Product Description
The 1109555 (REL-IR-BL/L 24DC/4X21) is a Phoenix Contact industrial plug-in relay designed for reliable signal switching and load control in automation, PLC systems, and industrial control panels. It provides stable performance for multiple switching circuits in a compact, socket-mountable design suitable for DIN rail installations.
Key Features
• Plug-in industrial relay with 4 changeover contacts (4PDT / 4X21)
• 24 V DC coil voltage for standard PLC and control system compatibility
• High switching capacity up to 6 A per contact (250 V AC/DC)
• Integrated LED status indicator for coil energization monitoring
• Mechanical position indicator for quick visual status check
• Built-in manual test push button for commissioning and troubleshooting
• Socket-mounted design for easy installation and quick replacement
• High mechanical durability with long service life (~30 million operations)
• AgNi contact material ensures stable switching and low contact wear
• Compact relay body suitable for dense control panel layouts
Specifications
• Product Type: Industrial Plug-in Relay
• Model: REL-IR-BL/L-24DC/4X21
• Part Number: 1109555
• Manufacturer: Phoenix Contact
• Coil Voltage: 24 V DC
• Contact Configuration: 4 changeover contacts (4PDT)
• Rated Switching Current: 6 A per contact
• Switching Voltage: up to 250 V AC/DC
• Contact Material: AgNi (Silver Nickel)
• Coil Power Consumption: approx. 0.7–0.8 W
• Coil Resistance: approx. 650 Ω (typical)
• Mounting Type: Plug-in (requires compatible relay socket/base)
• Operating Temperature Range: approx. -40 °C to +70 °C
• Electrical Life: application-dependent (load and switching conditions)
• Mechanical Life: up to ~30,000,000 switching cycles
• Indication: LED status + mechanical flag indicator
• Test Function: Manual push button for functional testing

