Permanent Surge Protector V-CHECK 4RP 4P

The Cirprotec V-CHECK 4RP, reference 77706640, is a permanent overvoltage protector (POP) designed for 3P+N three-phase electrical installations at 230/400 V. Its function is to detect abnormal and sustained voltage increases, usually associated with issues such as incorrect wiring or neutral breakage, and to act on the shunt trip or undervoltage release coil of a molded case circuit breaker (MCCB) to disconnect the installation.

This Cirprotec permanent overvoltage protector is especially suitable for industrial and commercial installations where electrical equipment and loads need to be protected against voltages maintained above permissible values. It features a four-pole 3P+N configuration, a nominal voltage of 230 V phase-to-neutral and 400 V phase-to-phase, and takes up only 4 DIN modules on the DIN rail.

Main features of the Cirprotec V-CHECK 4RP

• Protection against permanent overvoltages (POP).
• Manufacturer reference: 77706640.
• Model: V-CHECK 4RP.
• 4-pole three-phase configuration, 3P+N.
• Internal 3+1 configuration.
• Nominal voltage: 230/400 V AC.
• Nominal phase-to-phase voltage: 400 V AC.
• Nominal phase-to-neutral voltage: 230 V AC.
• Grid frequency: 50-60 Hz.
• Actuation on shunt trip or undervoltage release coil.
• Integrated test button to check POP protection operation.
• LED status indication.
• Compatible with TT and TN-S network configurations.
• L-N / N-PE protection modes.
• DIN rail mounting.
• Width equivalent to 4 DIN modules.
• IP20 protection rating.

Protection against permanent overvoltages

Permanent overvoltages are voltage increases that can last for an extended period and cause damage to electrical and electronic equipment. A common cause is loss or breakage of the neutral in a three-phase installation, which can produce abnormally high voltages in connected loads.

The V-CHECK 4RP monitors the mains voltage and, when the set operating values are reached, commands disconnection through the coil associated with the molded case circuit breaker. In this way, it helps prevent the installation from remaining energized under harmful overvoltage conditions.

Overvoltage operating times

Cirprotec's technical datasheet establishes the following operating and non-response limit values for different voltage levels, according to the values indicated for permanent overvoltage protection:

Voltage Maximum operating time Maximum non-response time 255 V No trip - 275 V 15 s 3 s 300 V 5 s 1 s 350 V 0.75 s 0.25 s 400 V 0.20 s 0.07 s

Technical specifications

Feature Value Brand Cirprotec Model V-CHECK 4RP Reference 77706640 Protection type Permanent overvoltages (POP) Number of poles 4 poles, 3P+N Internal configuration 3+1 Nominal voltage 230/400 V AC L-L voltage 400 V AC L-N voltage 230 V AC Frequency 50-60 Hz Actuation method Shunt trip or undervoltage release coil Test button Yes Indication type LED Network configuration TT, TN-S Protection modes L-N / N-PE Number of DIN modules 4 Protection rating IP20 Operating temperature -5 to 40 °C Operating humidity 5 to 95 % Rigid conductor cross-section 6 to 35 mm² Flexible conductor cross-section 6 to 25 mm² Dimensions 62 x 90 x 69 mm Net weight 0.205 kg EAN 8435297817772

Recommended applications

The Cirprotec V-CHECK 4RP is especially suitable for three-phase electrical panels in industrial and commercial installations with a risk of permanent overvoltages. The manufacturer specifies applications in buildings, industry, telecommunications, and water treatment plants.

Thanks to its DIN rail mounting and 4-module width, it can be integrated compactly into electrical panels. The test button makes it easy to check POP protection operation during commissioning and maintenance tasks.

Installation considerations

The V-CHECK 4RP operates in conjunction with the coil of a molded case circuit breaker, so before installation it is necessary to verify compatibility between both devices and carry out the assembly according to the diagram and instructions provided by Cirprotec. Its IP20 protection rating means it is intended for installation inside a properly protected electrical panel.

Important: this model is intended for protection against permanent overvoltages. When the installation also requires protection against transient overvoltages, it must be complemented with the appropriate surge protection device according to the characteristics and requirements of the installation.