Schneider Electric 140CPS12420 Redundant AC Power Supply Module
A Modicon Quantum redundant power supply for 115/230 VAC source service in a properly engineered rack-power arrangement.
Overview
Schneider Electric 140CPS12420 is a Modicon Quantum redundant power supply module for 115/230 VAC input service.
The module supplies the Quantum backplane and can share load with other compatible supplies. Redundancy is achieved only when the remaining supply capacity can carry the complete rack demand after one unit is removed or fails.
Rack loading, source voltage, supply count and slot allocation must therefore be calculated from the installed module population rather than copied from another Quantum cabinet.
Specifications
Features
Shared rack power
Compatible supplies divide the backplane load when installed in the approved Quantum rack arrangement.
Non-interfering service concept
A correctly designed redundant system permits a supply to be removed without disturbing the remaining source.
Wide AC input selection
The published input windows cover nominal 115 VAC and 230 VAC installations.
Migration visibility
Schneider Electric names a redundant X80 supply as the successor, but rack and platform conversion still requires engineering review.
Applications
Redundant Quantum rack supply
Supporting a Quantum rack where loss of one supply must not exceed the capacity of the remaining units.
High-availability process control
Maintaining backplane power in a cabinet whose power architecture is documented and periodically tested.
Power-platform modernization
Recording present rack load and AC distribution before conversion to an X80 supply architecture.
Lifecycle
Calculate the rack demand
List every module and determine the full backplane load before selecting the number of 140CPS12420 supplies.
Control the source arrangement
Record nominal voltage, branch protection, wiring, grounding, rack slots and the redundancy criterion.
Prove remaining capacity
With the approved procedure, confirm healthy load sharing and stable rack operation after the designated supply is removed from service.
About IndustryParts
https://www.industryparts.com/Application evidence stays with 140CPS12420
IndustryParts keeps the requested model, quantity, label evidence and delivery record together so the proposed supply can be reviewed against the real installed application before dispatch.
FAQ
What information should accompany a 140CPS12420 enquiry?
Provide the rack model, complete module list, calculated backplane load, AC source voltage, supply count, slot positions and clear label photographs.
Does installing two 140CPS12420 modules always create redundancy?
No. The remaining unit or units must be able to carry the complete rack load after one supply is unavailable.
What distinguishes 140CPS12420 from a nonredundant Quantum supply?
The model is intended for the redundant load-sharing arrangement; selection still depends on rack demand and the approved Quantum configuration.
Can BMXCPS4002 be inserted directly in place of 140CPS12420?
No. It belongs to the X80 platform. Schneider Electric lists it as migration guidance, not as a same-rack drop-in exchange.
What should be verified after servicing 140CPS12420?
Check input voltage, status indication, shared load, rack stability and the documented response when one supply is removed under the authorized test method.
