  
Description: L-3 Communications/SPD Electrical Systems offers a complete line of Sentinel Network Protectors. These network protectors consist of air circuit breakers with relays and auxiliary devices and backup fuses.The Sentinel Network Protectors are available from 1875 amps to 5100 amps, comply with ANSI C57.12.44 and are interchangeable with existing network protectors.
Celebrating Over a Century of Innovation and
Introducing the Sentinel Line of Network Protectors.
Current
Rating |
Voltage Rating
60 Cycles |
Type
Enclosures |
Mounting |
Interrupting
Rating |
| 1875 Amps |
125/216
2127/480 |
Sub. or
Open |
Trans. or
Separate |
30,000 A |
2250 Amps
(and under) |
125/216
2127/480 |
Sub. or
Open |
Trans. or
Separate |
35,000 A |
3000 Amps
(and under) |
125/216
2127/480 |
Sub. or
Open |
Trans. or
Separate |
60,000 A |
4500 Amps
(and under) |
125/216
2127/480 |
Sub. or
Non. Sub. |
Trans. or
Separate |
60,000 A |
| 5100 Amps |
2127/480 |
Open(only) |
Separate |
60,000 A |
All ANSI Ratings Available
Features of the Sentinel Network Protector:
Complies with ANSI C57.12.44
- Meets or exceeds all ratings
Interchangeable with Existing Network Protectors
- Can replace all existing protectors manufactured by others
Compact Roll-out Design
- Can replace all existing Roll-outs manufactured by others
- Smaller, lighter than all existing Roll-outs by up to 300lbs.
Superior Maintainability
- Few mechanical parts
- Modular components
- Fuses mounted in top in enclosure
- Easily accessible CTs
- Descriptive test points
- RMS port interface easily accessible
- Solid block disconnects
Enclosures
- Transformer or separately mounted
- Submersible
- Non-Submersible
Microprocessor Overcurrent Sensing
Available Options
- Remote monitoring system
- Health monitoring
- Integral solid state overcurrent protection
- Custom designs to meet other transformer or customer requirements
Maintenance Advantages:
State-of-the-art Modular Design.
- Removable Breaker (Switch) Element From Roll-out
- 75% Weight Savings
- Removable Relays and RMS
- Roll-out Interchangeable with All Existing Protectors — Saves inventory
- Reduced Maintenance Times By 50%
Individualized Solutions
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