Ir: Oervload or thermal protection

Protection function where the adjustable Ir pick-up determines a protection curve similar to the thermal-protection curve (inverse-time curve I2t). The curve is generally determined on the basis of the Ir setting which corresponds to a theoretically infinite tripping time (asymptote) and of the point at 6 Ir at which the tripping time depends on the rating.

QR Code is a registered trademark of DENSO WAVE INCORPORATED in Japan and other countries.

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