We present to your attention an updated range of PH-40tc series voltage relays for home and industrial use.

The voltage relay is designed to protect electrical equipment from unacceptable voltage fluctuations in the network and the consequences of a neutral (zero) break.

The voltage relay:

• disconnects the electrical circuit if the voltage goes beyond set limits
• displays the actual voltage value at the input contacts in the range of 100 V to 350 V and shows the presence of voltage at the output contacts
• stores information about the last five incidents in non-volatile memory.

The voltage relay has overheating protection and will disconnect the load if the temperature inside the device exceeds 85°C (due to exceeding the rated load current, poor contact from weak terminal screw tightening, etc.). The relay also monitors the temperature of each contact individually, and if the temperature exceeds 85°C, it will disconnect the load.

Advantages:

• overheating protection as an additional fire safety factor
• event log
• compact size (only 2 modules)
• self-extinguishing plastic
• power reserve of the built-in relay

Application area:

• household use: protection for the entire home or individual devices, such as refrigerators, air conditioners, heaters, computers, etc
• industrial use: as part of a control and switching panel; as a component of equipment such as an industrial refrigerator, machine tool, etc

Key features:

• overheating protection – provided by a built-in temperature sensor, disconnecting the relay in case of overheating of the device’s internal components
• terminal protection – ensured by temperature sensors on each terminal, disconnecting the relay in case of poor wire-to-terminal contact or the use of an undersized wire
• event log helps identify weak points in the electrical network
• easy and simple setup – setting only 3 parameters provides protection for your devices against major network faults

Wiring diagram:

Technical specifications:

Rated voltage: 230/240V
Mains frequency: 47-65 Hz
Voltage measurement accuracy: 2%
Automatic restart range: 5-900 s
Operating voltage range of the relay: 90-450 V
Response time for Umax: 1 s
Response time for Umin: 7 s
Response time for voltage increase exceeding 30 V from the Umax setting: 0.12 s
Response time for voltage increase over 430 V with a pulse duration over 1.5 ms: <0.05 s
Response time for voltage drop below 100 V: 0.25 s
Climatic version: UHL 3.1
Product protection rating: IP 10
Overvoltage category: II