SKU: G3NA-450B-UTU-2 DC5-24V
Omron G3NA-450B-UTU-2 DC5-24V Solid State Relay 50A AC200-240V
Omron G3NA-450B-UTU-2 DC5-24V is a 50A solid state relay with DC5-24V control, AC200-240V load switching for high-current industrial heating applications.
USD 59.00 per unit, volume discounts available
- In stock, ships in 24h
- 100% genuine Omron
- 1-year manufacturer warranty
- Worldwide delivery
Key Features
- Load Current: 50A
- Load Voltage: AC200-240V
- Control Input: DC5-24V
- Switching Method: Zero-cross
- On-State Voltage Drop: 1.6V max
- Heat Sink: Required (Y92B-N150 or equivalent)
Robust Switching Interface for High-Uptime Control Panels
The G3NA-450B-UTU-2 DC5-24V provides a practical interface between controller outputs and field loads. In high-cycle or uptime-sensitive applications, this class of component supports cleaner switching behavior, reduced wear concerns, and easier panel-level standardization.
Controller-to-Load Interface Reliability
Relay/SSR devices isolate control electronics from field-side switching demands and provide a practical interface layer in mixed-load control systems.
High-Cycle Switching Practicality
For frequent switching duty, proper relay/SSR selection improves panel reliability and can reduce maintenance compared with under-rated or mismatched alternatives.
Panel Standardization Benefits
Using consistent relay/SSR classes across equipment simplifies wiring conventions, spare inventory, and technician troubleshooting workflows.
Typical Applications
- Isolates controller outputs from field loads
- Provides reliable switching for control branches
- Supports higher cycle operation with proper selection
- Improves panel maintainability and spare planning
- Reduces unplanned downtime from contact wear issues
- Enables cleaner wiring architecture in control cabinets
Buying Checklist
- Practical controller-to-load interface
- Supports high-duty panel switching
- Improves reliability with proper sizing
- Aids standardization of control wiring
- Strong lifecycle service value
Technical Specifications
| Model | G3NA-450B-UTU-2 DC5-24V |
|---|---|
| Series | G3NA |
| Load Current | 50A |
| Load Voltage | AC200-240V |
| Control Input | DC5-24V |
| Switching Method | Zero-cross |
| On-State Voltage Drop | 1.6V max |
| Heat Sink | Required (Y92B-N150 or equivalent) |
| Operating Temperature | -30 to +80°C |
| Mounting | Panel mount with heat sink |
Frequently Asked Questions
What size heat sink do I need for 50A?
Use Y92B-N150 heat sink for 50A continuous load. For loads above 40A or ambient above 40°C, consider forced air cooling. SSR power dissipation at 50A: 1.6V × 50A = 80W of heat that must be dissipated.
Can I use this for heater control in a furnace?
Yes, G3NA is commonly used for industrial heater control. For furnace applications: ensure adequate heat sinking, add varistor protection, consider zero-cross switching to reduce heater element stress, and implement thermal protection for the SSR itself.
What wire size for 50A load?
Use minimum 6 AWG (16mm²) copper wire for 50A. For runs over 3 meters or high ambient, use 4 AWG (25mm²). Follow local electrical codes and consider temperature rating of wire insulation.
Why choose 50A SSR over contactor?
SSR advantages: silent operation, no contact wear, high-cycle capability (for PWM temperature control), no arcing. Contactor advantages: lower cost, lower heat generation, simpler installation. Choose SSR for precision temperature control, contactor for simple on/off.
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