We ll discuss the devices that make up a hand off auto circuit and how. Hand off automatic controls are used to permit an operator to select between automatic or manual operation of a motor.
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Wiring a two wire magnetic motor starter hand off auto circuit duration.
Square d hand off auto switch wiring diagram. Hand off automatic controls recognize hand off automatic switches on a schematic diagram. This book contains examples of control circuits motor starting switches and wiring diagrams for ac manual starters drum switches starters contactors relays limit switches and lighting contactors. Shop hand off auto selector switch kit field installable nema 1 enclosures size 4 thru 7 by square d schneider electric 9999sc8 at graybar your trusted resource for magnetic starter accessories and other square d schneider electric products.
The circuit shown in figure 27 1 permits a motor to be operated by a float switch or to be run manually. In this lesson we ll examine a common industrial application of 2 wire control circuits known as a hand off auto circuit. Wiring diagram book a1 15 b1 b2 16 18 b3 a2 b1 b3 15 supply voltage 16 18 l m h 2 levels b2 l1 f u 1 460 v f u 2 l2 l3 gnd h1 h3 h2 h4 f u 3 x1a f u 4 f u 5 x2a r power on optional x1 x2115 v 230 v h1 h3 h2 h4 optional connection electrostatically shielded transformer f u 6 off on m l1 l2 1 2 stop ol m start 3 start start fiber optic.
Nema size 0 6 combination starters with a fusible or non fusible disconnect switches efficient long lasting led pilot lights and foam in place door seals. 2 elementary diagram marked ol if alarm contact is supplied wiring diagram elementary diagram form c hand off auto selector switch mounted in cover fig 5 5 3. How to properly install wiring for a 24v minn kota trolling motor with a circuit breaker.
Wiring diagram elementary diagram form f4t control circuit transformer and primary fuses type s ac magnetic starters class 3 phase additions and special features 3 pole. The switch is shown as a single pole. Nema fusible disconnect switch combination starters nema size 0 6 with fusible or non fusible disconnect switch.
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