Schneider Electric Merlin Gerin 50438 Vigirex Closed Toroid - Differential Protection - 50mm

The Merlin Gerin 50438 Vigirex closed torus is an earth leakage current sensor used for differential protection. It is designed to monitor leakage currents in electrical systems and is part of the Vigirex/Vigilohm family. The device is suitable for AC and DC networks, with a transformation ratio of 1/1000 and a rated insulation voltage of 1000 V. It operates over a wide frequency range (45–440 Hz) and is rated for short-term currents up to 100 kA for 0.5 seconds, with a permissible residual short-circuit current of 85 kA for 0.5 seconds. It is a Type A closed wound toroid, and is compatible with Schneider’s Vigilohm and Vigirex equipment lines. The sensor is designed to function from −35 to +70 degrees Celsius and is rated IP20/IP30 for environmental protection. The description references a 50 mm diameter closed toroid and assigns the product to the Schneider brand family for global use.

Technical specifications

• Current transformer: Type A closed wound toroid
• Transformation ratio: 1/1000
• Rated insulation voltage: 1000 V
• Network type/frequency: AC/DC, 45–440 Hz
• Short-term admissible current: 100 kA / 0.5 s
• Residual short-circuit current: 85 kA / 0.5 s