๐ฆ Product Overview
The HONEYWELL JS-PSRB01 is a Cherokee Power System Assembly designed for industrial control and automation power distribution. The assembly is associated with Honeywell/Yamatake-Honeywell Cherokee power-system hardware and includes a power-system backplane, power supply components, cage, and associated wiring/interface hardware.
The referenced assembly carries P/N 51109684-200 and is associated with the ACX643 power supply. Available specifications identify 115/240 VAC, 50/60 Hz input for the power-system configuration, while the ACX631 2A PSU within the assembly is specified at 550 W output.
This is a system-level power assembly rather than a simple standalone power-supply module. Before replacement, users should compare the complete assembly configuration, PSU revision, backplane number, and wiring arrangement with the existing Cherokee system.

๐ง Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Honeywell |
| Model | JS-PSRB01 |
| Product Name | Cherokee Power System Assembly |
| Part Number | 51109684-200 |
| Drawing No. | 80364419-004 |
| System | Cherokee Power System |
| Associated PSU | ACX631 2A / ACX643 |
| Input Voltage | 115/240 VAC; ACX643 reference: 100โ240 VAC |
| Input Frequency | 50/60 Hz |
| AC Input Rating | 10 A for the referenced ACX631 configuration; ACX643 reference lists 12 A |
| Power Output | 550 W |
| Output Rails | 24 V @ 20 A; 54 V @ 1 A; 6 V @ 35 mA |
| Power System Backplane | 51401166-100 Rev. J |
| Power System Cage | Included in assembly |
| Maximum Ambient Temperature | 55ยฐC |
| Temperature Rating | T4 |
| Assembly Origin | USA |
| Approx. Weight | 23.9 kg |
| Condition | Used / pre-owned, according to the referenced listing |
The 550 W and individual output-rail values above are published with the associated Cherokee PSU configuration. They should be checked against the actual nameplates and revisions on the supplied assembly before installation.
โ๏ธ Key Features
- Cherokee Power System assembly for industrial control applications
- Supports 115/240 VAC system input configuration
- 50/60 Hz AC input
- Integrated power-system backplane and cage
- Associated ACX631 / ACX643 power-supply hardware
- Multiple DC output rails for control-system loads
- 550 W power capability in the referenced configuration
- Designed for integration with existing Cherokee system hardware
- Heavy-duty assembly weighing approximately 23.9 kg
๐ญ Typical Applications
The JS-PSRB01 is suited to applications where a Cherokee power-system assembly is already installed and a matching replacement or spare is required.
Typical use cases include:
- Industrial automation control systems
- Process control equipment
- Legacy Honeywell control installations
- Power distribution for control electronics
- Industrial system maintenance and spare-parts inventory
- Replacement of an existing Cherokee power-system assembly
For an existing installation, matching the assembly number alone may not be sufficient. The internal PSU model, revision, backplane, and connector arrangement should also be checked.
๐ Identification References
Several identification numbers can appear on this assembly or its associated components:
- JS-PSRB01
- 51109684-200
- ACX643 Rev-C
- ACX631 2A
- 80364419-004
- 51401166-100 Rev. J
- 51401165 / 51401165-100
- 51109559-100
- 51109591-200
- 51401168-100
- 51401216-100
These references should be treated as component or assembly identification numbers rather than interchangeable part numbers.
โ Frequently Asked Questions
Q1: Is JS-PSRB01 the same thing as ACX643?
No. JS-PSRB01 identifies the Cherokee Power System Assembly, while ACX643 is an associated power-supply unit identified as P/N 51109684-200 in the available documentation/listings.
Q2: What is the input voltage?
The Cherokee assembly is listed with 115/240 VAC, 50/60 Hz. The associated ACX643 reference specifies 100โ240 VAC input. Always verify the actual nameplate and system wiring before energizing.
Q3: What is the output power?
The referenced configuration is rated at 550 W, with listed output rails of 24 V @ 20 A, 54 V @ 1 A, and 6 V @ 35 mA.
Q4: Is this a standalone power supply?
No. It is described as a Power System Assembly and includes associated backplane/cage hardware. It should be considered a system assembly rather than a generic AC/DC power supply.
Q5: What should I check before ordering a replacement?
Check the JS-PSRB01 model, 51109684-200 part number, ACX643/ACX631 identification, revision markings, backplane number, connectors, and the physical configuration of the existing Cherokee system.
๐ Related Honeywell / Cherokee References
The following references are associated with the same Cherokee power-system family or with components appearing in the JS-PSRB01 configuration:
- Honeywell JS-PSRB01 โ Cherokee Power System Assembly
- Honeywell 51109684-200 โ ACX643 Power Supply reference
- Honeywell ACX643 Rev-C โ Associated power supply
- Honeywell ACX631 2A โ Cherokee PSU configuration
- Honeywell 51401166-100 Rev-J โ Power System Backplane Assembly
- Honeywell 51401216-100 Rev-D โ Power-system related assembly reference
- Honeywell 51401165-100 Rev-C โ Power-system component reference
- Honeywell 51109559-100 โ Cherokee power-system reference
- Honeywell 51109591-200 โ Cherokee power-system reference
- Honeywell 51401168-100 โ Cherokee power-system component reference
These are related identification references, not confirmed direct substitutes for JS-PSRB01. Compatibility should be confirmed from the system configuration and revision level.
๐ Compatibility & Ordering Notes
For replacement planning, provide the complete model and part number shown on the assembly:
JS-PSRB01 / 51109684-200
If possible, also provide photographs of the nameplates and connector side. This is especially useful for older Cherokee assemblies because several PSU, backplane, and cage references can be present in the same assembly.
The referenced unit is listed as used, with an approximate shipping weight of 23.9 kg.
For maintenance inventory, this assembly is best treated as a system-specific spare rather than a general-purpose power supply.






