| ■ Technical Data |
YX712BFA01 |
■ Monitoring Type | 3P3W/3P4W Universal | ||||||
| ■ Output Characteristics | DPDT | ■ Working Voltage | 220-459VAC | ||||||
| ■ Frequency | 50/60Hz | ■ Over Voltage | 15% | ||||||
| ■ Under Voltage | 15% | ■ Protection Delay | 3S | ||||||
| ■ Hysteresis Voltage | 5% | ■ Recovery Delay | 0.1S | ||||||
| ■ Phase Sequence | √ | ■ Phase Failure | √ | ||||||
| ■ Asymmetrical Voltage | 8% | ■ Response Time of Relay | 0.1S | ||||||
| ■ Contact Rating | 8A/250VAC | ■ Ambient Temperature | -10°C~+55°C | ||||||
| ■ Setting Tolerance | ±10% MAX | ■ Repeatability | ±2% MAX | ||||||
| ■ Temperature Error | ±2% MAX | ||||||||
Three-phase Three-wire and Four-wire Universal Protection Relay: Provides overvoltage, undervoltage, phase failure, phase error, and imbalance protection. It disconnects the load during voltage faults and reconnects when the line stabilizes. The product is designed for three-phase distribution systems and supports global voltage standards with detailed fault indicators for troubleshooting.


Wenzhou Derrek Electric Co., Ltd. is an OEM/ODM YOSHINE 220-459VAC Three-Phase Three-Wire/Three-Phase Four-Wire Voltage Protection Relay Supplier and Wholesale YOSHINE 220-459VAC Three-Phase Three-Wire/Three-Phase Four-Wire Voltage Protection Relay Company. YOSHINE’s products can be divided into two categories:
1. Products that manage electronic control processes (Step Relay, Time Relay, Switching Power Supply, Floatless Level Switch, etc.).
2. Products that protect equipment (e.g. motors) from voltage and current failures (Voltage Protection Relay, Current Monitoring Relay). OEM service is offered according to the client’s requirements.
YOSHINE has made its contribution to the development of our society and the global intelligence industry with the mission of “Made for Connection”.
The company currently has more than 50 employees, including 7 professional technicians and 2 engineers.
We have our own manufacturing plant which covers an area of 12000 square meters.
Our monthly production capacity is over 100,000 pcs, which can meet the needs of different clients.
Join YOSHINE at MATELEC 2025 for International Week of Elecrtrification and Decarbonisation YOSHINE ...
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