50EP90-01-1-04N-F

Actuator Type:	Flatted (4mm Dia)
Operating Force:	5.761 ~ 17gfm
Panel Cutout Dimensions:	Circular - 7.11mm Dia
Depth Behind Panel:	13.64mm
Features:	--
Termination Style:	PC Pin
Mounting Type:	Panel Mount, Through Hole
Contact Finish:	Gold
Contact Material:	--
Angle of Throw:	90°
Actuator Length:	9.53mm
Series:	50
Voltage Rating - DC:	28V
Voltage Rating - AC:	115V
Current Rating:	150mA (AC), 200mA (DC)
Contact Timing:	Non-Shorting (BBM)
Circuit per Deck:	SP4T
Number of Poles per Deck:	1
Number of Decks:	1
Index Stops:	Fixed
Number of Positions:	4
Part Status:	Active

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Introduction

Rotary switches are multi-pole, multi-position switches that generate electrical signals in response to the user’s selection of one of the several positions. They are typically used in applications like AV equipment, lighting control, communications, and industrial automation. They have many advantages over regular toggle switches, such as providing more switching states, improved ergonomics, higher reliability, and an extended temperature range. The 50EP90-01-1-04N-F is a rotary switch from Eaton’s Crompton Electrical Products Division.

Application Field

The 50EP90-01-1-04N-F is used mainly in audio-visual (AV) equipment, such as TV and radio broadcasting systems, surveillance systems, and DVD players. It can also be used for switching between different inputs and outputs in automation, communications, and instrumentation applications. Its miniature design and low profile make it ideal for applications where reduced installation space is a priority.

Working Principle

The 50EP90-01-1-04N-F works by connecting multiple pole circuits in a circular pattern. The poles, numbered 1 to 6, are all connected to the rotating sector plate which is turned manually to change the switch selection. The contacts, marked A to J, are the movable contacts and they rotate along with the sector plate, closing the circuit at each contact point as the switch is rotated. The contacts are pre-loaded with a spring, so that the switch maintains the position rather than “bouncing” back. The contact resistance is low, making this switch highly reliable and capable of handling high currents.

Advantages

One of the key advantages of this switch is its compact size. It has a depth of only 10mm, and its slim design makes it suitable for installation even in small spaces. It is also sealed against dust and dirt, and it can be used in environments with a wide range of temperatures from -40°C to +85°C. The 50EP90-01-1-04N-F is also highly reliable, as it has a contact resistance of 5mω, and its low contact bounce ensures that the switch remains in the selected position even after frequent use.

Conclusion

The 50EP90-01-1-04N-F rotary switch from Eaton’s Crompton Electrical Products Division is a reliable, compact, and durable switch that is suitable for a wide range of audio-visual, automation, communications, and instrumentation applications. Its miniature size and low profile make it ideal for applications where space is limited, and its high contact resistance and low contact bounce ensure high reliability and long-term performance.

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