10BS221

Ingress Protection:	--
Mechanical Life:	--
Electrical Life:	--
Operating Position:	0.640" (16.3mm)
Operating Temperature:	--
Overtravel:	0.010" (0.25mm)
Differential Travel:	0.007" (0.18mm)
Pretravel:	--
Release Force:	283gf
Operating Force:	907gf
Features:	--
Series:	BS
Termination Style:	Screw Terminal
Mounting Type:	Chassis Mount
Actuator Type:	Adjustable Plunger
Voltage Rating - AC:	125V
Current Rating:	20A (AC)
Switch Function:	On-Mom
Circuit:	SPDT
Part Status:	Active
Packaging:	Bulk

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The 10BS221 is a device of the snap action, limit switches type, and it can be found in a variety of industrial, technological and commercial applications. Snap action, limit switches are important components used in many different systems, as they are versatile devices able to detect the presence of a physical object or condition and in turn supply a signal to operate another part of the system.

The 10BS221, specifically, is a single pole, double throw (SPDT) switch, which means that it is designed to switch between two states, in this case with the two states being "on" (or the closed circuit) and "off" (or the open circuit). The switch is rated up to 10 Amp resistive current and 125/250 Volts AC. It also features two silver contact points in order to allow for excellent electrical contact when the device is in an "on" state.

The 10BS221 works on a snap action mechanism, which means that when a certain force threshold is exceeded, the switch will snap into either the "on" or "off" position automatically. Its integral "snap action" bias spring is designed to overcome any pre-tensioned closing or opening forces. This serves the purpose of preventing unintended and potentially dangerous misoperations.

The 10BS221 is a very reliable switching device, and it has a variety of applications such as safety applications where nuisance tripping is undesirable, on-off switching, as well as level and presence sensing. It is also used in a variety of industrial control applications, such as circuit breaker control, motor start and stop control, HVAC control, etc.

A 10BS221 device is typically mounted onto its corresponding matching plate in the system. First, the actuator is mounted onto the switch (also known as a rocker arm) via a screw located on the underside of the component. Then, the actuator is connected to the switch body, and the unit is then fed into the plate slot. The plate slots are typically designed to be compatible with the 10BS221, allowing for a secure and direct connection.

In operation, when the actuator is pressed into its position, the top and bottom silver contact points on the switch will be engaged, closing the circuit and sending a signal to the matching plate. When released, the actuator will move to open the circuit, and the signal will be turned off. This is the working principle behind the 10BS221 and the other snap action, limit switches, where a physical force is applied in order to activate the switch.

The 10BS221 and other snap action, limit switches of its type are used in many different applications due to their versatility and reliable switching. They are easy to install, operate, and maintain and they can provide a secure electrical system.

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