21-478P

BALL SWITCH TERMINAL, Pollak

2 offers available: $17.99–$46.20
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21-478P Comparison

21-478P in New – Open box Condition
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John Deere AM117780 Pollak P021-478P 21-478P Neutral Safety Start Switch Details$17.99Condition is New – Open box, John Deere AM117780 Pollak P021-478P 21-478P Neutral Safety Start Switch, FREE SHIPPING100.0%
21-478P in New Condition
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POLLAK Precision Ball Switch - NC - Sealed Screw Terminals - PN 21-478P (Blac... Details$46.20Top Pick! Condition is New, POLLAK Precision Ball Switch - NC - Sealed Screw Terminals - PN 21-478P (Blac..., FREE SHIPPING99.0%
21-478P POLLAK Precision Ball Switch Screw Terminals Blac

The Pollak 21-478P Precision Ball Switch is a versatile and reliable electrical component designed for various applications where a reliable and precise switch is required. This ball switch, featuring NC (Normally Closed) screw terminals and a black housing, offers a number of advantages over other switch types.

The switch mechanism is based on a precision ball bearing design. This means that the switch contacts are pressed against each other by a small ball, which ensures a reliable and consistent contact every time the switch is actuated. The ball bearing design also allows for a long switch life, as the contacts are subjected to minimal wear and tear.

The NC screw terminals on this ball switch make it easy to connect and disconnect wires. The screw terminals are large enough to accommodate wires up to 10 AWG (American Wire Gauge) in size, yet they are also tight enough to ensure a secure connection. The screw terminals are also color-coded, with the common terminal marked with a red cap and the normally open terminal marked with a black cap, making it easy to identify the correct terminal for each wire.

The black housing of this ball switch is not only aesthetically pleasing, but it also offers some practical advantages. The black color helps to blend the switch into its surroundings, making it less noticeable in many applications. The housing is also made of a durable and impact-resistant material, ensuring that the switch can withstand the rigors of daily use.

Overall, the Pollak 21-478P Precision Ball Switch with NC screw terminals and black housing is an excellent choice for anyone in need of a reliable and precise switch for their electrical project. Its precision ball bearing design ensures consistent and reliable contact, while the large and easy-to-use screw terminals make it easy to connect and disconnect wires. The black housing adds a touch of sophistication and durability to the switch, making it a great addition to any electrical system.

A Detailed Analysis of the Pollak 21-478P Precision Ball Switch with NC Screw Terminals in Black

The Pollak 21-478P Precision Ball Switch with NC Screw Terminals in Black is a popular choice for various applications due to its reliable performance and versatile features. In this analysis, we will discuss the pros and cons of this switch to help you make an informed decision.

Pros:

1. Precision Design: This ball switch offers a high level of precision, with a contact rating of 50 million cycles. This makes it suitable for applications where contact reliability is crucial.

2. Durable Construction: The switch's body is made of brass, which provides excellent electrical conductivity and resistance to corrosion. The ball is made of stainless steel, ensuring long-lasting performance.

3. Versatile: This switch comes with NC (Normally Closed) screw terminals, which are suitable for various applications. The screw terminals allow for easy wiring and installation.

4. Compact Size: The 21-478P switch has a compact size of 1.2 x 0.6 x 0.4 inches, making it an ideal choice for space-constrained applications.

5. Wide Operating Temperature: The switch can operate in temperatures ranging from -40 F to 221 F, making it suitable for use in a wide range of environments.

Cons:

1. Limited Current Capacity: This switch has a maximum current capacity of 1 Ampere, which may not be sufficient for high-current applications.

2. Requires Careful Installation: Due to its precision design, this switch requires careful installation to ensure proper contact and reliable performance.

3. Sensitive to Vibration: The ball switch may not perform optimally in environments with high levels of vibration.

4. Limited Operating Voltage: The switch has a maximum operating voltage of 250V AC or 30V DC, which may not be suitable for high-voltage applications.

Conclusion:

The Pollak 21-478P Precision Ball Switch with NC Screw Terminals in Black is an excellent choice for applications that require reliable contact performance, compact size, and versatile wiring options. Despite its limitations in terms of maximum current capacity, operating voltage, and sensitivity to vibration, its precision design, durable construction, and wide operating temperature range make it a popular choice for various industries.

Recommendation:

If you are looking for a reliable and precise ball switch for applications with moderate current requirements, the Pollak 21-478P switch is a solid choice. However, if you require a switch with higher current capacity, operating voltage, or resistance to vibration, you may want to consider other options available in the market.

Details:

Color: black. Item dimensions l x w h: 1 inches. Switch type: ball. Included components: item.

Manufacturer: Pollak. Contact type: normally closed. Connector type: screw terminals. Brand name: Pollak.

Contact material: copper. Circuit type: 1-way. Terminal: screw. Brand: Pollak.

Pollak precision ball switch - nc sealed screw terminals pn 21-478P black, 1 count: operation mode: manual. Material type: copper. Number of positions: mounting type: surface mount.

Control method: touch.

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rating: 99.0% out of 100 based on 370 user ratings.
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