Description
Product Overview
The ABB PHARPSCH100000 is an MPS III Power Supply Chassis used in ABB Bailey/Symphony Harmony industrial control power systems. Its primary role is to provide the physical mounting and power-distribution structure for the system’s power supply trays and related power-system components.
ABB documentation lists PHARPSCH100000 as an MPS III Power Supply Chassis and identifies it as an accessory within the modular power-system architecture.
The chassis is designed around a redundant power arrangement. It can accommodate two power supply trays, with associated cooling and power-distribution connections. This makes it useful when maintaining an existing Harmony/MPS III installation where the original chassis needs replacement rather than redesigning the complete power system.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | ABB |
| Model | PHARPSCH100000 |
| ABB Type Designation | MPS III |
| Product Type | Power Supply Chassis |
| System Family | ABB Bailey / Symphony Harmony |
| System | MPS III Modular Power System |
| Chassis Function | Power supply mounting and distribution |
| Power Supply Arrangement | Supports two redundant power supply trays |
| Related Components | Power supply trays, cooling fans, power entry panels |
| Product ID | PHARPSCH100000 |
| Alternate Part Number | 10000823 / P-HA-RPS-CH100000 may appear in marketplace listings |
| HS Code | 853710 |
ABB’s product documentation confirms the model and its MPS III designation.
Main Functions
The chassis provides the mechanical and electrical infrastructure required by the MPS III power system.
Key functions include:
- Mounting positions for power supply trays
- Support for redundant power-supply arrangements
- Power output terminal connections
- Cooling-fan installation
- Connection to the system power bus
- Provision for DC bus monitoring components
- Status-output connection
The chassis itself should not be confused with the individual PHARPS-series power supply modules. ABB lists separate power-supply models such as PHARPS03000000, PHARPS32000000, PHARPS32010000 and PHARPS32200000.
System Architecture
A typical MPS III arrangement can include:
AC/DC Power Entry → Power Supply Chassis → Power Supply Trays → DC Power Bus → Harmony Control System / Field I/O
The exact power-supply combination depends on the installed system configuration. Different MPS III power supplies provide different combinations of 5 VDC, ±15 VDC, 24 VDC, 48 VDC and 125 VDC outputs. Therefore, the chassis should be selected together with the actual power-supply and power-entry configuration.
Installation & Replacement
Before replacing the chassis, verify:
- The existing chassis part number and revision.
- The installed MPS III power-supply tray configuration.
- Power Entry Panel compatibility.
- Cooling-fan and monitoring connections.
- Terminal wiring and DC bus connections.
- Mechanical mounting dimensions.
- The revision shown on the physical nameplate.
Do not assume that a chassis with the same base model number has identical accessories or revision details. For an operating control system, follow the site’s approved shutdown, isolation and electrical safety procedures.
Maintenance
For a replacement or spare chassis, inspect the following before installation:
- Chassis frame and mounting points
- Power terminals and connectors
- Internal wiring
- Cooling-fan mounting area
- Ventilation openings
- Signs of corrosion or overheating
- Part number and revision label
- Mechanical damage from transportation
If the chassis has been stored for an extended period, inspect connectors and terminals carefully before putting the assembly back into service.
Compatibility Notes
PHARPSCH100000 belongs to the MPS III modular power-system family. ABB documentation lists it alongside MPS III power supplies, power-entry panels, cooling fans and filter assemblies.
It is not a universal replacement chassis for every ABB Bailey power system. Before ordering, compare the complete part number and existing system configuration.
Marketplace listings may also identify the chassis as 10000823 or P-HA-RPS-CH100000. These references can be useful for cross-checking the physical unit, but the nameplate on the actual chassis should be treated as the final identification reference.
Typical Applications
The PHARPSCH100000 may be encountered in legacy ABB Bailey/Symphony Harmony installations such as:
- Process control systems
- Power generation facilities
- Oil and gas plants
- Chemical processing
- Industrial manufacturing
- Legacy DCS control cabinets
- Harmony/INFI 90 power-system assemblies
It is particularly relevant for maintenance teams supporting installed MPS III equipment where the original power chassis is no longer readily available through normal new-equipment channels.
Ordering Information
When requesting a replacement, provide:
ABB PHARPSCH100000
Also provide the chassis revision, nameplate information and photographs when possible. This helps distinguish between visually similar marketplace listings and verify the exact configuration.
Recommended condition wording: Use the actual eBay condition shown for the physical unit. Do not describe it as New Surplus unless the unit has genuinely been verified as such.
Recommended eBay Title
ABB PHARPSCH100000 | MPS III Power Supply Chassis | Harmony DCS
