Overview
The Omron H3CR-A is a solid-state multifunctional timer relay designed for precision timing and process control in industrial automation. Rated for 5A contact current with AC100-240V (50/60 Hz) / DC100-125V power supply, this timer combines reliability with versatile operating modes. The compact DIN 48×48 mm form factor mounts directly on standard control rails, making it ideal for panel-mounted control systems.
Key Features
- Multiple Operating Modes: Time ranges from 0.05 seconds to 300 hours with selectable ON-delay, OFF-delay, flicker, and interval timing functions
- Solid-State Design: No moving parts ensures long mechanical life and reliability in harsh industrial environments
- Dual Voltage Supply: Single model operates on both AC and DC supplies—reduces inventory complexity
- Relay Output (DPDT): Double-pole, double-throw time-limit contact configuration provides flexible load switching
- Industrial-Grade Construction: Dielectric strength 2,000 VAC (50/60 Hz for 1 min), operating temperature -10°C to 55°C, mechanical life 20,000,000 operations minimum
- Standards Compliance: Conforms to EN61812-1 and IEC60664-1
Technical Specifications
11-pin solid-state timer with no-voltage input (NPN) and relay output (DPDT). DIN rail mount with plug-in terminal type and IP20/IP30 rating.
Typical Applications
- Machine cycle timing and sequencing
- Process delay control and dwell timing
- ON/OFF-delay functions in control panels
- Interval timing and one-shot pulse generation
- Motor soft-start and pump priming circuits
- Safety interlocks requiring precise time delays
Compatibility & Replacements
Compatible With
- Standard DIN rail mounting systems
- 24-48 VAC/12-48 VDC auxiliary supplies (via separate models)
- NPN no-voltage input sensors and switches
- 5A DPDT relay contact loads
- Industrial control panels and distribution boards
Replaces / Drop-In Replacement For
- Omron H3CR-A8S (similar functionality, lower inrush current variant)
- Verify model compatibility with your system integrator before ordering to ensure configuration and operating mode match your application requirements
Works With
- Omron PlantCyberSecurity and SCADA integration platforms
- Standard 24 VDC control circuits and PLC I/O modules
- Allen-Bradley CompactLogix and ControlLogix systems (via discrete 24 VDC control)
- Siemens S7 series PLCs using standard relay ladder logic
- Manual and semi-automatic industrial control circuits
