Closed Loop Hall effect. DC, AC pulse currents' measurements of 300 ARMS nominal with galvanic isolation. Compact and ultra flat design. To be panel mounted in various ways. Aperture 25.5 x 25.5 mm for the primary conductor crossing. Excellent accuracy, good response time, Current output, -25°C to + 70°C. Dual supply +/- 12 to +/- 15 V.