The Littelfuse heavy-duty master disconnect switch provides reliable battery isolation to protect service professionals and prevent battery drain from parasitic loads. Featuring a durable engineering thermoplastic housing with UL 94 V-0 flammability rating and an IP68 waterproof rating, this switch is ideal for harsh environments including construction equipment, heavy-duty trucks, boats, and snow removal vehicles. It fits a standard master disconnect mounting pattern for easy drop-in replacement. The switch includes a large red knob with a white pointer for simple manual operation, clear On/Off position markings, and 90-degree switch travel, making it effective as a manual emergency power cutoff switch.Disconnect Switch, Knob Actuator, Through-Hole Mounting, Engineering Thermoplastic, SPST Contact Form, 400 A Current Rating, IP68 IP Rating, 1 Poles, 2 Position, 3/4-16 Stem, 85 °C Temperature Rating, 36 V
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