Siemens Sirius Plug-in relay, 2 c/o, 24VDC, 12A Part number LZX:PT270024

Product Overview

The Siemens LZX:PT270024 is a plug-in signal / power relay from the SIRIUS family, featuring 2 change-over (CO / DPDT) contacts and a 24 V DC control coil. It is designed for flexible control and switching in industrial automation and control panels, and can be used with standard LZS-series sockets for plug-in mounting. Its compact dimensions and robust relay contacts make it suitable for switching control circuits or auxiliary loads.

Key Features

• Plug-in relay (series LZX) with 2 change-over contacts (DPDT / 2 CO)
• Control coil: 24 V DC, with nominal coil power ~741 mW
• Contact rating: up to 4 A at 250 V AC (AC-15) or 4 A at 24 V DC (DC-13)
• Thermal current rating: 12 A (for resistive load, if used accordingly)
• Compact dimensions: 28 mm height × 22.5 mm width × 35 mm depth
• High mechanical service life — ~30,000,000 mechanical operations
• Good electrical endurance — ~180,000 switching operations at rated AC-15 load
• Mounting: plug-in via compatible socket (e.g. LZS socket); base mounting possible with appropriate base
• Suitable for control circuits, signal switching, interlocking, auxiliary circuit switching in automation systems

Technical Specifications

• Article Number: LZX:PT270024
• Product Family: SIRIUS plug-in relays (LZX series)
• Contact Configuration: 2 × Change-over contacts (CO / DPDT)
• Control Coil Voltage: 24 V DC
• Coil Power Consumption: approx. 741 mW
• Thermal Current Rating (Ie): 12 A
• Switching Capacity (AC-15 / 250 V AC): 4 A
• Switching Capacity (DC-13 / 24 V DC): 4 A
• Contact Material: AgNi 90/10 (silver-nickel contacts)
• Mounting Type: Plug-in (socket-based) or base mounting
• Dimensions (H × W × D): 28 mm × 22.5 mm × 35 mm
• Mechanical Service Life: approx. 30,000,000 operations
• Electrical Endurance (AC-15 load): approx. 180,000 switching cycles
• Operating Ambient Temperature: –40 °C … +70 °C
• Weight (approx.): 0.029 kg

Compliance & Certifications

• Designed under Siemens SIRIUS relay standards for industrial control and automation
• Suitable for standard control circuits under IEC / EN relay and low-voltage control device regulations
• Relay contacts with AgNi material for durability and consistent switching performance
• Mechanical robustness and long service life make it suitable for frequent switching and industrial use

Applications

The LZX:PT270024 is ideal for switching and control tasks in industrial automation systems — such as PLC output switching, control circuit switching, interlocking circuits, signal switching, auxiliary load control, and interface relay tasks. It is well suited for use in control panels, motor control centers, distribution panels, machine-control enclosures, and other installations where compact plug-in relays with reliable contacts and 24 V DC activation are required.