LSA6B-2D

Ingress Protection:	--
Mechanical Life:	--
Electrical Life:	--
Operating Position:	--
Operating Temperature:	-12°C ~ 121°C
Overtravel:	60°
Differential Travel:	7°
Pretravel:	15°
Release Force:	--
Operating Force:	46gfm
Features:	Steel Roller, Front Mounted
Series:	HDLS
Termination Style:	Plug In
Mounting Type:	Chassis Mount
Actuator Type:	Side Rotary, Adjustable Roller
Voltage Rating - DC:	115V
Voltage Rating - AC:	120V
Current Rating:	10A (AC), 800mA (DC)
Switch Function:	On-Mom
Circuit:	DPDT (DB/DM)
Part Status:	Active
Packaging:	Bulk

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Snap Action, Limit Switches and LSA6B-2D Application Field and Working Principle

Limit switches are used in a variety of industries for automated control and handling applications. They are designed for a range of switching functions, including snap-action, slow-speed, short-term and repeat cycling operations. The LSA6B-2D is a snap-action limit switch from ABB, featuring a hermetically sealed version specifically designed for safety-related applications. This article provides an overview of the application field, construction, working principle and other pertinent information.

Application Field

The LSA6B-2D is well-suited for many different kinds of applications, such as machine guarding, automotive and building automation, fire protection, and low-voltage switching. It is suitable for automation systems with a variety of different kinds of control and switching tasks. It is also used in the food and beverage industry, pharmaceutical production, and welding operations.

Construction

The LSA6B-2D is a hermetically sealed snap action limit switch constructed from a corrosion-resistant stainless steel enclosure. It has been designed to meet safety requirements and withstand extreme environmental conditions. The contacts are mounted in a housing made from Noryl, which provides additional protection against short-circuiting, overload and over-temperature. The switch is designed for slow-speed, short-term and repeat cycling operations.

Working Principle

The LSA6B-2D is a single-pole single-throw (SPST) switch with a silver contact for making and breaking electrical connections. The switch has two sets of contacts; an external set, which is used to make and break the contact, and an internal set, which is used to provide feedback that the switch has been operated.When the limit switch is switched on, the contacts are closed, allowing the current to flow through the external set. An electromagnetic force is then induced in the coil, which causes the contact to move against the force on the armature of the switch. When the switch is switched off, the contacts open and the coil is released, allowing the contact to return to its original position.The limit switch can be set to operate at either a slow-speed or snap-action rate. When operating at a slow-speed rate, the contacts take between 0.25 and 1 second to make and break the connection. When operating at a snap-action rate, the contacts can be opened and closed in less than 0.1 milliseconds.

Conclusion

The LSA6B-2D is a hermetically sealed snap-action limit switch, designed to meet stringent safety requirements. It is suitable for a range of switching functions, including slow-speed and snap-action operations. The switch has two sets of contacts and is constructed from corrosion-resistant stainless steel and Noryl. This makes the switch suitable for a range of automated control and handling applications.

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