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The SELEC 900EFR-BL-U-CE Earth Fault Relay is a highly reliable protection device designed specifically for monitoring and safeguarding single-phase and three-phase electrical systems from earth fault currents. It supports programmable MCCB frame sizes of 160A, 250A, and 630A with trip settings adjustable between 10% and 80% of the selected frame rating, ensuring precise fault detection tailored to your system requirements. Featuring a clear 3-digit liquid crystal display with backlight, users can easily monitor earth fault current levels in real-time. The relay incorporates dual 1 C/O (SPDT) contacts enabling independent programming of trip and pre-alarm relays for enhanced system protection and fault signaling. Its response time is an impressive 100ms, with adjustable trip, recovery, and power-on delay timers for customizable protection schemes. The device is powered by a universal voltage input range of 85-270V AC/DC, compatible with diverse power environments. Additionally, its compact 35mm DIN rail mounting design facilitates seamless installation within control panels, while CE certification guarantees compliance with safety and quality standards. Ideal for industrial and commercial electrical distribution systems seeking sophisticated earth fault protection with flexible programming options.
Key Features
| Features | Description |
|---|---|
| Applicable Systems | Single-phase (1Ø) and three-phase (3Ø) electrical systems |
| Programmable Frame Sizes | 160A, 250A, 630A |
| Trip Setting Range | Adjustable from 10% to 80% of selected MCCB frame rating |
| Output Relays | 2 x 1 C/O (SPDT) with independent programmability for trip and pre-alarm |
| Display | 3-digit LCD with backlight for easy earth fault current monitoring |
| Response Time | 100 milliseconds |
| Adjustable Delay Timers | Trip delay: 0-99.9 sec, Recovery delay: 0-99.9 sec, Power ON delay: 0.5-99.9 sec |
| Supply Voltage | Universal 85-270V AC/DC |
| Mounting | 35 mm DIN rail mount for compact and secure installation |
| Certification | CE certified for compliance with European safety standards |
| Attributes | Description |
|---|---|
| Measuring Parameter | Earth Fault Current Monitoring |
| Electrical Connections | Compatible with 3Ø-4W, 1Ø-2W, and 3Ø-3W systems |
| Trip Relay Contact Rating | NC contacts: 3A @ 250V AC, NO contacts: 5A @ 250V AC |
| Accuracy - Current | ±5% of settings ± 2 digits |
| Accuracy - Time | ±5% of settings ± 100 ms |
| Response Time | 100 ms |
| Trip Time Delay Range | 0 to 99.9 seconds |
| Recovery Time Delay Range (Auto Reset) | 0 to 99.9 seconds |
| Power ON Delay Range | 0.5 to 99.9 seconds |
| Display Type | Liquid Crystal Display (LCD) with backlight |
| Mounting Type | DIN rail mount (35mm) |
| Supply Voltage Range | 85 to 270 V AC/DC |
| Relay Output Contacts | 2 x 1 C/O (SPDT) |
*Disclaimer: The above description has been AI-generated and has not been audited or verified for accuracy. It is recommended to verify product details independently before making any purchasing decisions.
Yes, this relay is designed for use with both single-phase (1Ø-2W) and three-phase systems (3Ø-3W and 3Ø-4W), offering versatile earth fault protection.
The relay supports programmable trip settings ranging from 10% to 80% of the selected MCCB frame size (160A, 250A, and 630A), allowing tailored protection levels to match system capacity.
It incorporates two independent single-pole double-throw (SPDT) relay contacts enabling separate programming for trip and pre-alarm signaling to enhance fault management.
Yes, the SELEC 900EFR includes both front panel and remote options for testing and resetting the relay, facilitating ease of maintenance and operation.
The device offers a fast response time of 100 milliseconds, ensuring quick detection and tripping in the event of an earth fault.
It operates on a wide universal voltage range from 85 to 270 V AC/DC, making it compatible with diverse power supply conditions.
Yes, the SELEC 900EFR-BL-U-CE is CE certified, confirming compliance with European safety and quality standards.
Brand: a s enterprises
Country Of Origin: India
Earth Fault relay
Product: SELEC 900EFR
Short circuit protection device for 1Ø & 3Ø system.
Programmable frame sizes : 160A, 250A & 630A
Trip Setting : 10 - 80% of Frame size
2 X 1 C / O (SPDT) Relay output.
Trip relay and Pre-alarm relay independently programmable.
Front / Remote Test and Reset Function
Supply Voltage: 85 - 270V AC/DC
DIN rail Mount
CE certified
Brief Specifications
Measuring Parameter Earth Fault Current Monitoring
Electrical Connection 3Ø-4W, 1Ø-2W, 3Ø-3W
Display 3 Digits Liquid Crystal Display with Backlight
Trip Setting 10% to 80% of Selectable MCCB Frame Rating
Time Ranges Response Time: 100ms,
Trip Time Delay: 0-99.9sec,
Recovery Time Delay: 0-99.9sec (In Auto Reset Mode),
Power ON Delay: 0.5-99.9sec
Accuracy Current : ±5% of the settings ±2digit,
Time : ±5% of the settings ± 100ms
Output Contact 2 X 1 C/O (SPDT)
Output Rating NC: 3A@250V AC, NO: 5A@250V AC
Supply Voltage 85 to 270V AC / DC
Size 35mm
Mounting Type DIN Rail Mount
Certification CE
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