Schneider 140CPS12400 Power Supply

Description

Product Introduction & Engineering Value

Power-supply redundancy is one of those details that matters most when something fails. The 140CPS12400 provides a 5.1 VDC output rated at 8 A at 60°C and is specifically designated as a redundant Quantum power supply. Its nominal AC input is 115 or 230 V, with published operating ranges of 93–138 VAC and 170–276 VAC.

For a legacy Quantum installation, the exact catalog number matters. The 140CPS12400 is not simply interchangeable with every Quantum power supply. Its redundant architecture, output rating, rack arrangement, and incoming AC configuration should be checked before a replacement is installed.

Technical Specifications

These specifications are consistent with published Schneider-derived product data. The module also carries UL 508 and CSA C22.2 No. 142 references, with cUL and FM Class 1 Division 2 certification information listed in the available documentation.

Field Application & the “Trench” Experience

Picture an older Quantum control cabinet serving a continuous process. One power-supply channel begins showing abnormal behavior, but the process cannot tolerate a full shutdown. The maintenance team checks the incoming AC, verifies the rack configuration, and confirms that the installed module is a 140CPS12400 rather than assuming it is a standard Quantum supply.

That distinction is important. The module is specifically intended for redundant operation, so the technician needs to understand how the existing power supplies share the rack load before removing one.

Typical applications include:

1. Legacy Quantum redundant control racks where a second supply is used to maintain PLC availability during a supply fault.
2. Continuous process-control cabinets requiring controlled replacement of an aging AC power module.
3. Distributed plant control panels where spare 140CPS12400 units are maintained for emergency recovery.

140CPS12400

140CPS12400

Transparency SOP: QA & Testing

A sensible inspection process for New Surplus or refurbished 140CPS12400 inventory should cover the following:

• Part-number confirmation: Verify 140CPS12400 directly from the module label.
• Visual inspection: Check the housing, terminals, mounting points, labeling, and connectors.
• Component condition: Look for discoloration, corrosion, damaged capacitors, cracked insulation, or evidence of excessive heat.
• Input verification: Confirm the applicable 115/230 VAC test condition before energizing.
• Output verification: Confirm the expected 5.1 VDC output under an appropriate controlled load.
• Redundancy testing: Where the test setup permits, verify operation in the intended redundant configuration rather than testing only as an isolated power supply.
• Traceability: Record serial/identification information and clearly document whether the unit is New Surplus, Used, or Refurbished.

A clean enclosure is not a functional test. For legacy power supplies, that distinction is worth keeping explicit.

The Veteran’s Tech Trap Guide

⚠️ Trap #1 — Don’t confuse redundant and standard Quantum supplies.

The 140CPS12400 is specifically identified as a redundant power supply. Replacing it with another Quantum power supply simply because the mechanical format appears similar can change the power architecture of the rack.

⚠️ Trap #2 — Verify the actual AC configuration.

The supply supports nominal 115/230 VAC operation, but the documented input ranges are different. Confirm the cabinet wiring and measure the incoming voltage before energizing the replacement.

PRO TIP: Record the wiring arrangement of both redundant supplies before removing either one. In older cabinets, field modifications may not match the original drawings.

⚠️ Trap #3 — Don’t assume BMXCPS4002 is a physical drop-in replacement.

Schneider Electric identifies BMXCPS4002 as the replacement for the 140CPS12400. However, BMXCPS4002 belongs to the Modicon X80 platform and is specified for 100–240 VAC input. Treat this as a platform migration/replacement decision and verify the rack architecture before ordering multiple units.

Dynamic FAQ

Q: What is the Schneider 140CPS12400 used for?
A: It is a redundant AC power supply module for the Modicon Quantum automation platform.

Q: What are the input and output ratings?
A: The nominal input is 115/230 VAC, while the output is 5.1 VDC at 8 A at 60°C in the specified redundant configuration.

Q: Is the 140CPS12400 discontinued?
A: Yes. Schneider Electric lists the product as discontinued in multiple regional product databases. The exact discontinuation date varies by regional Schneider website, while Schneider identifies BMXCPS4002 as the recommended replacement.

Q: What is the recommended Schneider replacement?
A: Schneider Electric currently identifies BMXCPS4002, a Modicon X80 100–240 VAC power supply module, as the replacement. System compatibility should be checked before making the change.

Q: What should I verify when buying a New Surplus 140CPS12400?
A: Confirm the actual catalog number, physical condition, manufacturer labeling, serial/traceability information, and whether the seller has performed electrical testing. Do not equate “New Surplus” with factory-fresh current production.

Q: What warranty should apply to a surplus unit?
A: Warranty terms depend on the supplier. The quotation should state the warranty period, coverage, return procedure, and whether the unit was electrically tested before shipment.