rack on a rigid backplate inside a NEMA/IP-rated enclosure. Provide ventilation or a small panel fan; avoid direct sun and liquid ingress.
- Wiring – Use appropriately sized DC conductors for the input source; keep DC runs short and segregated from high-noise motor cables. Add upstream protection and a properly rated disconnect.
- Grounding – Bond enclosure ground to a clean earth; maintain shield continuity for noise immunity.
- Safety – De-energize before module insertion/removal. This PSU is not intended for hot-swap in normal applications.
- Maintenance – Periodically check terminal tightness, clean dust with dry air, and confirm LED status. Firmware isn’t applicable to the PSU, but keep the CPU and rack firmware current for accurate diagnostics.
- Thermal checks – In most cases, aiming for airflow across the rack improves life; verify enclosure temperature stays within the LT rating, especially near heaters or VFDs.
Quality & Certifications
- CE and UL/cUL for industrial control equipment (typical for RX3i power supplies)
- RoHS compliant design
- Manufacturer’s warranty: 365 days from delivery
If you’re replacing a failed supply or sizing for a new rack, share your I/O count and CPU type—I can sanity‑check the load profile and confirm the IC695PSD140LT is the right fit, or point you to the PSA/PSD 040 models where appropriate.
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