Apollo Discovery Marine Isolator (55000-721MAR)
The Apollo Discovery Marine Isolator (55000-721MAR) is placed at intervals on the loop and ensures that, in the case of a shortcircuit, only the section between the isolators will be affected.
Apollo Discovery Marine Isolator (Part No. 55000-721MAR)
The Apollo Discovery Marine Isolator (55000-721MAR) protects addressable fire detection loops from the effects of wiring short-circuits in marine environments. By isolating only the affected section of the loop when a fault occurs, it allows the remainder of the system to continue operating normally and maintain critical fire protection coverage.
In addition, the 55000-721MAR continuously monitors the loop using Apollo’s patented short-circuit detection technology. When it detects a short-circuit, the isolator immediately disconnects the affected section, thereby minimising disruption to the fire alarm system. Once engineers clear the fault, the isolator automatically restores both power and data communications to the previously isolated section, eliminating the need for manual intervention.
As a result, the 55000-721MAR enhances system resilience and reduces downtime. Furthermore, it helps maintain fire detection coverage across unaffected sections of the loop, making it particularly well suited to marine applications where continuous operation is essential.
Key Features
- Marine-approved loop isolator
- Detects wiring short-circuits using patented technology
- Minimises disruption caused by short-circuit faults
- Automatically isolates faulty loop sections
- Automatic restoration when the fault is cleared
- Supports up to 20 detectors or equivalent load between isolators
- Improves system integrity and fault tolerance
- Suitable for marine fire alarm systems
Typical Applications
The Apollo 55000-721MAR is suitable for:
- Marine vessels
- Offshore platforms
- Engine rooms
- Accommodation areas
- Control rooms
- Machinery spaces
- Commercial marine installations
- Marine addressable fire detection systems
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | Apollo Discovery Marine Isolator |
| Part Number | 55000-721MAR |
| Device Type | Loop Short-Circuit Isolator |
| Application | Marine Fire Detection Systems |
| Fault Detection | Wiring Short-Circuits |
| Fault Recovery | Automatic De-Isolation |
| Maximum Load Between Isolators | Up to 20 Detectors or Equivalent Load |
| Technology | Patented Short-Circuit Detection |
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