700-CF400KF ALLEN-BRADLEY Relay

Review ALLEN-BRADLEY Industrial Relay

The Allen-Bradley Model 700-CF400KF is a versatile and reliable AC contactor and overload relay combination unit, designed to meet the demands of various industrial automation applications. This product is manufactured by Rockwell Automation, a leading provider of industrial automation and digital transformation solutions.

The 700-CF400KF is a 3-phase, 5-pole, 2-position AC contactor with a rated current of 400 amperes and a voltage range of 200 to 600 volts. It features a silver-alloy contact material that ensures superior contact life and reliability, even under heavy load conditions. The contactor operates with a coil voltage of 120 volts AC, 277 volts AC, or 24 volts DC, offering flexibility in power supply options.

The overload relay integrated into the 700-CF400KF is a time-delay, inverse-time-delay, or reverse-acting type, depending on the application requirements. It can handle the same current rating and voltage range as the contactor. The relay features a thermal element that detects the temperature rise in the circuit, and when the temperature exceeds a preset value, it trips the contactor to protect against overloads.

The Allen-Bradley 700-CF400KF comes with a clear, backlit indicator that shows the contactor's status. The relay has normally open, normally closed, and changeover contacts, providing various options for controlling connected loads. The unit is designed with a modular construction, making it easy to install, maintain, and upgrade.

The contactor and overload relay are mounted on the same frame, reducing the need for additional mounting space and simplifying wiring. The unit is also provided with mounting ears for easy mounting on DIN rails or other suitable mounting surfaces. The 700-CF400KF is suitable for use in harsh environments, thanks to its robust construction and IP20 rating for protection against dust and water splashes.

In conclusion, the Allen-Bradley Model 700-CF400KF is an essential component for industrial control systems, offering the combined benefits of a reliable AC contactor and an integrated overload relay. Its versatile features, such as various wiring configurations and power supply options, make it a valuable asset for a wide range of applications.

The Allen-Bradley CF400KF is a type of solid-state contactor or relay offered by Rockwell Automation. Solid-state contactors are electronic devices that function like traditional electromechanical relays but without moving parts, providing benefits such as faster response time, longer life, and improved reliability. Here are some pros and cons of buying a Allen-Bradley 700-CF400KF:

1. Faster response time: Solid-state contactors like the CF400KF have a much faster switching speed compared to electromechanical relays. This can lead to improved system performance and more precise control.

2. Longer life: Since solid-state contactors do not have moving parts, they generally have a longer lifespan than electromechanical relays. This can lead to reduced maintenance costs and downtime.

3. Improved reliability: With no moving parts, there are fewer opportunities for wear and tear, which can result in increased system uptime and reliability.

4. Reduced power consumption: Solid-state contactors consume less power than electromechanical relays, leading to energy savings over time.

5. Compact design: The CF400KF has a compact design, making it easier to install and integrate into control systems.

1. Higher initial cost: The Allen-Bradley 700-CF400KF is more expensive than traditional electromechanical relays. This can be a significant investment for smaller applications or budget-constrained projects.

2. Limited current handling capacity: The CF400KF has a lower current handling capacity compared to some electromechanical relays. This may limit its use in applications with high current requirements.

3. Compatibility issues: Some control systems may not be compatible with solid-state contactors, requiring additional components or modifications to work properly.

4. Limited voltage range: The CF400KF is designed for use in low-voltage applications (up to 600V). This may limit its use in high-voltage systems.

In conclusion, the Allen-Bradley 700-CF400KF solid-state contactor offers several advantages, including faster response time, longer life, improved reliability, reduced power consumption, and a compact design. However, it also has some disadvantages, such as a higher initial cost, limited current handling capacity, compatibility issues, and a limited voltage range.

If the application requires fast response times, high reliability, and energy savings, then the Allen-Bradley 700-CF400KF may be the best choice. However, if the application has high current requirements, is incompatible with solid-state contactors, or operates at high voltages, then an electromechanical relay may be a more suitable option. Ultimately, the decision between the two types of relays will depend on the specific requirements of the application and the available budget.

Details:

Allen Bradley 700-CF400KF industrial relay. Shipping services. 4-aa1g-11357.

specifications genpurrelays:

• brand: Allen-bradley
• mpn: 700-cf400kf
• type: Power Relay
• application: Industrial

general genpurrelays:

• category: Business & Industrial > Electrical Equipment Supplies > General Purpose Relays

offer genpurrelays:

• availability: in stock
• prices: $49.00–$65.00
• item condition:
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• sold #: 16
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• started: november 25, 2025
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