Phoenix Contact MCR-2SP/UI-DC Threshold Switch

Description

The MCR-2SP/UI-DC from Phoenix Contact is a high-precision threshold switch, also known as a limit value switch, designed for monitoring analog standard signals. This module, with article number 2769873, features two independent setpoints that control two floating change-over relay contacts. It's an ideal solution for level monitoring, process control, and creating alarm triggers within an automated system. Its versatility in accepting both voltage and current inputs makes it a flexible component for various industrial applications. As an obsolete part, it is essential for maintaining and repairing existing installations.

Specifications

• Module Type: Threshold Switch
• Input Signal: 0-10V / 0-20mA
• Output Type: 2x Change-over relay contact (floating)
• Supply Voltage: 20-30VDC
• Contact Rating: 250V AC / 250V DC, 3A
• Time Delay: Adjustable 0-4s
• Operating Temperature: -20 deg C to +65 deg C
• Mounting: DIN Rail

Label Info

• Manufacturer: Phoenix Contact
• Type: MCR-2SP/UI-DC
• Article Number: 27 69 87 3
• Serial Number: 2002087807

Application

This threshold switch is commonly used in machine building, process engineering, and factory automation for tasks such as pump control based on tank levels, temperature monitoring with alarm outputs, and general signal comparison for go/no-go decisions in quality control.

Country of Origin

Germany

CO2 Impact

By purchasing this reused MCR-2SP/UI-DC, you are preventing the emission of approximately 8.0 kg of CO2. This is equivalent to the savings from not producing a new unit and provides a sustainable solution for your maintenance needs.

Availability

This is an obsolete item, available as a refurbished part. Limited stock available. Order now from PLC2Day for expert support and fast delivery.

FAQ

The MCR-2SP/UI-DC automatically detects the input signal type. For a voltage input, connect the signal to terminals 1 (+) and 3 (-). For a current input, connect the signal to terminals 2 (+) and 3 (-). The module has an internal shunt resistor for current measurement.

The DIP switches control the operating mode of the two relay outputs. You can configure them for various functions such as window comparator mode (active between two setpoints), over-level monitoring (active above a setpoint), or under-level monitoring (active below a setpoint), with or without memory (latching) functions. Refer to the product datasheet for the specific switch combinations.

Yes, the two change-over contacts (OUT1 and OUT2) are galvanically isolated from the input and from each other. This allows you to switch two completely independent circuits, which could have different voltages (e.g., one for a 24VDC PLC input and another for a 230VAC alarm light).

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Last Update: March 13, 2026