| ■ Technical Data |
YX711FU400 |
■ Monitoring Type | 3P4W | ||||||
| ■ Output Characteristics | SPDT | ■ Working Voltage | 440VAC | ||||||
| ■ Frequency | 50/60Hz | ■ Over Voltage | - | ||||||
| ■ Under Voltage | 75% | ■ Protection Delay | 0.1S | ||||||
| ■ Hysteresis Voltage | - | ■ Recovery Delay | 5-15M | ||||||
| ■ Phase Sequence | √ | ■ Phase Failure | √ | ||||||
| ■ PTC Protection |
- | ■ Asymmetrical Voltage | - | ||||||
| ■ Response Time of Relay | 0.1S | ■ Contact Rating | 10A/240VAC | ||||||
| ■ Ambient Temperature | -10°C~+55°C | ■ Setting Tolerance | - | ||||||
| ■ Repeatability | - | ■ Temperature Error | ±2% MAX | ||||||
Three-Phase Four-Wire Undervoltage Protection Relay: Provides undervoltage protection, phase loss, and phase sequence protection with an adjustable long recovery delay ranging from 5 to 15 minutes.


Wenzhou Derrek Electric Co., Ltd. is an OEM/ODM YOSHINE Three-Phase Four-Wire Undervoltage Protection Relay Supplier and Wholesale YOSHINE Three-Phase Four-Wire Undervoltage 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.
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