ODM 250A three phase electrical fire prevention current limiting protector Manufacturers, Factories

250A three phase electrical fire prevention current limiting protector. Real time monitoring of circuit current voltage and frequency. Ultra fast short circuit protection within 150 microseconds. Prevents arc faults and electrical fires effectively. Comprehensive protection includes overload over temperature over voltage and under voltage. RS485 communication port for remote monitoring and control. Suitable for industrial commercial power systems. Ensures electrical safety in high risk environments. Reliable wall mounted protection device. Advanced technology for fire prevention. Meets strict safety standards. Protects equipment and property.

Product Description

Key Features

In addition to core short-circuit current limiting protection, this device integrates multiple intelligent functions to form a comprehensive electrical safety monitoring system.

  • Overload Protection: Triggers current limiting when line current exceeds the rated value for a sustained period.
  • Overtemperature Protection: Monitors the unit's own temperature or cable temperature, activating protection when overheating occurs.
  • Multifunction Monitoring: Real-time detection and display of various electrical parameters including three-phase voltage, current, frequency, and residual current (leakage).
  • Smart Alarm: Features audible and visual alarms; uploads fault information to cloud platforms or backend systems via 4G, WIFI, or RS485 for remote monitoring.
  • Additional Protections: Some models include over/under voltage protection, phase loss protection, and arc fault detection.

Technical Parameters

Item Specification
Rated Current 200A/250A
Supply Voltage 220VAC (175~250V)
Display Chinese LCD Screen
Short Circuit Protection <150us
Overload Protection Range: 0~100%; Delay: 0~60s
Overvoltage Protection Range: 221~300V; Delay: 0~60s
Undervoltage Protection Range: 100~219V; Delay: 0~60s
Wire Temperature Monitoring Range: 0~85℃; Delay: 0~60s
Leakage Current Monitoring Range: 30~1000mA; Delay: 0~60s
Communication RS485, Wireless LORA, NB-IoT, 4G (Optional)
Operating Temperature -20~85℃
Ambient Humidity <95%RH
Product Dimensions 550(L)*288(W)*200(H) mm
Installation Bottom Screw Mounting

Product Display

160-amp-three-phase-molded-case-electrical-limiter
high-capacity-current-limiting-arc-fault-detection

Outline and Installation Dimension

250 type Outline and Installation Dimension

550(L)*288(W)*200(H) mm

Application Scenarios

Thanks to its superior short-circuit protection, this three-phase device is widely used in high-risk commercial and industrial environments where electrical safety is critical.

  • Commercial Buildings: Malls, wholesale markets, and warehouses.
  • Public Institutions: Schools, hospitals, hotels, and entertainment venues.
  • Special Facilities: Electric vehicle charging stations, historic buildings, and dormitories.

Frequently Asked Questions

How fast does the short-circuit current limiting protection respond?

The device features ultra-fast short-circuit protection with a response time of less than 150 microseconds (<150us), suppressing current surges before significant damage occurs.

What remote monitoring and communication methods are supported?

It supports standard RS485 communication, along with optional wireless options including LORA, NB-IoT, and 4G for easy integration into backend systems or cloud platforms.

What electrical safety parameters can this unit monitor in real time?

The system performs real-time detection and display of three-phase voltage, operating current, frequency, wire temperature, and residual leakage current.

What is the recommended mounting method for installation?

The device is engineered for secure bottom screw mounting, ensuring stable placement within electrical distribution cabinets or control enclosures.

Can delay times and trip thresholds be customized?

Yes, delay times ranging from 0 to 60 seconds are configurable across overload, overvoltage, undervoltage, wire temperature, and leakage current protection settings.

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