Premium General-Purpose Relay Solutions for Industrial Control Systems

Shihlin Electric's RSM, RSL, and RST relay series deliver flexible signal switching, isolation, and control capabilities with multiple contact forms, socket options, and coil voltage configurations designed for control panels, switchboards, and factory automation applications.

Relay - Shihlin Electric Relay RS Series
  • Relay - Shihlin Electric Relay RS Series

Relay

RSM

Shihlin Electric Relay RS Series

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Shihlin Electric · Relay

RELAY | RSM / RSL / RST Series

A general-purpose relay series for control panels, switchboards, and equipment control circuits, offering multiple contact configurations, AC/DC coil voltage options, and socket combinations for flexible wiring and easy maintenance.

Product Overview

This series is Shihlin Electric’s general-purpose intermediate relay lineup, covering the RSM, RSL, and RST series. With multiple contact forms and socket options, it is suitable for signal switching, isolation, and control applications in control panels, machinery, switchboards, and automation systems.

Panel Control Signal Isolation Interlock Control Maintenance Friendly

Features

  • Compact design for easy installation
  • High sensitivity
  • Well-structured design with wide application range
  • Optional test button for easy debugging and maintenance
  • Complete specification lineup with mechanical and LED indicators
  • Non-polar DC coil wiring option (depending on model) for easier field wiring

Series Lineup & Application Suggestions

RSM Series Compact relay / Multiple contact options
  • Typical model example: RSM4CD024L
  • Suitable for general control signal switching, equipment interlock, and panel control
  • Socket-compatible design for easier maintenance and replacement
Recommended for: control panels, equipment I/O isolation, and PLC interface relays.
RSL Series Multi-contact relay / Expanded contact applications
  • Typical model example: RSL4CA024L
  • Suitable for multi-circuit signal transfer and panel control circuit expansion
  • Available in multiple AC/DC coil voltage options
Recommended for: auxiliary control in switchboards, alarm and status signal distribution.
RST Series Socket type relay / Clear terminal layout and easy wiring
  • Typical model example: RST2CA024L
  • Suitable for control circuits and equipment terminal signal transfer
  • Supports socket and multiple terminal configurations for easy field service
Recommended for: control boxes, machine internal control, and frequent replacement scenarios.

Type Designation (Simplified)

Series
RSM / RSL / RST
Contact Form
e.g., 1C / 2C / 4C (depending on series)
Coil Voltage
AC: 24 / 48 / 110 / 230V; DC: 24 / 110V (depending on model availability)
Options / Suffix
L: LED indicator; LT: Mechanical + LED + test button (depending on model)
Actual available models may vary. Please refer to the latest catalog and quotation list for exact contact forms, socket types, and indicator configurations.

Typical Applications

  • Intermediate control and signal amplification inside control panels / switchboards
  • PLC digital output isolation and signal transfer
  • Status interlock and alarm output switching in motor control circuits
  • Multi-point signal distribution in automation equipment
  • Panels requiring frequent maintenance and quick relay replacement (socket type)

Coil Resistance Reference (Ω)

Series / Model DC AC
24V 110V 24V 48V 110V 230V
RSM2C / RSM4C 640 13,000 180 640 4,430 16,500
RSL2C 640 13,000 180 640 4,430 16,500
RSL4C 360 6,800 80 320 1,680 8,000
RST1C / RST2C 1,100 22,800 240 1,085 6,300 23,000
Certification
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Shihlin All Product Catalog

Download Shihlin All Product Catalog for more details.

How can you reduce control panel assembly time while ensuring reliable signal isolation and easy maintenance access?

Shihlin Electric's RSM/RSL/RST relay series with socket-compatible designs and optional LED indicators enables rapid panel assembly and simplified field replacement. The multiple contact form options (1C, 2C, 4C) and flexible AC/DC coil voltage selections allow you to standardize on fewer relay types while maintaining design flexibility. Contact our technical team to explore how our socket relay solutions can streamline your control panel manufacturing processes and reduce total cost of ownership.

The RSM, RSL, and RST relay series are specifically optimized for PLC digital output isolation, status interlock switching in motor control circuits, multi-point signal distribution in automation equipment, and frequent maintenance scenarios requiring quick relay replacement. Shihlin Electric's 60+ years of OEM/ODM manufacturing expertise ensures superior product quality combining Japanese assembly techniques with high-stability components, delivering stable and reliable performance across diverse industrial sectors. Whether you require compact relay solutions for equipment I/O isolation, auxiliary control in switchboards, or socket-type relays for control boxes and machine internal circuits, our comprehensive relay lineup with complete specification options and professional technical support provides the flexibility and reliability your automation systems demand.