Limit Switch- 111:1 Series 55 Gear Ratio With 2 Contact Blocks Hubbell 55-4E-2SP-WR-111

Product Information

Specification

Also Known As :

A limit switch is a type of electromechanical device that operates when its actuator reaches a preset position, thereby either opening or closing an electrical connection. It's used in various applications to detect the presence or position of an object.

About :

Limit the travel of electrically operated doors, conveyors, hoists, machine tool work tables and similar devices. Equipment having rotating mechanisms, or linear motion which can be translated into rotational motion, can be controlled by these versatile switches. Furnas Series 55 switches can be mounted in any position and are easy to wire and adjust.

Common Applications: :

• Used in electrical circuits to control the operation of machinery.
• Can be found in various configurations to suit different applications, including emergency stops, limit switches, and more.
• This is a significant mechanical advantage. For every 111 rotations of the input (usually called the "pinion"), the output (often referred to as the "gear") rotates once. This kind of high ratio means that the input side will have to turn many times to achieve a single rotation or movement on the output side.

Standards:

• Contact blocks are typically associated with switches, especially in industrial applications. They are the components of a switch that make (or break) an electrical connection when the switch is actuated. In the context of a gear mechanism, it could mean that as the gear system reaches certain positions, the contact blocks are actuated, sending electrical signals to another system or device.
• The contact blocks are triggered at specified positions or conditions to send electrical signals, initiating actions like stopping the machine, changing direction, or other control functions.
• Ensure that the gear system and contact blocks are made of durable materials, especially for heavy-duty or industrial applications.

Construction :

• Consists of springs, levers, and other components that transfer the motion of the actuator to the contacts.
• Made of materials that offer durability and reliability over many operating cycles
• Options to mount the limit switch in place, which could include flanges, brackets, or holes for screws/bolts.
• These are the points where the switch connects to the electrical circuit. They can be screw terminals, quick connect terminals, or cable glands.

Specification :

Features :

Industrial Machinery:
• To detect the presence or position of objects or parts.
Safety Interlocks:
• To ensure that dangerous machinery is powered down when access doors are opened.
Position Detection:
• In elevators, doors, gates, etc., to detect the open or closed position.
Installation:
• The switches should be installed according to the manufacturer's specifications and guidelines, considering the environmental and operational conditions.
Maintenance:
• Regular maintenance checks to ensure that the switch is operating effectively and safely. It may include cleaning, inspection, and testing.
Voltage and Current:
• Indicates the maximum voltage and current that the switch is rated for. Exceeding these ratings can cause failure or unsafe conditions.
Slow Speed:
• The output shaft turns at a much slower speed compared to the input shaft.
Increased Torque:
• There is an increase in torque at the output, making it suitable for applications requiring substantial force.