Shinyang Elec. com

Limit Switch

Limit Switch
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Other Information

Rating and circuit configuration

Rating (Electrical Rating)

Rated voltage (V)		Non-inductive load (A)				Inductive load (A)
		resistance load		lamp load		inductive load		motor load
		Normally closed	Always open	Normally closed	Always open	Normally closed	Always open	Normally closed	Always open
AC	125	10		3	1.5	10		5	2.5
	250	6		2	One	10		3	1.5
	480	2		1.5	0.8	3		1.5	0.8
D.C.	8	10		6	3	6		6
	14	10		6	3	6		6
	30	6		4	3	5		4
	125	0.8		0.2	0.2	0.8		0.2
	250	0.4		0.1	0.1	0.4		0.1

Inrush currentNormally closed max. 20A / normally open max. 10A

Cautionary temperature for use-10℃ ~ +70℃ (but not frozen)

Humidity for useBelow 95%RH

The figures in the diagram represent steady-state currents.
Inductive loads have a power factor of 0.4 or more (alternating current) and a time constant of 7 ms or less (direct current).
The lamp load is assumed to have an inrush current of 10 times.
The motor load current is assumed to have an inrush current of 6 times.

Circuit configuration

Contact	Circuit configuration	appearance
2CKT-DB (2 circuit double-stage)

Actuator types and selection method

classification	Movement to Action (PT)	Movement after movement (OT)	Force required for movement (OF)	degree	vibration shock	My environment	explanation
Roller Lever Type (-RL)	small~large	big		★★ ~ ★★ ★★	★★★ _	★★ ★★	The stroke in the direction of rotation is large, ranging from 45° to 90°, and the lever can be adjusted to any angle of 360°, making it easy to use. There are also high-sensitivity types (high-precision PT small) and wide-angle types (OT large). It is widely used from positioning to work detection.
Variable Roller Lever Type (-AL)	small~large	big	middle	★★ ~ ★★ ★★	★★★ _	★★ ★★	Taking advantage of the characteristics of the roller lever type, it is a type that allows detection of the operating object in a wide range, and the length of the lever can be adjusted.
Variable Rod Lever Type (-R)	big	big	middle	★★	★★	★★ ★★	It is convenient when the range of movement is wide or the shape is uneven, and it operates most sensitively among the rotation-type limit switches. Rod length adjustment and bending processing are also easy.
Fork Lever Lock Type (-FL)	big	middle	middle	★★	★★★ _	★★ ★★	When operated to the 55° position, it rotates on its own and maintains the state after operation. It operates reciprocally by a single dog, and the type in which the roller positions are crossed can be operated by two dogs.
Roller Plunger Type (-RP)	cow	middle	big	★★★ _	★★★ _	★★★ _	In addition to the cam, dog, and cylinder, a wide range of operations are possible by installing an auxiliary actuator. It has high accuracy in position detection.
Spring Wire Type (-SW)	middle	big	cow	★	★	★	It can be operated in any 360° direction by eliminating the axis direction. The operating force is the lowest among limit switches, and it is effective in detecting cases where the direction or shape is uneven. Since the movement after operation is absorbed by the actuator, the movement value for the workpiece movement is also large.
Plunger type (-P)	cow	middle	big	★★★ _	★★★ _	★★★ _	It has high accuracy in position detection when operating by hydraulic pressure, air cylinder, etc. (Pay attention to the movement of the operating body so that no unbalanced load is applied to the plunger.)