12LS1

Ingress Protection:	IP67 - Dust Tight, Waterproof
Mechanical Life:	--
Electrical Life:	--
Operating Position:	1.330" (33.8mm)
Operating Temperature:	-29°C ~ 71°C
Overtravel:	0.250" (6.35mm)
Differential Travel:	0.045" (1.1mm)
Pretravel:	0.065" (1.65mm)
Release Force:	907gf
Operating Force:	3175gf
Features:	Steel Plunger
Series:	LS
Termination Style:	Screw Terminal
Mounting Type:	Chassis Mount
Actuator Type:	Round (Pin Plunger)
Voltage Rating - AC:	125V
Current Rating:	10A (AC)
Switch Function:	On-Mom
Circuit:	DPDT (DB/DM)
Part Status:	Active
Packaging:	Bulk

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Introduction

Snap action, limit switches are widely used components in various industrial applications for automatically activating or deactivating a system based on certain preset criteria. This article will focus on the 12LS1 snap action, limit switch, detailing the application field and working principle.

Application Field

The 12LS1 snap action limit switch is mainly used in switch control and overload protection devices, primarily in industrial automation, as well as other settings in which a reliable, fast and accurate switching of devices is needed.The 12LS1 is ideal for applications such as elevator hoist limit stops. Featuring a slim contact design and a break-before-make contact, the 12LS1 makes it easy to place it in tight, difficult-to-reach places making it a great choice when an unobtrusive switch is needed.The 12LS1 is also suitable for applications involving temperature and pressure measurement, power limit detection and motor overload control. In addition, it is ideal for simple ON-OFF switching, providing a reliable, quick and accurate singal switching each time.

Working Principle

The 12LS1 snap action limit switch works based on a bimetallic thermostat, in which the contact mechanism is operated by the thermal energy from a heat source. The bimetallic thermostat consists of two different metals; when the temperature of the heat source increases, one side of the thermostat expands more than the other, thus creating a bending force. This force turns a lever connected to the contact, which then activates the switch.Once activated, the switch will stay activated until the heat source cools off, at which point the two metals in the bimetallic thermostat will retain back to its original state, thus deactivating the switch. The 12LS1 is able to withstand temperatures up to 350℃, meaning that the switch will remain functional in high-temperature settings.

Conclusion

In conclusion, the 12LS1 snap action limit switch is commonly used in industrial automation and various other applications where reliable singal switching is required. Its slim contact design and break-before-make contacts also make it perfect for tight and difficult-to-reach places. Additionally, the 12LS1 is powered by a bimetallic thermostat and can withstand up to 350℃, making it an ideal choice for high-temperature environments.

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