Schneider Electric 50440 VigiPacT MA120 Closed Toroid – 120 mm Inner Diameter, 250 A, Type A, 1/1000 Ratio

Descripción del Producto

The Schneider Electric 50440 is a Type A closed toroid from the VigiPacT range, designed as a residual current sensor for earth leakage protection and insulation fault monitoring. It features a 120 mm inner diameter and a 250 A rated operational current, with a transformer ratio of 1/1000 for precise residual current measurement. The toroid is compatible with VigiPacT RH-series residual current relays and Vigilohm insulation fault locators, enabling continuous monitoring of the power supply and the relay/toroid link. With an 85 kA/0.5 s short-time withstand current, 1000 V rated insulation voltage, and overvoltage category IV, it delivers reliable performance in demanding industrial and commercial power distribution systems.

Características estándar

• Type A Residual Current Sensing: Detects AC and pulsating DC residual currents, meeting the requirements of modern earth leakage protection for equipment with electronic loads.
• 120 mm Inner Diameter: Accommodates cable outer diameters up to 60 mm and maximum conductor cross-sections up to 240 mm², simplifying installation around large cables and busbars.
• 250 A Rated Operational Current: Supports continuous monitoring of circuits up to 250 A, suitable for feeder and branch protection in industrial and commercial distribution boards.
• 1/1000 Transformer Ratio: Provides precise and consistent residual current measurement for accurate coordination with VigiPacT protection relays.
• 85 kA/0.5 s Short-Time Withstand: Withstands high fault currents without damage, ensuring reliability in demanding power distribution environments.
• Reinforced Insulation (Overvoltage Category IV): Offers enhanced dielectric strength and safety for use at the origin of installations and in harsh electrical environments.
• Versatile Mounting Options: Supports fixed mounting on cables, plain or slotted backplates, profiled sheet metal, and clip-on DIN rail mounting for flexible panel integration.

Especificaciones técnicas

Parámetro	Valor
Fabricante	Schneider Electric
Modelo	50440
Serie	VigiPacT
Nombre corto del dispositivo	MA120
Tipo de producto	Earth Leakage Current Sensor (Closed Toroid)
Current Sensor Type	Type A closed toroid
Corriente nominal de funcionamiento (Ie)	250 A
Transformer Ratio	1/1000
Inner Diameter	120 mm
Rated Short-Time Withstand Current (Icw)	85 kA for 0.5 s
Tensión de aislamiento nominal (Ui)	1000 V
Tensión nominal soportada al impulso (Uimp)	12 kV
Categoría de sobretensión	IV
Frecuencia de la red	45…440 Hz
Dimensiones (alto × ancho × profundidad)	164 mm × 190 mm × 44 mm
Peso neto	0.59 kg
Temperatura ambiente de funcionamiento	-35…+70 °C
Normas	IEC 60947-2