2010年11月25日 · NEMA electrical motor starters refer to a standardized rating system for the electrical performance of the most common style of American-built motor starters. NEMA starters are rated by size: 00, 0, 1, 2, 3, 4, 5, 6 and 7 .
Size 8 starters are shipped with a 350 VA control circuit transformer and an interposing relay with a 120V coil. Voltage is then rectified to DC for the contactor coil. Bulletin 500 Line contactors and starters are designed to provide high performance in various applications.
NEMA (National Electrical Manufacturers Association) contactors and motor starters are rated by sizes. These sizes are grouped by rated current and power. [1] [2]
European or U. S. style starters can be replaced without changing wiring layout. The NEMA Sizes 6-8 features a special DC feeder group for coil feeding. This system allows AC or DC applied voltage, low noise and low inrush and holding consumption. The NEMA Size 9 coil is 110V dc/120V ac (Rectified). AC or DC magnet coils.
For 3 phase electric motors, use this table to calculate full load current (amps), breaker size, NEMA size starter, heater amps, AWG wire size and conduit size, given the motor horsepower (hp) and volts(v).
NEMA SIZE MOTOR STARTERS Maximum Horsepower Three Phase Motors Full Voltage Starting Auto Transformer Starting Part Winding Starting Wye Delta Starting NEMA SIZE 200V 230V 460V 575V 200V 230V 460V 575V 200V 230V 460V 575V 200V 230V 460V 575V 00 1 ½ 1 ½ 2 -- -- -- -- -- -- -- -- --
Motor Starter Sizing Chart - For Single and Three Phase Motors: Motor Starters CONTACT US FOR HELP WITH YOUR MOTOR STARTER NEEDS. MAXIMUM HORSEPOWER ... Auto Transformer Starting: Part Winding Starting: WYE - Delta Starting: NEMA SIZE: 200V: 230V: 460V 575V: 200V: 230V: 460V 575V: 200V: 230V: 460V 575V: 200V: 230V: 460V 575V: 00: …
NEMA Manual Starters for the Construction Market B100 Series Starters – Overview † For single-phase and three-phase motors with ratings up to 600V AC and 230V DC † Toggle switch operator and START/STOP pushbutton operator † Three-pole bimetallic overload relay † Starters available with red pilot light
Starter sizes range from 00 to 8 including Siemens exclusive motor-matched half-sizes which saves you money and space. Half-Size starters feature all the rugged performance characteristics of our NEMA rated starter sizes, but are fractionally sized to …