The Sinotimer SVP-718D is a digital protective relay for single-phase electrical installations, equipped with two relays for simultaneous disconnection of the phase and neutral. The device monitors voltage and current and cuts off the power supply when the values exceed the set limits.

It is designed to protect against overvoltage, undervoltage, and overcurrent, offering a digital display and the ability to adjust operating parameters.

• 2P disconnection – simultaneous interruption of phase and neutral.
• Two internal relays – dual-channel design.
• Overvoltage and undervoltage protection – disconnection when the specified limits are exceeded.
• Overcurrent protection – power cut-off when the set limit is exceeded.
• Digital display – voltage and current monitoring.
• Automatic reconnection – after parameters return to the set limits, according to the settings.
• DIN rail mounting – installation in electrical panels.
• Front buttons – for adjustment and control.

• Brand: Sinotimer
• Model: SVP-718D
• Type: Digital protective relay
• Rated current: 80A
• Rated voltage: AC 230V
• Number of poles: 2P
• Disconnection: Phase and neutral
• Overvoltage protection: Yes
• Undervoltage protection: Yes
• Overcurrent protection: Yes
• Overvoltage set limit: AC 230–300V
• Undervoltage set limit: AC 210–140V
• Reconnection time: Adjustable, 1–500s
• Mounting: DIN rail
• Color: Black

Connection
According to the supplied diagram, the power supply is connected to the upper N and L terminals, and the load to the lower N and L terminals. Both conductors are controlled by the internal relays.

Important
Simultaneous disconnection of phase and neutral does not mean differential protection. The device does not replace circuit breakers, residual current devices, or AFDDs required for the installation. Installation must be carried out by a qualified electrician.