AC Controls
Manual Motor Starters and Contactors
General / Wiring Diagrams
Application
Across the line manual motor starters and contactors provide control for machinery where start stop remote con- trol is not required (optional remote stop available). Class 11 manual starters are used for single and polyphase motors up to 10 Hp. Starters have melting alloy overload relays which help protect against damage due to excessive current caused by a sustained overload, low line voltage, or single phasing of the motor.
Contactors provide control for inherently protected motors. Typical applications include metal and
Features
Class 11 manual controllers have front accessible pressure type wire connec- tors. Ample wiring space is provided for easy wiring.
A complete line of general purpose and industrial duty enclosures is available as well as open type mounting for custom built enclosures. These manual con- trollers are available with low voltage pro- tection which will automatically open the power poles when the voltage drops or the power is interrupted. A remote stop function may be incorporated with the low voltage protection coil as a factory option to provide remote or
Class 11 controllers provide the OSHA requirements for protecting personnel from potential injury caused by the auto- matic start up of machinery following a voltage drop or power interruption when low voltage protection is specified.
Open styles and devices in NEMA 1, 4, 7
&9, 12 enclosures can be padlocked in the OFF position.
Table 15.11
Class 11 Manual Motor Starters
| Maximum Horsepower |
| |
Type | Size | 115 Volts | 200/230 Volts |
| M0 | 1 | 2 |
M1 | 2 | 3 | |
| M1P | 3 | 5 |
Type | Size | 200/230 Volts | 460/575 Volts | |
M0 | 3 | 5 | ||
M1 | 71⁄2 | 10 | ||
|
15
AC Controls
290 | Siemens Electrical Products and Systems | CSI Section 16160 | |
Specification Guide | |||
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