871L-B20E40-T2

Photoswitch

200 offers available: $45.99–$1050.00
871L-B20E40-T2 PHOTOSWITCH Allen Bradley

The Allen-Bradley Photo Switch 871LB20E40T2 is a versatile and reliable opto-isolated switching device designed for use in various automation applications. This photo switch is an essential component in systems where electrical isolation between control and load circuits is necessary.

The device features an 871L series housing, which is known for its robust and compact design. The 871LB20E40T2 is specifically designed to accept an 8.5mm diameter square or round photoconductive cell. The photoconductive cell is not included in the package, and it should be selected based on the specific lighting conditions and the desired switching function.

This photo switch operates on an opto-isolated principle, which means that the control and load circuits are electrically isolated from each other. This feature ensures safe and reliable operation in applications where electrical isolation is crucial. It also provides galvanic isolation, which prevents the transfer of electrical noise and interference between the control and load circuits.

The 871LB20E40T2 has a switching capacity of 5 amps at 277 volts AC or 1 amp at 240 volts DC, making it suitable for use with a wide range of loads. It has a voltage range of 100 to 277 volts AC, 120 to 240 volts AC, or 12 to 24 volts DC, providing flexibility in various power supply configurations.

The device is easy to install and requires minimal wiring effort. It has a terminal configuration of four terminals, labeled as A, B, C, and D. Terminal A and C are used for the input power, while terminal B and D are used for the load. The photoconductive cell is connected to terminals 1 and 2.

The Allen-Bradley Photo Switch 871LB20E40T2 is built to last and is designed to meet the demanding requirements of industrial automation applications. It offers excellent reliability and long-term durability, ensuring consistent performance even in harsh environments.

In summary, the Allen-Bradley Photo Switch 871LB20E40T2 is an ideal opto-isolated switching solution for applications where electrical isolation is necessary. Its compact design, versatile terminal configuration, and wide range of voltage and current capabilities make it a reliable and flexible component for various automation systems.

The Allen Bradley PS871L-B20E-40T2 (Photoswitch) is a solid-state relay designed for use in various automation applications. Here are some pros and cons that might help in your decision-making process:

Pros:

1. Solid-state technology: This relay uses no moving parts, making it more reliable and longer-lasting compared to traditional electromechanical relays.

2. Compact design: With a small form factor, the Photoswitch can easily be integrated into space-constrained applications.

3. Wide operating temperature range: The Photoswitch can operate in temperatures ranging from -40 C to 85 C (-40 F to 185 F), making it suitable for a wide range of industrial environments.

4. High switching capacity: The Photoswitch can handle up to 20 amps at 277 volts, making it a versatile option for various industrial applications.

5. Fail-safe operation: The Photoswitch maintains its state even in the absence of the input signal, ensuring system stability in critical applications.

Cons:

1. Cost: The Photoswitch may be more expensive than traditional electromechanical relays, which could be a deciding factor for budget-conscious applications.

2. Limited input options: The Photoswitch is designed to be triggered by an optical input, which may not be suitable for all applications requiring a different type of input.

3. Sensitive to light: The Photoswitch is designed to be triggered by light, which could potentially lead to unwanted operation if the environment contains excessive light or fluctuating light levels.

In conclusion, the Allen Bradley PS871L-B20E-40T2 Photoswitch offers several advantages, including its solid-state technology, compact design, wide operating temperature range, high switching capacity, and fail-safe operation. However, it may be more expensive than traditional relays and may not be suitable for applications requiring a different type of input. Ultimately, the decision to purchase the Photoswitch depends on the specific requirements of your application and your budget. If the advantages outweigh the disadvantages for your application, the Allen Bradley PS871L-B20E-40T2 Photoswitch could be a valuable investment for your industrial automation needs.

Details:

Sells new and surplus product develops channels to purchase such. Packaging and handling: items are safely eds packaged in custom shipping cartons for protection. Allen bradley 871L-B20E40-T2 / 871lb20e40t2 used proximity sensor, 2-wire ac/dc, 40mm head size, 20mm sensing distance, shielded, n.o. Delectable output, 1/2 not conduit.

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