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

製品説明

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.

標準機能

• 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.

技術仕様

パラメータ	価値
メーカー	シュナイダーエレクトリック
モデル	50440
シリーズ	ビジパック
デバイスの略称	MA120
製品タイプ	Earth Leakage Current Sensor (Closed Toroid)
Current Sensor Type	Type A closed toroid
定格動作電流（Ie）	250A
Transformer Ratio	1/1000
Inner Diameter	120 mm
Rated Short-Time Withstand Current (Icw)	85 kA for 0.5 s
定格絶縁電圧（Ui）	1000V
定格インパルス耐電圧（Uimp）	12 kV
過電圧カテゴリ	IV
ネットワーク周波数	45…440 Hz
寸法（高さ×幅×奥行）	164 mm × 190 mm × 44 mm
正味重量	0.59 kg
周囲動作温度	-35…+70 °C
標準	IEC 60947-2