Siemens Plug in socket for RT relay, screw terminal Part number LZS:RT78725

Product Overview

Siemens LZS:RT78725 is a plug-in relay socket designed for use with compatible LZS series coupling relays and RT plug-in relay modules. The socket provides a secure mechanical and electrical interface for the relay and allows simple installation on standard DIN rails. It features screw terminal connections and a narrow housing footprint, making it suitable for control panels, industrial automation interfaces and signal conditioning applications.

Key Features

• Plug-in relay socket for LZS series coupling relays
• Standard socket base with screw terminal connections
• Narrow width for space-efficient mounting
• Snap-on DIN rail mounting for easy installation
• Screw terminals with secure wire retention
• Robust industrial design
• Suitable for signal interface and control applications

Technical Specifications

• Article Number: LZS:RT78725
• Product Family: LZS coupling relays with plug-in relays
• Device Type: Plug-in relay socket
• Socket Width: approx. 15.5 mm
• Height: approx. 78 mm
• Depth: approx. 42.3 mm
• Connection Type: Screw terminals
• Connectable Conductor Cross-Section (Solid): 1.0 … 2.5 mm²
• Connectable Conductor Cross-Section (Stranded with Sleeves): 1.0 … 1.5 mm²
• Terminal Tightening Torque: 0.5 … 0.7 N·m
• Mounting Type: Snap-on DIN rail mounting
• Operating Temperature Range: –40 °C to +70 °C
• Protection Rating: IP20 (installed in enclosure)
• Net Weight (approx.): ~0.038 kg
• Colour (Housing): Light grey

Compliance & Certifications

• Manufactured to Siemens industrial quality standards
• CE compliant for control system applications
• RoHS compliant

Applications

The Siemens LZS:RT78725 relay socket is used to mount and connect LZS coupling relays or compatible RT plug-in relays within control cabinets and industrial automation systems. It supports secure mechanical installation, easy relay replacement and reliable signal connection for control interfaces, signal conditioning circuits and distributed automation networks.