
Single-phase electrical fireproof current-limiting protectors are primarily used for protecting against short-circuit and overload faults in the terminal lighting circuits of places with high fire hazards. They can reliably eliminate arc sparks from short-circuit or overload fault points, thus preventing short-circuit fires from occurring at the source. Particularly suitable for: various professional markets, large shopping malls, cultural heritage units, religious sites, and more.
Product Features
Short-circuit breaking capacity: 0.00015 seconds
Real-time current measurement
Fan design to prevent equipment overheating
Track installation, enhance work efficiency
Application fields cover various industries
Feature Description
Fault Protection Function: When the product malfunctions, it will emit a fault indicator and activate the self-protection feature.
Overload protection function: Cuts off the overload circuit after 3 seconds of continuous overload to prevent fires caused by overloading.
Short-circuit protection function: In the event of a short circuit in the protected distribution circuit, the circuit power is disconnected within 150 microseconds to prevent fires caused by the short circuit.
Real-time current measurement feature: Measures the magnitude of current in the protected distribution circuit in real time.
Communication Function: Supports connection to electrical fire monitoring equipment for remote monitoring.
Real-time temperature measurement function: Monitors the temperature of the cables within the protected distribution circuit in real-time. If the cable temperature exceeds the set threshold, an alarm message is sent to the supervisory computer, and the alarm status remains until reset.
Technical Specifications
| Technical Specifications | Indicator | |
| Rated Voltage | AC220V/50Hz | |
| Work schedule | On-site power supply, 24/7 operation | |
| Power Consumption | Self-consumption power ≤ 3W (no load) | |
| Port rate | 9600 (default) | |
| Communication Methods | RS485 | |
| Communication Protocol | MODBUS-RTU | |
| Work Environment | Workplace | Places with rainproof and dustproof conditions |
| Ambient Temperature | -25℃~+50℃ | |
| Relative Temperature | 10% to 95% (non-caking) | |
| Poster height | No more than 5000m | |
Dimensions and wiring diagram
Guide rail type: Length 155mm x Width 108mm x Depth 70mm































