Overview
The Synatel LSM.4-15S is a general-purpose time delay relay designed for applications requiring controlled timing and circuit sequencing. Operating at 115/240V with dual frequency support (50/60Hz), this relay delivers reliable performance in industrial control environments. Originally manufactured by Synatel Instrumentation, the LSM.4-15S is now available as a used/discontinued unit through industrial surplus channels, making it an economical choice for replacement or legacy system upgrades.
Key Features
- Dual voltage operation: 115V and 240V AC compatible
- Universal frequency support: 50Hz and 60Hz operation
- Solid-state construction for dependable timing control
- Compact form factor suitable for panel mounting
- Proven reliability in industrial timing applications
- Economical used/surplus alternative to new units
Technical Specifications
- Input Voltage: 115/240V AC
- Frequency: 50/60Hz
- Type: Time Delay Relay
- Manufacturer: Synatel Instrumentation
- Part Number: LSM.4-15S
- Status: Discontinued by manufacturer
- Application Class: General Purpose Control
Typical Applications
The Synatel LSM.4-15S is suited for:
- Motor starter sequencing and soft-start control
- Pump activation delays and shutdown sequences
- HVAC system timing and interlocking
- Industrial process control and automation
- Safety circuit timing and alarm delays
- Legacy system maintenance and replacement
Compatibility & Replacements
Compatible With
- General industrial control circuits rated 115/240V AC
- Panel-mounted relay socket applications
- Motor control centers and starter systems
- HVAC and mechanical systems requiring timed sequencing
- Legacy control panels requiring 50/60Hz dual-frequency operation
Replaces / Drop-In Replacement For
The LSM.4-15S was designed as a general industrial time delay relay. Verify compatibility with your system integrator before ordering, as the specific model number format suggests this was a custom or regional variant. Other similar Synatel time delay relay models in the LSM series may be functional alternatives.
Works With
- Standard industrial 115V and 240V AC control circuits
- Electromechanical relay sockets and mounting blocks
- Motor control systems and starters
- Both 50Hz and 60Hz power distribution systems
- DIN-rail and panel-mount enclosure assemblies
