Description
The Oceaneering 0300563-1 (often referred to as 0300563) is a specialized Ground Fault Isolation PCB Card. This module is designed for use within Oceaneering’s subsea and offshore control systems, particularly in “Multi-Cassette” enclosure architectures. Its primary function is to monitor electrical circuits for insulation failures or ground faults and provide electrical isolation to prevent a single fault from cascading and affecting the entire control network. This is a critical safety component for maintaining the integrity of subsea instrumentation and control electronics.
Key Technical Specifications
| Parameter | Value/Description |
| Part Number | 0300563-1 |
| Revision | Typically Rev A or Rev B |
| Function | Ground Fault Isolation and Monitoring |
| Application | Subsea/Offshore Control Systems (Multi-Cassette Enclosures) |
| Origin | Made in U.S.A. |
| Serial Identification | Often marked “Serial GF&WA” |
| Mounting | Multi-cassette rack/chassis mount |
| Environment | Harsh marine/offshore conditions |
Recommended Related Models
These components are often serviced or found in the same subsea/marine control cabinets as the 0300563-1 module:
- 0300563 Rev B: Updated revision of the isolation card.
- Hydril AA5160003400: Subsea A/B Relay Control Module.
- Praxis Automation 20.2.610P: Interface/Logic PCB.
- RE Smith RS485-IRSFC24H: Communication/Interface PCB.
- Baylor D52620: Drill Assist Control Card.
- Honeywell EC7850: Burner/Process Control Module.
Important Implementation Note: As this is a ground fault isolation module, it is deeply integrated into the safety and monitoring logic of the subsea control system. When replacing this card, ensure the Ground Fault thresholds are calibrated to match the specifications of your specific control pod or enclosure. Improperly configured isolation boards can cause “Ghost Fault” alarms or, worse, fail to protect the system during a genuine short-circuit event.
