HP manual 5

AC Controls

Manual Motor Starter Switches

Dimension / Wiring Diagrams

			3.97 in.
			(100.8 mm)
		1.38 in.
		(35.05 mm)
Table 15.8	Explosion Proof				4.38 in.
					(111.25 mm)
NEMA 7 & 9 Enclosures
	Type of
Device	Operator	Type
Class SMF	Toggle	FR2, FR2H		6.38 in.
Fractional		FR1, FR1H		(162 mm)
HP Starter				5.75 in.
				(146 mm)
Class MMF		KR2, KR2H
Motor	Toggle
Starter		KR2, KR1H
Switch					9⁄32
					Padlock
		Center Line			Hole
		(Conduit)			0.75 in. -14
		0.31 in.	1.38 in.	0.72 in.	(19.05 mm)	1.19 in.
		(7.94 mm)			Pipe Tap	(30.23 mm)
		Mtg. Holes	(34.93 mm)	(18.29 mm)	(Bottom Only)

Application

Class 12 manual starting switches are designed to economically start and stop inherently protected single and polyphase motors as used in light machine tools, pumps, blowers, and vent-fans. They are also used as ON and OFF switches for resistive loads such as heating.

Wiring Diagrams

Features

This switch is compact, economical, and easily wired using pressure type screw connectors. A rugged over center toggle mechanism results in a long life with weld free operation. It is available for surface mounting in a NEMA 1 enclosure, for flush mounting on a standard depth switch box or in custom panels. A pilot light for 120, 208 / 240, or 480 volts may

be added at any time before or after installation.

Table 15.9

Class 12 Manual Starting Switches

	Maximum Horsepower
	115	230–	120V	Continuous
Type		575
	Volts	Volts	DC	Amp Rating
1-Phase	2	3	1	24
3-Phase	—	2	—	15

1-Phase 3-Phase

Dimension Drawings

15

AC Controls

NEMA 1 Open with Flush Plate

288	Siemens Electrical Products and Systems	CSI Section 16160
	Specification Guide