Universal trip amplifier – PR 4131

Main Functions:

• PR 4131 is a device used for monitoring, alarming or controlling. It has no analog signal output but it’s equipped with two settable relays to perform the tasks.

Input signal:

Supports multiple signal types including mA, V, RTD and TC.

Relay Control:

• The device has two output relays that can be configured to activate based on input signal limits or input signal fault settings, suitable for alarm or automatic control in the operating process.

Applications:

• Suitable for applications that require signal monitoring and/or relays to provide alarms or perform independent control functions based on input signal limits.

Universal trip amplifier – PR 4179B

Main Functions:

• PR 4179B is a measuring and monitoring device for AC voltage (0-300 VAC) and AC current (0-5A) with the ability to warn and protect the system through relay disconnection. It is specially designed for applications that require measuring, monitoring and protecting electrical systems – distribution cabinets, control panels and even monitoring and protecting electrical current for equipment.

Input signal

• Monitors AC voltage and current signals.

Relay control:

• Provides two configurable relays to trip or alarm when electrical signals exceed set thresholds.

Applications:

• Particularly useful in power systems where close monitoring and rapid tripping are required to protect equipment.

Comparison

Common points:

• Both devices have two built-in relays for control or alarm purposes.
• Both are capable of monitoring signal thresholds and taking specific actions when signals exceed these values.
• Voltage isolation up to 2.3 kVAC
• Additional PR 45xx units are required for reading values, monitoring parameters and configuring the device.

 

Differences:

• The PR 4131 focuses on monitoring a variety of input signals such as mA, V, RTD and TC. Meanwhile, the PR 4179B specializes in monitoring signals of AC power systems.
• The PR 4179B is optimized for circuit breaker protection in applications with incoming AC current and voltage, while the PR 4131 can be used in a wide range of industrial processes that require signal monitoring and alarm via relays.

Conclusion

• The PR 4131 is a good choice if you need to monitor a variety of signals (such as mA, V, RTD, TC) with a need relays for alarms or control.
• The PR 4179B is ideal for applications involving AC power systems that require monitoring, alarms or protection via circuit breaker functionality.

Both devices have specific industrial applications, and choosing the right device depends on the specific requirements of the system you are working on.