Overview
The Syracuse Electronics TSR/D-00300 is a proven time delay relay engineered for industrial automation and machinery control. This used unit delivers a fixed 1-second delay on a 115VAC coil, making it a direct fit for legacy control systems and equipment upgrades. As a discontinued product, the TSR/D-00300 remains in high demand for maintenance and restoration applications where original form-fit-function is critical.
Key Features
- Fixed 1-second time delay period
- 115VAC coil voltage rated
- 8-pin plug-in base design for OCM compatibility
- SPDT (single pole, double throw) contact configuration
- Industrial-grade construction for harsh environments
- Drop-in replacement for discontinued installations
Technical Specifications
- Input Voltage: 115VAC, 50/60 Hz
- Time Delay: 1 second (fixed)
- Contact Configuration: SPDT
- Base Type: 8-pin plug-in
- Manufacturer: PS Syracuse Electronics (Crouzet)
- Part Number: TSR/D-00300 / TSRD00300
- Operating Ambient: 0 to 55°C (typical industrial range)
- Status: Discontinued by manufacturer
- Condition: Used, tested and functional
Typical Applications
- Legacy industrial automation systems requiring time-delayed output switching
- Machinery start/stop sequencing and dwell controls
- Equipment protection circuits with delayed response
- Motor starter circuits and soft-start conditioning
- Process control timing in chemical and manufacturing equipment
- Replacement units in vintage industrial control panels
Compatibility & Replacements
Compatible With
- 8-pin relay sockets and OCM (Octal relay module) bases
- Industrial control panels designed for 115VAC time delay relays
- Legacy automation systems from 1980s–2000s era
- Standard 115VAC three-wire control circuits
Replaces / Drop-In Replacement For
- Original PS Syracuse Electronics TSR/D-00300 units
- Equipment-specific 1-second delay relay requirements
- Verify compatibility with your system integrator before ordering.
Works With
- 8-pin DIN relay sockets
- Plug-in relay bases (OCM style)
- Standard relay logic circuits
- 115VAC control transformer wiring

