Description
Here’s a detailed Pros and Cons Q&A for the Omron G2RV-1-S DC21 Slim Relay — a plug-in style, slim-profile industrial relay designed for 21 V DC control voltage and compact panel installations.
✅ Pros
1. Slim Design (6.2 mm Width)
- Space-saving profile ideal for high-density control panels or compact enclosures.
- Helps reduce cabinet size and improve layout efficiency.
2. Plug-In Terminal Format
- Easy replacement and maintenance — relay can be swapped without rewiring.
- Compatible with screw or push-in terminal sockets.
3. Transparent Housing
- The relay’s clear body allows visual inspection of internal contacts and operation.
- Aids in diagnostics and manual verification.
4. Integrated LED Indicator
- Built-in coil status LED shows when the relay is energized — useful for troubleshooting and confirmation.
5. Wide Use in Industrial Automation
- Suitable for signal switching, PLC outputs, small actuators, and control logic.
- Often used in DIN rail-mounted relay banks.
6. DC21 Coil Voltage
- 21 V DC coil voltage is ideal for low-voltage DC logic circuits, including PLC or microcontroller outputs.
7. Good Electrical Isolation
- Provides reliable galvanic separation between control and load sides.
❌ Cons
1. Lower Power Handling
- Not designed for high-power switching — typically handles up to 6A depending on the load type.
- Not suitable for motors, heavy heaters, or high inrush devices.
2. Narrow Operating Voltage
- Coil is rated specifically for 21 V DC — little tolerance for voltage variation, so regulated supply is required.
3. Requires Socket for Use
- Cannot be directly PCB-mounted — must be used with a compatible G2RV socket, which adds to system cost and space.
4. Mechanical Contact Wear
- As an electromechanical relay, it is subject to contact wear over time, especially under frequent switching.
5. Limited Environmental Durability
- No built-in sealing or protection against dust/moisture — unsuitable for harsh environments without enclosure.
❓ Q&A
Q: What is the coil voltage of this relay?
A: It is rated for 21 V DC, which must be supplied by a stable DC power source.
Q: Can I mount this relay on a DIN rail?
A: Yes — when used with the appropriate DIN rail socket (e.g., P2RV series), it can be easily DIN rail mounted.
Q: Does the relay have any indication features?
A: Yes, it includes a built-in LED that lights up when the coil is energized.
Q: Can this relay switch AC loads?
A: Yes, but only low-power AC loads — be sure to check the contact ratings and use arc suppression if necessary.
Q: What are common applications?
A: Widely used in PLC output interfacing, signal relaying, light-duty load switching, and panel automation systems.
🧾 Summary
| Feature | Rating | Notes |
|---|---|---|
| Size & Space Efficiency | ★★★★★ | Extremely slim — excellent for dense installations |
| Ease of Replacement | ★★★★★ | Plug-in style with LED indicator |
| Load Capacity | ★★★☆☆ | Good for signals and light loads only |
| Coil Voltage Flexibility | ★★☆☆☆ | 21 V DC only — no AC or wide DC support |
| Mounting Versatility | ★★★★☆ | Requires compatible socket for DIN or panel mount |
| Diagnostics & Visibility | ★★★★★ | LED + transparent case aid troubleshooting |
The Omron G2RV-1-S DC21 is a compact, user-friendly signal relay perfect for tight-space control cabinets, automation panels, and PLC output interfacing. It offers easy diagnostics and clean wiring, but it’s best reserved for low-power, non-inductive loads.
Reviews
There are no reviews yet.