Overview
The Dayton 1EHC4A is a 5-pin plug-in general purpose relay featuring Single Pole Double Throw (SPDT) contact configuration. Rated for 15A at 120VAC, this relay is engineered for reliable control switching in industrial, commercial, and automation applications. The square base design accommodates standard relay sockets for straightforward installation. This lot includes 6 units, ensuring stock for replacement, maintenance, and system redundancy.
Key Features
- Single Pole Double Throw (SPDT) contact form for flexible switching logic
- 15A contact rating at 120VAC; 15A @ 28VDC support for multi-voltage flexibility
- 5-pin plug-in configuration for quick socket-based installation
- Square base design compatible with standard relay socket mounts
- Mechanical flag status indicator for visual coil energization confirmation
- Silver alloy contacts for dependable electrical conductivity and durability
- 1/2 HP @ 120VAC and 1 HP @ 240VAC motor load capacity
- Clear protective cover to prevent accidental contact and debris ingress
Technical Specifications
| Contact Form | SPDT (Single Pole Double Throw) |
| Coil Voltage | 120V AC |
| Contact Rating (AC) | 15A @ 120V; 15A @ 277V |
| Contact Rating (DC) | 15A @ 28V |
| Number of Pins | 5 |
| Base Shape | Square plug-in |
| Mounting Style | Socket-mount (plug-in) |
| Body Dimensions | 0.53″ W × 1.4″ H × 1.1″ D |
| Contact Material | Silver alloy |
| Status Indicator | Mechanical flag |
| Horsepower Rating @ 120V AC | 1/2 hp |
| Horsepower Rating @ 240V AC | 1 hp |
| Package Quantity | 6 relays |
Typical Applications
- PLC input/output module control and signal switching
- Compressor and motor starter auxiliary control circuits
- Process control switching and interlock logic
- Alarm and indicator lamp circuits in industrial panels
- HVAC equipment control and safety interlocks
- Machine automation and sequencing circuits
- Backup relay stocking for maintenance and system redundancy
Compatibility & Replacements
Compatible With
- Standard relay sockets with 5-pin square base configuration
- Industrial control panels and 24/120VAC control circuits
- Pneumatic and hydraulic control systems with electrical switching
- Motor starters, contactors, and overload relay circuits
- General-purpose automation and logic control systems
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. Common interchangeable relays in this class include models from manufacturers like Omron, Schneider, and GE; however, socket configuration and pin assignment must match exactly before substitution.
Works With
- Dayton relay sockets and bases (5-pin square mount)
- Traditional hardwired panel control logic
- 120VAC control voltage standard industrial systems
- No software integration required (passive electromechanical switch)
