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Description：

The PHOENIX CONTACT REL-IR-BL/L-24DC/4×21 is a plug-in industrial interface relay module designed for signal isolation, switching, and amplification in control systems. It belongs to the PLC-INTERFACE / REL series, widely used in panels to safely connect control signals with field devices.

Equipped with a 24 V DC coil and 4 changeover (4PDT) contacts, this relay allows flexible switching of multiple circuits simultaneously. Its design ensures electrical isolation between control and load circuits, protecting sensitive PLC or DCS outputs from voltage spikes and electrical noise.

Specification：

Frequently asked questions

Q1: What is the Phoenix Contact REL-IR-BL/L-24DC/4×21 1032527?

A1: It is an industrial interface relay used for signal switching and control applications in and electrical systems.

Q2: What type of contact switching does it use?

A2: It features 4 changeover contacts, allowing flexible switching configurations for multiple circuits.

Q3: What is the REL-IR-BL/L-24DC/4×21 1032527 maximum switching voltage?

A3: The REL-IR-BL/L-24DC/4×21 1032527 maximum switching voltage is 250 V AC/DC, suitable for a wide range of industrial applications.

Q4: What is the REL-IR-BL/L-24DC/4×21 1032527 minimum switching voltage?

A4: The minimum switching voltage is 12 V with a minimum current of 10 mA, ensuring reliable low-load operation.

Q5: What is the REL-IR-BL/L-24DC/4×21 1032527 maximum continuous current rating?

A5: The REL-IR-BL/L-24DC/4×21 1032527 relay supports a limiting continuous current of 6 A.

Product Applications

Control cabinets and control panels: As standard components within control cabinets, they are used for circuit switching and electrical isolation, protecting sensitive control systems from high load fluctuations in the field.

Power systems and substations: Suitable for the control and monitoring of auxiliary circuits, ensuring the safe operation of control and auxiliary circuits through electrical isolation. 

Machinery manufacturing: Integrated into machine tools, packaging machinery, or conveying systems for control and the switching operation of actuators such as motors and solenoid valves.